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Improving the estimation of soil water evaporation based on days after wetting J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-06-21 Élvis da Silva Alves, Lineu Neiva Rodrigues, Fernanda Laurinda Valadares Ferreira
Soil evaporation constitutes a major pathway of water loss in agriculture. Understanding its dynamics in the face of drying and soil cover is fundamental to improve both simulation models and the sustainability of production systems. Thus, the objective of this study was to estimate soil evaporation as a function of drying and percentage of soil cover. Three experiments were carried out in three different
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Photosynthetic activity and water use efficiency of Salvia verbenaca L. under elevated CO2 and water-deficit conditions J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-06-17 Muhammad Mansoor Javaid, Singarayer K. Florentine, Muhammad Ashraf, Athar Mahmood, Abdul Sattar, Allah Wasaya, Feng-Min Li
Investigating the combined effects of elevated CO2 concentration and water-deficit on weed plants is crucial to gaining a thorough understanding of plant performance and modifying agricultural processes under changing climate conditions. This study examined the effect of elevated CO2 concentration and water-deficit conditions on leaf gas exchange, water use efficiency, carboxylation efficiency and
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CO2 elevation and nutrient patchiness interactively affect morphology, nitrogen uptake, partitioning and use efficiency of Nicotiana tabacum L. (tobacco) during anthesis J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-06-16 Lin Zhang, Guitong Li, Caibin Li, Fulai Liu
The stimulation effect of elevated [CO2] (e[CO2]) on plant growth is modulated by nitrogen (N) availability, yet the mechanisms of this modulation under patchy N supply remain largely elusive. This study aimed to investigate the mechanisms by which patchy nutrient supply in the root-zone influence on N uptake, partitioning and use efficiency of tobacco plants (Nicotiana tabacum L.) grown under e[CO2]
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Effects of nitrogen and water stress on the rehydration, endogenous hormonal regulation and yield of maize J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-06-16 Yuxin Chi, Shakeel Ahmad, Kejun Yang, Jian Fu, Li Yang, Xun Bo Zhou, Hongde Zhu
Water scarcity is known to be a strong limiting factor affecting maize grown and yield in cold semi-arid regions. Numerous studies have shown that rehydration improves maize growth. Our study aimed to explore the effects of rehydration treatments on maize growth and yield under water and nitrogen stress during different growth stages. We selected the drought-tolerant maize variety Nendan 19 (ND19)
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Rain events at maturity severely impact the seed quality of psyllium (Plantago ovata Forssk.) J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-05-23 James M. Cowley, David L. McNeil, King Yin Lui, Jacqueline P. Barsby, Silvano Ciani, Virna Cerne, Rachel A. Burton
Plantago ovata Forssk. is an emerging crop yielding psyllium husk, a material comprised of hydrophilic polysaccharides that form mucilage upon wetting. Psyllium husk has important industrial uses including as a dietary fibre supplement and a textural alternative in gluten-free bread production. Industrial applications require high-quality and purity psyllium husk, but consistent supply of uniform quality
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Photosynthesis and salt cations adsorption response of spring maize (Zea mays L.) to salinity stress caused by different drip irrigation regimes in an arid saline area, Northwest China J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-05-20 Yu Cheng, Tibin Zhang, Ruonan Qiao, Sihui Yan, Min Luo, Chun Wang, Tonggang Zhang, Qin'ge Dong, Hao Feng
Salinity is one of the most decisive environmental factors limiting crop productivity, especially in arid and semi-arid regions. The objective of this study was to evaluate the growth depression of spring maize (Zea mays L.) due to salinity stress caused by different drip irrigation regimes in an arid saline area. A two-year field experiment was conducted in the Hetao Irrigation District, northwest
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Physiological and biochemical adaptive traits support the specific breeding of alfalfa (Medicago sativa) for severely drought-stressed or moisture-favourable environments J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-05-16 Yun Kang, Amaia Seminario, Michael Udvardi, Paolo Annicchiarico
The adaptation of alfalfa to moisture-favourable and drought-prone environments and its underlying mechanisms have not been thoroughly investigated despite its crucial importance to maximize the crop breeding progress. The main aim of this study was to support breeding strategies by exploring the relationship of leaf morphophysiological traits assessed in three growth chamber experiments with the adaptive
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Gypsum amendment influences performance and mineral absorption in wheat cultivars grown in normal and saline-sodic soils J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-05-13 Sabah Morsy, Ibrahim S. Elbasyoni, Stephen Baenziger, Ahmed M. Abdallah
In arid and semi-arid regions, soil salinity and sodicity are the most common constraints to agriculture production, in particular in North Africa. The effect of gypsum application has been widely studied in saline-sodic soils. However, the gypsum amendment's influence on the performance, productivity and mineral absorption of salt-sensitive and tolerant wheat cultivars in both saline-sodic and normal
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Functional contribution of two perennial grasses to enhance pasture production and drought resistance under a leaf regrowth stage defoliation criterion J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-05-13 Javier García-Favre, Ignacio F. López, Lydia M. Cranston, Daniel J. Donaghy, Peter D. Kemp, Iván P. Ordóñez
Lolium perenne L. (Lp) is the main pasture species in New Zealand, but climate change increases the likelihood of drought during summer and consequently lowers its growth rates. Bromus valdivianus Phil. (Bv) tolerates better the summer soil water restriction, but its competitiveness in a diverse pasture relates to the defoliation management and soil moisture levels. The performance of both species
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Potassium content is the main driver for salinity tolerance in sweet potato before tuber formation J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-05-08 Shimul Mondal, Ebna Habib Md Shofiur Rahaman, Folkard Asch
Sweet potato (Ipomoea batatas L.) is mostly grown in Asia, which accounts for 86% of global production. However, its production is under threat by salinity. Little is known about genotypic responses to salinity in sweet potato. Phenotypic responses or physiological processes linked to salt tolerance that could be developed into a reliable screening tool to assist breeding have not yet been developed
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Endogenous hormones improve the salt tolerance of maize (Zea mays L.) by inducing root architecture and ion balance optimizations J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-05-03 Dan-dan Hu, Shuting Dong, Jiwang Zhang, Bin Zhao, Baizhao Ren, Peng Liu
The growth and development of maize is affected in a crucial way by the salinity of the soil it grows in. Therefore, if we want to improve the salt tolerance of maize, it is of paramount importance to understand how it responds to salt stress. To explore how maize adapts to a saline environment, we chose one salt-tolerant maize variety, Jingnongyu 658 (JNY658), and one salt-sensitive variety, Yunyu7
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Deficit irrigation maintains maize yield through improved soil water extraction and stable canopy radiation interception J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-04-30 Jin Zhao, Qingwu Xue, Kirk E. Jessup, Thomas H. Marek, Wenwei Xu, Jourdan Bell
Deficit irrigation (DI) is an effective way to save irrigation water while maintaining sustainable yield in irrigated crops. However, limited information is available related to canopy structure and solar radiation use under DI condition. In this study, our objective was to assess maize hybrids for leaf development, photosynthetically active radiation (PAR) interception and water use under DI condition
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Impacts of chilling at the tillering phases on rice growth and grain yield in Northeast China J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-04-27 Erjing Guo, Lizhi Wang, Shukun Jiang, Hongtao Xiang, Yanying Shi, Xi Chen, Xue Cheng, Xiaoyu Wang, Tianyi Zhang, Lianmin Wang, Yanjiang Feng, Yongcai Lai, Tao Li, Xiaoguang Yang
Chilling is a major constraint on rice production in mountainous regions of the tropics and in the temperate rice-growing zones of the world. In this study, our goal is to quantify the impacts of chilling at the tillering phases on rice growth and grain yield. In 2017 and 2018, we conducted a factorial chilling treatment at four temperatures (T1, T2, T3 and T4) and four duration days (D2, D4, D6 and
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Soil drought duration and severity affect cotton boll biomass by altering recovery times and carbon dynamics of subtending leaf J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-04-21 Jie Zou, John L. Snider, Honghai Zhu, Jiaqi He, Yuxia Li, Zhiguo Zhou, Youhua Wang, Yali Meng, Binglin Chen, Wenqing Zhao, Shanshan Wang, Wei Hu
Drought appears at flowering and boll formation for cotton frequently. However, reports on the impact of carbon dynamics in the subtending leaf on boll biomass under periodic droughts are limited. To investigate this, experiments were carried out with two cultivars (drought-tolerant: Dexiamian 1; drought-sensitive: Yuzaomian 9110), three water levels [soil relative water content (SRWC): control (75 ± 5)%
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Effect of water deficit on morphoagronomic traits of black common bean genotypes (Phaseolus vulgaris L.) with contrasting drought tolerance J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-04-21 Sebastião Soares de Oliveira Neto, Francisca Franciana Sousa Pereira, Tiago Zoz, Carlos Eduardo da Silva Oliveira, Vânia Moda Cirino
Brazil is the world's largest producer of common beans (Phaseolus vulgaris L.). Drought stress harms the morphological and agronomic traits of beans. This study evaluates the reaction to water deficit in five genotypes of black beans. The experiment was conducted in the IDR-IAPAR-EMATER in Londrina-PR, Brazil. A split-plot design was used, with three replications. The genotypes were included in the
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Phenotypic assessment of genetic gain from selection for improved drought tolerance in semi-tropical maize populations J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-04-19 Tatenda R. Musimwa, Terence L. Molnar, Somak Dutta, Thanda Dhliwayo, Samuel Trachsel, Michael Lee
Most maize production across the globe is rain-fed, and production is set to be negatively impacted as duration and occurrence of droughts increases due to climate change. Development of water-deficit tolerant maize germplasm has been a major focus for most breeding programmes. Here, we sought to assess the genetic gain for grain yield in two maize populations developed for drought tolerance at CIMMYT
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Dissecting heat tolerance and yield stability in maize from greenhouse and field experiments J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-03-21 Mayang Liu, Dechang Sheng, Xiaoli Liu, Yuanyuan Wang, Xinfang Hou, Yuqi Wang, Pu Wang, Ling Guan, Xin Dong, Shoubing Huang
High temperature during flowering increasingly reduces maize yield with warming climate. Heat tolerance of maize is however not fully understood in the aspect of flowering characteristics and yield stability, especially in the female flowering patterns. Temperature-controlled greenhouse studies were conducted to test heat tolerances of four inbred lines and five hybrids, including 30/20 and 40/30°C
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Root system growth and anatomy of cotton seedlings under suboptimal temperature J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-03-17 John L. Snider, Nuengsap Thangthong, Chiara Rossi, Cristiane Pilon
Root morphology and anatomy are important plant traits that could potentially influence seedling vigour, resource acquisition and susceptibility to early-season stress. Therefore, the objective of the current experiment was to evaluate the effects of cultivar and growth temperature on seedling root growth and anatomical characteristics in cotton. To address this objective, experiments were conducted
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High night temperature during maize post-flowering increases night respiration and reduces photosynthesis, growth and kernel number J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-03-15 Belén Araceli Kettler, Constanza Soledad Carrera, Federico David Nalli Sonzogni, Samuel Trachsel, Fernando Héctor Andrade, Nicolás Neiff
In the last years globally, daily night-time low temperatures have increased more than twice compared with maximum temperatures. There is little evidence about maize growth and yield responses to high night temperature (HNT) under field conditions. In this study, we aimed to (i) evaluate the effect of HNT during post-flowering on kernel number (KN), crop growth rate expressed in chronological days
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Consequences of changing spatial configuration at sowing in the transitions between crop and pasture phases J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-03-12 Richard C. Hayes, Matthew T. Newell, Anthony D. Swan, Mark B. Peoples, Keith G. Pembleton, Guangdi D. Li
Prospects for improving the productivity of species mixtures in transitions between phases by changing row configuration at sowing were examined in two series of field experiments in rain-fed, semi-arid environments in south-eastern Australia. The first series explored how the choice of cover crop and use of alternate drill row configurations affected establishment and yields of sward components in
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Exogenous calcium application enhances salt tolerance of sweet sorghum seedlings J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-03-10 Wenjing Yang, Yinping Gao, Xuemei Wang, Simin Li, Hongxiang Zheng, Zengting Chen, Fenghui Wu, Xihua Du, Na Sui
The intensification of global soil salinization has seriously decreased crop yield. At the same time, the rapid increase in population has raised the demand for crop yields. Reasonable use of saline-alkali land and cultivation of salt-tolerant crops through transgenic technology becomes more important. Sweet sorghum [Sorghum bicolor (L.)], as an important energy crop, resists abiotic stress effectively
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Multidimensional screening and evaluation of morpho‐physiological indices for salinity stress tolerance in wheat J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-03-01 Md Quamruzzaman, S. M. Nuruzzaman Manik, Mark Livermore, Peter Johnson, Meixue Zhou, Sergey Shabala
Soil salinity is one of the major constraints to crop production worldwide. The multifaceted nature of salinity tolerance traits complicates plant screening and the identification of salt-tolerant germplasm to be used for the genetic advancement of corps. Many screening criteria have been suggested to distinguish between genotypes. Most of these were applied under controlled environmental conditions
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Temporal transcriptomes unravel the effects of heat stress on seed germination during wheat grain filling J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-02-24 Yu He, Wen Huang, Zhien Pu, Maolian Li, Mengping Cheng, Yujiao Liu, Huixue Dong, Pengfei Qi, Xiaojiang Guo, Qiantao Jiang, Yuming Wei, Jirui Wang
Promoting seed germination after short episodes of heat stress during the wheat grain filling stage is a serious problem that results in pre-harvest sprouting. The plant hormones abscisic acid (ABA), gibberellins (GAs), and ethylene (ETH) are well known to be involved in germination control. However, the genes associated with the metabolism and responsiveness of these hormones to heat stress during
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Physiological traits for evaluating heat-tolerance of Australian spring wheat cultivars at elevated CO2 J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-02-14 Anowarul I. Bokshi, Rebecca J. Thistlethwaite, Edward D. Chaplin, Erasmus Kirii, Richard M. Trethowan, Daniel K. Y. Tan
High temperatures and increasing CO2 concentrations are a major threat to global wheat (Triticum aestivum L.) production, demanding the development of heat-tolerant wheat cultivars. Plant physiological traits are potential surrogates for evaluating genetic variation for crop stress tolerance. This research evaluated 23 Australian wheat cultivars and two breeding lines for heat-tolerance by characterising
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Thermal imaging for assessment of maize water stress and yield prediction under drought conditions J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-02-07 Chukiat Pradawet, Nuttapon Khongdee, Wanwisa Pansak, Wolfram Spreer, Thomas Hilger, Georg Cadisch
Maize production in Thailand is increasingly suffering from drought periods along the cropping season. This creates the need for rapid and accurate methods to detect crop water stress to prevent yield loss. The study was, therefore, conducted to improve the efficacy of thermal imaging for assessing maize water stress and yield prediction. The experiment was carried out under controlled and field conditions
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Modulation of photosynthesis under salinity and the role of mineral nutrients in Jatropha curcas L. J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-02-07 Egídio Bezerra-Neto, José Benjamin Machado Coelho, Alfredo Jarma-Orozco, Luis Alfonso Rodríguez-Páez, Marcelo F. Pompelli
Jatropha curcas is a common species in Brazil, potentially being an option to produce oil for bioenergetic purposes. Around the world, J. curcas has been cultivated in areas of low fertility, in the presence of salts, and with the use of brackish groundwater. Salt stress can hinder the absorption of nutrients and allow entry of ions in toxic concentrations, affecting the development and productivity
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Interactive effect of elevated [CO2] and temperature on the photosynthetic process, anti-oxidative properties, and grain yield of rice J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-02-01 Sharad K. Dwivedi, Santosh Kumar, Janki S. Mishra, Ved Prakash, Karnena K. Rao, Bhagwati P. Bhatt, Ashish K. Srivastava
The simultaneous increase of carbon dioxide and temperature causes significant changes in rice physiology and production, but limited studies have been performed in the past to examine the interactive effect of these two key variables on lipid peroxidation, anti-oxidative properties, gas exchange parameters, and grain yield of rice. Thus, an experiment was conducted by growing two rice genotypes (IR83376-B-B-24–2
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Genetic variation among the salinity tolerant breeding lines identified from two multi-parent advanced generation introgression line populations in rice (Oryza sativa) J. Agron. Crop Sci. (IF 3.473) Pub Date : 2022-02-01 Sandeep Chapagain, Jonathan Concepcion, Rajat Pruthi, Lovepreet Singh, Adam Famoso, Prasant K. Subudhi
Salinity is a major environmental constraint affecting rice production in both irrigated and non-irrigated areas and threatening global food security. Development of salt-tolerant rice varieties with desirable agronomic traits is a logical approach to maintain high yield in saline areas. Here, we report development of two multi-parent advanced generation introgression line (MAGIL) rice populations
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Impacts of saline stress on the physiology of Saccharum complex genotypes J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-12-13 Welson Lima Simões, Anderson Ramos de Oliveira, Flávio Dessaune Tardin, Cíntia Patrícia Martins de Oliveira, Lizz Kezzy de Morais, Larissa Pereira Ribeiro Teodoro, Paulo Eduardo Teodoro
Knowledge of the physiological mechanisms in saline environment may boost sugarcane breeding programmes targeting abiotic stresses. Our hypothesis is that the physiology of Saccharum genotypes responds differently under salt stress. Thus, the objective of the study was to evaluate the physiological performance of Saccharum complex genotypes grown under presence and absence of saline stress. The experimental
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Contribution of climate models and APSIM phenological parameters to uncertainties in spring wheat simulations: Application of SUFI-2 algorithm in northeast Australia J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-12-05 Brian Collins, Ullah Najeeb, Qunying Luo, Daniel K. Y. Tan
We used SUFI-2 for the first time to calibrate the phenology module of the APSIM-wheat model for 10 spring wheat cultivars cultivated in northeast Australia (south-eastern Queensland). Calibration resulted in an average root mean square error (RMSE) of 5.5 days for developmental stages from stem elongation up to flowering. Projections from 33 climate models under the representative concentration pathway
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Distinct contributions of drought avoidance and drought tolerance to yield improvement in dryland wheat cropping J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-12-01 Pu-Fang Li, Bao-Luo Ma, Jairo A. Palta, Tong-Tong Ding, Zheng-Guo Cheng, You-Cai Xiong
Crop avoidance and tolerance strategies are critical adaptive mechanisms of drought stress and play different roles in grain yield. However, little is known about the contribution of these two mechanisms to grain yield in old and modern wheat genotypes. Here, pot and field experiments were carried out to characterize and compare the mechanisms of drought avoidance and drought tolerance, and determine
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Nitrogen supplement attenuates drought stress for non-leguminous hybrid plant fescue and does not affect nitrogen-fixing alfalfa J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-27 Irena Januškaitienė, Giedrė Kacienė, Austra Dikšaitytė, Jūratė Žaltauskaitė, Diana Miškelytė, Gintarė Sujetovienė, Romualdas Juknys
This work focuses on the investigation of forage crops hybrid fescue and legume alfalfa response to drought at different levels of nitrogen fertilization. Plants were grown in pots filled with a mixture of field soil, perlite and fine sand with three (N0, N60 and N90 kg/ha) levels of nitrogen fertilization in a greenhouse. Drought stress was applied by withholding watering for 1 week, after which plants
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Metabolic and film antitranspirants both reduce drought damage to wheat yield despite having contrasting effects on leaf ABA J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-17 Wiza Mphande, Aidan D. Farrell, Ivan G. Grove, Laura H. Vickers, Peter S. Kettlewell
Film antitranspirants (e.g. di-1-p-menthene) and metabolic antitranspirants (e.g. exogenous ABA) can be used to protect grain crops from drought, particularly during reproductive development. Here, we compared effects of di-1-p-menthene (1.0 L/ha) and exogenous ABA (100 µM) on well-watered and droughted spring wheat in two glasshouse experiments. Progressive drought was imposed in the first experiment
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Drought stress in sorghum: Mitigation strategies, breeding methods and technologies—A review J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-15 Muhammad Ahmad Yahaya, Hussein Shimelis
Agriculture accounts for 70% of the global use of available freshwater. Projections show that demand for water will increase significantly due to climate change, population growth and development of agricultural enterprises globally. There is a need to develop water-use efficient crop cultivars for sustainable agricultural production. Sorghum [Sorghum bicolor (L.) Moench.] is a powerhouse crop in drier
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Heat stress effects on the reproductive physiology and yield of wheat J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-10 Aman Ullah, Faisal Nadeem, Ahmad Nawaz, Kadambot H. M. Siddique, Muhammad Farooq
Climate change is adversely affecting wheat yields as the associated rising temperatures damage its reproductive physiology. Heat stress affects wheat at various stages of growth, but flowering and reproductive phases are the most sensitive to high temperatures as flower opening usually occurs in cooler environments. Heat stress at meiosis causes ovule and pollen sterility along with anther dehiscence
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A new methodological approach for simulating water deficit in soybean genotypes J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-09-02 Heloisa Rocha do Nascimento, Lorena de Oliveira Moura, Anunciene Barbosa Duarte, Stênio Andrey Guedes Dantas, Dalton de Oliveira Ferreira, Lucas Barbosa de Castro Rosmaninho, Isabella Cristina Cavallin, Fernando França da Cunha, Felipe Lopes da Silva
Methodologies for imposing stress and reproducible results are a bottleneck for breeding programmes, and this is due to the lack of consensus between the existing methodologies. The aim of the present study was to propose and validate a new methodology for imposing water deficit in soybean that allows the identification of water deficit-tolerant genotypes, at different harvest times and phenological
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A novel raffinose biological pathway is observed by symbionts of cotton≡Verticillium dahliae to improve salt tolerance genetically on cotton J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-11 Ruifeng Cui, Xuke Lu, Xiugui Chen, Waqar Afzal Malik, Delong Wang, Junjuan Wang, Shuai Wang, Lixue Guo, Chao Chen, Xiaoge Wang, Xinlei Wang, Maohua Dai, Wuwei Ye
Verticillium dahliae is a soil-borne, phytopathogenic fungus that causes Verticillium wilt in cotton. Salt tolerance of cotton plants suffering from Verticillium wilt was significantly improved, but the mechanism is unknown. In this study, we built a symbiont named Cotton≡VD by immersing cotton plant roots into Verticillium dahliae liquid for four days. This resulted in a strong interaction between
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The effect of auxins on amelioration of heat stress-induced wheat (Triticum aestivum L.) grain loss J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-15 Dhanuja N. Abeysingha, Jocelyn A. Ozga, Sheri Strydhorst, Patrick Doyle, Muhammad Iqbal, Rong-Cai Yang, Dennis M. Reinecke
High temperature stress during the reproductive growth stage of wheat (Triticum aestivum L.) can cause extensive yield losses. As the plant hormone auxin is a key regulator of reproductive development, we studied the effect of auxins on grain yield in five wheat lines exposed to moderate heat stress (34–35°C) for 6 h per day for 6 days during early flowering (booting stage to anthesis). ‘CDC Go’, a
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Multiple-generation seed maturity effects on seedling vigour in a production environment J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-11 Yangyang Song, Yu-Chien Tseng, Diane L. Rowland, Barry L. Tillman, Chris H. Wilson, Paul J. Sarnoski, Brendan A. Zurweller
Maturity is not only critical for vigour and other seed quality characteristics but also impacts the subsequent plant performance. If these impacts on the subsequent plant are long lasting, the potential to produce vigorous, mature seed may also be affected. This scenario lends itself to the concept of seed maturity memory (SMM) – an understanding of how seed maturity may impact subsequent generations
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Intercropping with Guiera senegalensis in a semi-arid area to mitigate early-season abiotic stress in A. hypogea and P. glaucum J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-02 Roger Bayala, Ibrahima Diedhiou, Nathaniel A. Bogie, Matthew B. H. Bright, Yacine Ndour Badiane, Teamrat A. Ghezzehei, Richard P. Dick
Recent research has shown that the native shrub, Guiera senegalensis J.F. Gmel, interplanted with crops dramatically increases crop yield in the Sahel. However, little is known about the crop development when grown alongside shrubs. The objectives were to determine the effect of shrub presence on crop development under varying fertilizer rates in northern Senegal. Peanut (Arachis hypogaea L.) and pearl
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Evaluation of recurrent selection for drought tolerant tall fescue (Festuca arundinacea) using rain-out shelters J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-02 Yuanshuo Qu, Edwin J. Green, Stacy A. Bonos, William A. Meyer
Rain-out shelters provide an effective tool to establish controlled water-stress environments by excluding undesired rain events and have been widely used in the selection and breeding of cool-season turfgrass for improved drought tolerance. However, the efficiency of recurrent selection using rain-out shelters has seldomly been investigated. In this study, we documented the selection process of tall
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Source‐sink limitations for grain weight in wheat and barley under waterlogging conditions during pre‐anthesis J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-02 D. E. Becheran, D. J. Miralles, L. G. Abeledo, S. Alvarez Prado, R. P. de San Celedonio
In wheat and barley, grain yield is strongly affected by waterlogging, especially during the period immediately previous to anthesis. Although waterlogging reduces grain yield mainly by reductions in grain number, mean grain weight (MGW) is also frequently reduced. The aim of this work was to determine whether increases in the source-sink ratio produces smaller reductions in MGW due to waterlogging
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Water use efficiency of sugar beet genotypes: A relationship between growth rates and water consumption J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-11-02 Henning Ebmeyer, Christa M. Hoffmann
Drought stress restricts sugar beet growth and yield formation. For the development of adapted varieties, reasons for high water demand in certain growth periods and for genotypic differences in water use efficiency (WUE) were investigated. In 2019 and 2020, different drought stress periods were simulated in pot trials in the greenhouse with four sugar beet genotypes by reducing the water supply to
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Differences in the light‐dependent changes of the glutathione metabolism during cold acclimation in wheat varieties with different freezing tolerance J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-30 Muhammad Ahsan Asghar, Eszter Balogh, Gabriella Szalai, Gábor Galiba, Gábor Kocsy
Light-dependent (250 or 500 µmol/m2/s, red/far-red: 15/1; 250 µmol/m2/s and red/far-red: 10/1) adjustment of glutathione metabolism during cold acclimation (5°C, 7 d) was compared in four wheat genotypes (14-day-old) differing in freezing tolerance. Only the shoot fresh weight of the two tolerant genotypes increased during cold, regardless of light conditions. Their electrolyte leakage was decreased
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Phenotyping of productivity and resilience in sweetpotato under water stress through UAV-based multispectral and thermal imagery in Mozambique J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-25 David A. Ramírez, Wolfgang Grüneberg, Maria I. Andrade, Bert De Boeck, Hildo Loayza, Godwill S. Makunde, Johan Ninanya, Javier Rinza, Simon Heck, Hugo Campos
Sweetpotato is a crucial crop to guarantee food security in sub-Saharan Africa, and drought events are considered one of the most critical factors affecting sweetpotato productivity in this region. In this study, airborne imagery based on reflectance (NDVI, CIred-edge) and canopy temperature minus air temperature (dT) indices was used to characterize sweetpotato genotypes under drought treatments in
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Salinity tolerance of lentil is achieved by enhanced proline accumulation, lower level of sodium uptake and modulation of photosynthetic traits J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-20 Maria R. Panuccio, Federico Romeo, Federica Marra, Carmelo Mallamaci, Muhammad Iftikhar Hussain, Adele Muscolo
Lentil (Lens culinaris, Medik.), an accessible low-cost high-quality protein form for many people, is a salt-sensitive legume, which already at an electrical conductivity (EC) of 3 dS/m (~30 mM NaCl) has a yield loss of about 90% compared to other crops. Identifying salinity-tolerant lentil germplasm is nowadays of primary importance for ensuring the production of superfood and the sustainability of
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Soil water depletion of peanut subspecies as influenced by water-use traits and soil water availability J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-19 Brendan A. Zurweller, Diane L. Rowland, Barry L. Tillman, Paxton Payton, J. Erickson, Kelly Racette, Ethan Carter
While improved crop water-deficit tolerance is considered of primary importance, many phenotyping efforts focusing on quantifying structural root traits make assumptions about architecture representing root function. Therefore, the aim of this study was to quantify whole plant water-use traits among disparate peanut (Arachis hypogaea L.) genotypes and determine their impact on water-deficit tolerance
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Shading under drought stress during grain filling attenuates photosynthesis, grain yield and quality of winter wheat in the Loess Plateau of China J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-19 Muhammad Asad Naseer, Sadam Hussain, Zhang Nengyan, Irsa Ejaz, Shakeel Ahmad, Muhammad Farooq, Ren Xiaolong
In the Loess Plateau region of China, winter wheat often undergoes prolonged cloudy days without rain which may affect the grain yield and quality. This study examined the impacts of shading and drought conditions during the grain-filling period of winter wheat (Triticum aestivum L.) on photosynthesis, grain yield and quality traits in a greenhouse experiment. The imposed shading and irrigation-deficit
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The variation of relative water content, SPAD chlorophyll meter reading, stomatal conductance, leaf area, and specific leaf area of Jerusalem artichoke genotypes under different durations of terminal drought in tropical region J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-19 Aunchana Chaimala, Sanun Jogloy, Nimitr Vorasoot, Corley C. Holbrook, Craig K. Kvien, Suwit Laohasiriwong
This work assessed the responses of Jerusalem artichoke (JA) genotypes experienced to different durations of terminal drought for relative water content (RWC), SPAD chlorophyll meter reading (SCMR), stomatal conductance (SC), leaf area (LA) and specific leaf area (SLA), investigated the significant contributor of physiological traits to yield and yield reduction and diversity of physiological traits
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Soybean base saturation stress: Selecting populations for multiple traits using multivariate statistics J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-19 Ariane de Andrea Pantaleão, Larissa Pereira Ribeiro Teodoro, Leandris Argentel Martínez, Jorge Gonzáles Aguilera, Cid Naudi Silva Campos, Fábio Henrique Rojo Baio, Carlos Antonio da Silva Júnior, Paulo Eduardo Teodoro
One of the main objectives of soybean breeding programs is the search for genotypes that are both high yielding and tolerant to abiotic stresses. Brazilian Cerrado, the main grain-producing region in the country, is characterised by naturally acidic and low fertility soils that consequently have low base saturation. Therefore, identifying genotypes with good performance for favourable and low base
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Rice–weed competition in response to nitrogen form under high and low transpirational demand J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-19 Duy Hoang Vu, Sabine Stuerz, Folkard Asch
Implementation of water-saving irrigation practices in lowland rice results in increased availability of nitrate (NO3−) in the soil and favours germination of upland weeds. Since plant species show a specific preference for either ammonium (NH4+) or NO3− as nitrogen (N) source, changes in both soil NO3− concentration and weed flora may affect the competition between rice and weeds. Further, the transpirational
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Nitrogen requirements for deficit-irrigated bermudagrass (Cynodon spp.) fairways in South Florida J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-11 Marco Schiavon, Travis W. Shaddox, Karen E. Williams, Sergio Gallo, P. Agustin Boeri, J. Bryan Unruh, Jason Kruse, Kevin Kenworthy
Several new bermudagrass cultivars are available and commonly used on golf course fairways. However, little is known about their cultural requirements or how these cultivars perform under lower inputs regimes. A 2-year study was conducted at University of Florida, Fort Lauderdale Research and Education Center, to assess performance of four hybrid bermudagrass [Cynodon dactylon L. Pers. X Cynodon transvaalensis
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Cold stress-induced miRNA and degradome changes in four soybean varieties differing in chilling resistance J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-10-11 Jakub Kuczyński, Joanna Gracz-Bernaciak, Tomasz Twardowski, Wojciech M. Karłowski, Agata Tyczewska
Chilling stress is one of the most important factors limiting soybean yield in the temperate climate. It significantly constraints the spatial distribution and agricultural productivity of plants, thereby affecting their growth and development. In this study, to determine the involvement of microRNAs (miRNAs) and their target genes in the chilling resistance of four soybean cultivars (Augusta, Fiskeby
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Competition, stress and benefits: Trees and crops in the transition zone of a temperate short rotation alley cropping agroforestry system J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-09-07 Anita Swieter, Maren Langhof, Justine Lamerre
Tree strips on agricultural production sites offer many economic, ecological and social advantages. However, the introduction of trees creates a transition zone between tree strips and crop land. Here, trees and crop plants compete for resources such as space, nutrients, water and light, which causes stress in the low-competitive system. On the other hand, facilitation such as additional nutrient input
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Can intercropping be an adaptation to drought? A model-based analysis for pearl millet–cowpea J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-09-05 William C. D. Nelson, Munir P. Hoffmann, Vincent Vadez, Reimund P. Rötter, Marian Koch, Anthony M. Whitbread
Cereal–legume intercropping is promoted within semi-arid regions as an adaptation strategy to water scarcity and drought for low-input systems. Our objectives were firstly to evaluate the crop model APSIM for pearl millet (Pennisetum glaucum (L.))—cowpea (Vigna unguiculata (L.) Walp) intercropping—and secondly to investigate the hypothesis that intercropping provides complimentary yield under drought
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Effects of high temperature during anthesis and grain filling on physiological characteristics of winter wheat cultivars J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-08-12 Milan Mirosavljević, Sanja Mikić, Vesna Župunski, Ankica Kondić Špika, Dragana Trkulja, Carl-Otto Ottosen, Rong Zhou, Lamis Abdelhakim
Due to climate change, multiple heat events are expected to be an additional limiting factor that will adversely affect wheat production. The study aimed to analyze the physiological response to heat stress in four winter wheat cultivars at different physiological stages under greenhouse conditions during 2019. The net photosynthetic rate, stomatal conductance, chlorophyll index, maximum quantum efficiency
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Low-temperature stress during the flowering period alters the source–sink relationship and grain quality in field-grown late-season rice J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-08-13 Min Huang, Jialin Cao, Yu Liu, Mingyu Zhang, Liqin Hu, Zhengwu Xiao, Jiana Chen, Fangbo Cao
Late-season rice, a major contributor to the production of high-quality rice in China, often experiences low temperatures during the flowering period. The objective of this study was to determine the effect of low temperature stress on grain quality and to identify related physiological factors in late-season rice. Sink and source characteristics and grain quality traits of two high-quality late-season
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The physiological and proteomic characteristics of oilseed rape stem affect seed yield and lodging resistance under different planting densities and row spacing J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-08-12 Jie Kuai, Xiaoyong Li, Jianli Ji, Zhen Li, Yan Xie, Bo Wang, Guangsheng Zhou
Lodging is an important factor that restricts the yield of rapeseed and the mechanical harvesting. To explore agricultural practise and mechanisms that can synergistically improve the rapeseed yield and lodging resistance, a conventional plant type HZ 62 was selected in 2016–2017, and HZ 62 and an erect-leaf type 1,301 were grown in 2017–2018. The planting density was set as main plots at 15 × 104
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A manifold response of forage rape to combined heat wave and drought under current and elevated CO2 J. Agron. Crop Sci. (IF 3.473) Pub Date : 2021-08-01 Giedrė Kacienė, Diana Miškelytė, Austra Dikšaitytė, Irena Januškaitienė, Gintarė Sujetovienė, Jūratė Žaltauskaitė, Marius Praspaliauskas, Romualdas Juknys
Intensity and frequency of heat waves (HW) accompanied by drought are increasing, however, still little is known about its effect on forage plants. A pot experiment was carried out in growth chambers in order to elucidate the multiple response of forage rape to combined HW and drought (HD) under current and elevated CO2 (HD + CO2). Forage rape was proved to be relatively HD-resistant plant, with no