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Seed mass, dormancy and germinability variation among maternal plants of four Arabian halophytes Seed Sci. Res. (IF 2.25) Pub Date : 2022-06-13 Arvind Bhatt, David J Gallacher, Alfredo Jarma-Orozco, Marcelo F. Pompelli
Coastal desert vegetation of the Arabian Peninsula is almost entirely dominated by halophytes. Natural populations provide a genetic resource for ecological remediation and may also have direct economic value. High intrapopulation variation of seed traits is presumed to increase population persistence in the unpredictable climatic conditions of this hyper-arid desert. We investigated whether intrapopulation
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Oxidant system and ABA drive germination in seeds of palm species with differences in desiccation tolerance Seed Sci. Res. (IF 2.25) Pub Date : 2022-06-01 Talita Raissa Silva Santos, Elisa Monteze Bicalho, Queila Souza Garcia
We investigated the thermal thresholds to seed germination and the variations in abscisic acid (ABA) levels and oxidative metabolism during seed dormancy-breaking and germination in two palm species with differences in desiccation tolerance. We used Mauritia flexuosa (buriti palm, desiccation-sensitive seeds) from swampy habitats (Veredas) and Attalea speciosa (babassu, desiccation-tolerant seeds)
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Correlated evolution of seed mass and genome size varies among life forms in flowering plants Seed Sci. Res. (IF 2.25) Pub Date : 2022-05-13 Angelino Carta, Efisio Mattana, John Dickie, Filip Vandelook
Seeds show important variation as plant regenerative units among species, but their evolutionary co-variations with other plant characteristics are still poorly understood. Whilst a positive association of seed mass with genome size (GS) and life forms has already been documented, a broad-scale quantification of their evolutionary correlation and adaptive selection has never been conducted. Here, we
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Cleistogamous spike and chasmogamous spike carbon remobilization improve the seed potential yield of Cleistogenes songorica under water stress Seed Sci. Res. (IF 2.25) Pub Date : 2022-04-27 Zhengshe Zhang, Mengjie Bai, Qibo Tao, Fan Wu, Qi Yan, Zhibiao Nan, Yanrong Wang, Jiyu Zhang
Developmental signals and environmental stresses regulate carbon distribution in the vegetative and reproductive organs of plants and affect seed yield. Cleistogenes songorica is a xerophytic grass with great potential application value in ecological restoration. However, how carbohydrate transport and distribution during grain filling affect the seed yield of C. songorica under water stress is not
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Seed traits and phylogenomics: prospects for the 21st century Seed Sci. Res. (IF 2.25) Pub Date : 2022-04-06 Mariko Nonogaki,Satoru Yamazaki,Eri Nishiyama,Kazuhiko Ohshima,Hiroyuki Nonogaki
Abstract Genetic and biochemical studies have greatly advanced our understanding of the biology of seeds in recent years. Another area of study, which could accelerate contemporary seed biology research, is phylogenomics that integrates the wealth of genome sequence data with evolutionary biology. The recent phylogenomic study of the DELAY OF GERMINATION1 family genes exemplifies how the molecular
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More on seed longevity phenotyping Seed Sci. Res. (IF 2.25) Pub Date : 2022-03-29 Fiona R. Hay, Rachael M. Davies, John B. Dickie, David J. Merritt, Dustin M. Wolkis
Understanding the relative longevity of different seed lots, perhaps of different species or genotypes, but also following production under different environments or using different cultivation methods, or following different post-harvest treatments, is relevant to anyone concerned with the retention of seed lot viability and vigour during storage. However, different scientists over the years have
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Developing soybean seed germination: low ABA and high EXP1 gene expression promote embryonic axis growth whereas the seed coat delays radicle protrusion Seed Sci. Res. (IF 2.25) Pub Date : 2022-03-23 Nidia H. Montechiarini, Eligio N. Morandi, Carlos O. Gosparini
Seed germination implies an expansion process restarting the growth of the embryonic axis (Ax) and which is completed by radicle emergence through the seed covering layers. In developing soybean seeds, abscisic acid in Ax (ABAa) mainly inhibits Ax growth. Additionally, the expression of the EXP1 gene at the elongation zone (EZ) was found to be involved in the promotion of mature soybean Ax growth,
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Width of the temperature range for seed germination of herbaceous plant species in temperate eastern North America: life cycles, seasons and temperature variation and implication for climate warming Seed Sci. Res. (IF 2.25) Pub Date : 2022-02-02 Carol C. Baskin, Jerry M. Baskin, Xiao Wen Hu, Chun Hui Zhang
To persist (without immigration) in habitats with unpredictable environmental conditions, annuals must produce seeds each year or have a seed bank. Thus, we predicted that compared to perennials, annuals have a wider germination temperature range (GTR, the difference in temperature between the week with the highest and the week with the lowest germination during the natural germination season). We
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Syringaldehyde is a novel smoke-derived germination cue for the native fire-chasing tobacco, Nicotiana attenuata Seed Sci. Res. (IF 2.25) Pub Date : 2022-01-31 Dechang Cao, Matthias Schöttner, Rayko Halitschke, Dapeng Li, Gundega Baldwin, Catarina Rocha, Ian T. Baldwin
Smoke-derived seed germination is an important trait for plants to colonize postfire habitats. The well-characterized smoke-derived chemicals of karrikins germinate seeds of species not known to occur after fires in nature. Hence, the ecologically relevant germination cues in smoke remain to be explored for native postfire plants. With the fire-chaser, Nicotiana attenuata, we revisit a bioassay-driven
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Emergence speed comparison by non-linear regression and approached by time-to-event models for censored data Seed Sci. Res. (IF 2.25) Pub Date : 2022-01-31 Thomas B. Michelon, Andreza C. Belniaki, Cesar A. Taconeli, Elisa S. N. Vieira, Maristela Panobianco
Determining the germination speed is essential in experiments in the field of seed technology, as it allows the performance evaluation of a seed lot and the creation of predictive models. To this end, the literature addresses several methods and indexes. The objective of this study was to compare the main methods of emergence speed analysis in seeds, namely the non-linear regression models and the
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Seeds of the threatened dry rainforest tree Cadellia pentastylis (Surianaceae) are non-dormant Seed Sci. Res. (IF 2.25) Pub Date : 2022-01-10 Nathan J. Emery, Justin C. Collette
Cadellia pentastylis (Surianaceae) is an Australian endemic threatened rainforest tree. Irregular flowering and fruiting events coupled with high rates of infertility and insect predation has meant that seed testing has not been possible for this species. Seeds were opportunistically collected from a wild population in early 2021, which allowed for the first germination tests to be conducted. In this
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Environmental effect on temporal patterns in lentil seed quality development Seed Sci. Res. (IF 2.25) Pub Date : 2022-01-31 Katherine J. Whitehouse, Sally L. Norton
To maximize seed longevity, seeds should be harvested at optimal maturity, that is, when seeds have acquired maximum physiological quality before deterioration begins. The aim of this study was to map the variation in temporal patterns of lentil (Lens culinaris Medik.) seed quality development when grown across four regeneration environments, which differ in the level of temperature and humidity control
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The J. Derek Bewley Career Lecture. Seeds–plants–crops–biodiversity–environment–people: illustrating understanding and ideas Seed Sci. Res. (IF 2.25) Pub Date : 2022-01-10 Richard H. Ellis
The J. Derek Bewley Career Lectures presented at the triennial meetings of the International Society of Seed Science support early-career seed scientists by providing retrospective views, from those late in their careers, of lessons learned and future implications. Ambition, ability, inspiration, foresight, hard work and opportunity are obvious career requirements. The importance of mentoring and teamwork
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Seed recovery and germination rate after gut passage by Korean water deer (Hydropotes inermis argyropus) Seed Sci. Res. (IF 2.25) Pub Date : 2021-12-17 Seung-Kyung Lee, Woo-Jin Shin, Sangjin Ahn, Youngeun Kim, Jong-Taek Kim, Eun Ju Lee
Large herbivores can disperse seeds over long distances through endozoochory. The Korean water deer (Hydropotes inermis argyropus), an internationally vulnerable species but locally considered a vermin, is a potential endozoochorous seed dispersal vector. In this study, feeding experiments were conducted to test the efficiency of seed dispersal through gut ingestion by the Korean water deer, its temporal
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Serotiny in Melocactus matanzanus (Cactaceae) and role of cephalium in dispersal of seeds after the individual's death Seed Sci. Res. (IF 2.25) Pub Date : 2021-12-16 Duniel Barrios, Sandy Toledo, Jorge A. Sánchez, Luis R. González-Torres
Serotiny is a strategy in which the retention of mature seeds in parent structures allows plants to cope with environmental variability like heat, drought or fire. Although this phenomenon might be common in Cactaceae, and particularly in Melocactus, it has generally been scarcely addressed. The main goal of our work is to investigate if there are seeds hidden in the cephalium of Melocactus matanzanus
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The great diversity in kinds of seed dormancy: a revision of the Nikolaeva–Baskin classification system for primary seed dormancy Seed Sci. Res. (IF 2.25) Pub Date : 2021-12-01 Jerry M. Baskin, Carol C. Baskin
This review provides a revised and expanded word-formula system of whole-seed primary dormancy classification that integrates the scheme of Nikolaeva with that of Baskin and Baskin. Notable changes include the following. (1) The number of named tiers (layers) in the classification hierarchy is increased from three to seven. (2) Formulae are provided for the known kinds of dormancy. (3) Seven subclasses
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Phytohormone dynamics impact fatty acid and oil accumulation during soybean seed maturation Seed Sci. Res. (IF 2.25) Pub Date : 2021-11-09 Thien Q. Nguyen, Anna B. Kisiala, Nguyen Ngoc Hai, Suresh Narine, R. J. Neil Emery
Fatty acid (FA) levels and profiles are vital for soybean oil quality, while cytokinins (CKs) and abscisic acid (ABA) are potent regulators of plant growth and development. Previous research suggested associations between FA biosynthesis and hormonal signalling networks; however, hormonal regulation of FA accumulation during soybean (Glycine max) seed maturation has never been measured. We analysed
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How regional climate and seed traits interact in shaping stress–tolerance of savanna seeds? Seed Sci. Res. (IF 2.25) Pub Date : 2021-11-02 Leandro C. Ribeiro, Eduardo R. M. Barbosa, Fabian Borghetti
Functional traits related to regeneration responses to the environment are highly determinants of distribution patterns of plant communities. A large body of studies on seed traits suggests that regional climate may act as a strong filter of plant recruitment; however, few studies have evaluated the relative importance of seed traits and environmental filters for seed persistence at the population
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Relationship of the lateral embryo (in grasses) to other monocot embryos: a status up-grade Seed Sci. Res. (IF 2.25) Pub Date : 2021-10-19 Carol C. Baskin, Jerry M. Baskin
Martin placed the lateral embryo, which occurs only in grasses, adjacent to the broad embryo at the base of his family tree of seed phylogeny. Since Poales and Poaceae are derived monocots, we questioned the evolutionary relationship between the lateral embryo and other kinds of monocot embryos. Information was compiled on embryo and seed characteristics for the various families of monocots, kind of
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Deep complex morphophysiological dormancy in seeds of Viburnum plicatum var. formosanum (Adoxaceae) from subtropical mountains Seed Sci. Res. (IF 2.25) Pub Date : 2021-09-15 Shun-Ying Chen, Chiung-Pin Liu, Carol C. Baskin, Ching-Te Chien
Viburnum is a temperate-zone genus that also occurs in mountains of South America and Malesia, and seeds of many species have morphophysiological dormancy (MPD). Information on the level of MPD in seeds of species in various clades of Viburnum potentially would increase our understanding of the evolutionary relationships between the nine levels of MPD. Our aim was to determine the level of MPD in seeds
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Differences in seed germination response of two populations of Phelipanche ramosa (L.) Pomel to a set of GR24 concentrations and durations of stimulation Seed Sci. Res. (IF 2.25) Pub Date : 2021-09-15 Stéphanie Gibot-Leclerc, Manon Connault, Rémi Perronne, Fabrice Dessaint
Phelipanche ramosa is a major weed holoparasite characterized by a broad host range with a suboptimal development on numerous hosts, suggesting inter- or intra-species specificities. Seeds of P. ramosa germinate after exposure to exogenous chemicals exuded by surrounding host roots such as strigolactones, the concentrations of these germination stimulants varying between hosts. In France, P. ramosa
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A special section on pre-harvest sprouting in cereals Seed Sci. Res. (IF 2.25) Pub Date : 2021-09-01 Jirui Wang
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Delayed germination of Brassica parachinensis seeds by coumarin involves decreased GA4 production and a consequent reduction of ROS accumulation Seed Sci. Res. (IF 2.25) Pub Date : 2021-08-10 Bing-Xian Chen, Yuan-Xuan Peng, Xue-Qin Yang, Jun Liu
The plant allelochemical coumarin effectively inhibits the germination of Brassica parachinensis (B. parachinensis) seeds. Quantification of endogenous phytohormones showed that contents of abscisic acid (ABA), ABA glucose ester, gibberellin A20 (GA20), GA3, GA15, GA24, GA9 and GA4 were higher in germinating seeds than in seedlings. Moreover, the presence of coumarin significantly reduced the content
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Osmo-priming in tomato seeds down-regulates genes associated with stress response and leads to reduction in longevity Seed Sci. Res. (IF 2.25) Pub Date : 2021-07-29 Ana C.P. Petronilio, Thiago B. Batista, Edvaldo A. Amaral da Silva
Tomato seeds subjected to osmo-priming show fast and more uniform germination. However, osmo-priming reduces seed longevity, which is a complex seed physiological attribute influenced by several mechanisms, including response to stress. Thus, to have new insights as to why osmo-primed tomato seeds show a short life span, we performed a transcript analysis during their priming. For that, we performed
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Seed dormancy of Lolium perenne L. related to the maternal environment during seed filling Seed Sci. Res. (IF 2.25) Pub Date : 2021-07-15 Rodrigo Fernández, Guillermo R. Chantre, Juan P. Renzi
Lolium perenne L. (perennial ryegrass) shows variable levels of seed physiological dormancy (PD), which depends on the genotype and environmental condition during seed development. To analyse the effect of field temperature and precipitation during seed filling on the PD, two cultivars were sown on five dates in 2014 and 2015. After harvest, the level of seed PD was 4–28%. High-temperature stress (>29°C)
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Quantifying seed germination based on thermal models to predict global climate change impacts on Cerrado species Seed Sci. Res. (IF 2.25) Pub Date : 2021-07-02 Amanda Ribeiro Correa, Ana Mayra Pereira da Silva, Carita Rodrigues de Aquino Arantes, Sebastião Carneiro Guimarães, Elisangela Clarete Camili, Maria de Fátima Barbosa Coelho
Seed germination is regulated by temperature and can thus be quantified by thermal models, which can predict germination occurrence in biomes and plant survival under possible climate change scenarios. The objective of this study was to quantify germination based on thermal time and survival risk of 14 species in the Brazilian Cerrado in scenarios of future climate change. Seeds were collected in the
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Investigation of flavonoid expression and metabolite content patterns during seed formation of Artemisia sphaerocephala Krasch. Seed Sci. Res. (IF 2.25) Pub Date : 2021-07-02 Chengshuai Li, Lijing Zhang, Decao Niu, Shuzhen Nan, Xiumei Miao, Xiaowei Hu, Hua Fu
Flavonoids are a group of phenolic secondary metabolites in plants that have important physiological, ecological and economic value. In this study, using the desert plant Artemisia sphaerocephala Krasch. as the sample material, the content and components of the total flavonoids in its seeds at seven different developmental stages were determined. In addition, the genes involved in flavonoid metabolism
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Activation and activity of plasma membrane H+-ATPase: key events in germinating Vicia faba seeds Seed Sci. Res. (IF 2.25) Pub Date : 2021-05-06 N.V. Obroucheva, S.V. Lityagina, I.A. Sinkevich
The regulation of plasma membrane H+-ATPase was considered in imbibing Vicia faba seeds, a distinctive feature of which is germination by cell elongation, whereas the mitotic activity starts later. The enzyme activation is known to precede germination because it provides H+ ion efflux from the cytoplasm to cell walls which favours their modification and loosening, being the prerequisites of cell elongation
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Desiccation tolerance and sensitivity of selected tropical montane species in Sri Lanka Seed Sci. Res. (IF 2.25) Pub Date : 2021-04-30 Yasoja S. Athugala, K. M. G. Gehan Jayasuriya, A. M. T. A. Gunaratne, Carol C. Baskin
Although the level of seed desiccation sensitivity (LSDS) may have an impact on plant species conservation, information is available for <10% of tropical angiosperms. A study was conducted to assess the LSDS of 28 tropical montane species in Sri Lanka. Seeds were extracted from freshly collected fruits. Initial weight was recorded, and thousand seed weight (TSW) was calculated. Seed moisture content
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Thermal requirements and germination niche breadth of Polygonum ferrugineum Wedd. from southeastern Brazil Seed Sci. Res. (IF 2.25) Pub Date : 2021-04-30 Andréa R. Marques, Ana Letícia B. R. Gonçalves, Fábio S. Santos, Diego Batlla, Roberto Benech-Arnold, Queila S. Garcia
Temperature may regulate seed dormancy and germination and determine the geographical distribution of species. The present study investigated the thermal limits for seed germination of Polygonum ferrugineum (Polygonaceae), an aquatic emergent herb distributed throughout tropical and subtropical America. Seed germination responses to light and temperature were evaluated both before (control) and after
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Using seed respiration as a tool for calculating optimal soaking times for ‘on-farm’ seed priming of barley (Hordeum vulgare) — ERRATUM Seed Sci. Res. (IF 2.25) Pub Date : 2021-04-29 Javier Carrillo-Reche,Adrian C. Newton,Richard S. Quilliam
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Does the lag time between radicle and epicotyl emergences in acorns of pedunculate oak (Quercus robur L.) depend on the duration of cold stratification and post-stratification temperatures? Modelling with the sigmoidal growth curves approach Seed Sci. Res. (IF 2.25) Pub Date : 2021-04-29 Szymon Jastrzębowski, Joanna Ukalska, Jeffrey L. Walck
The objective of this study was to determine how the current (10–16 weeks) and predicted future (2–8 weeks) length of cold stratification and current and predicted future post-stratification temperatures influence radicle and epicotyl emergence in acorns of Quercus robur. We tested radicle and epicotyl emergence at two temperatures corresponding to the current (15/6°C) and predicted future early autumn
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Phenotyping for resistance to pre-harvest sprouting in grain sorghum Seed Sci. Res. (IF 2.25) Pub Date : 2021-04-28 María Verónica Rodríguez, Gonzalo Joaquín Arata, Sandra Mabel Díaz, Santiago Rentería, Roberto L. Benech-Arnold
Pre-harvest sprouting (PHS) is a common threat to cereal crops in which the grain maturation phase takes place under rainy, moist conditions. Susceptibility to PHS is higher in sorghum genotypes displaying low levels of seed dormancy before harvest maturity. Other attributes such as glume or panicle morphology may also affect susceptibility to PHS. Breeding for resistance to PHS in grain sorghum requires
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The genetics of late maturity alpha-amylase (LMA) in North American spring wheat (Triticum aestivum L.) Seed Sci. Res. (IF 2.25) Pub Date : 2021-04-09 Chang Liu, Rehana S. Parveen, Samuel R. Revolinski, Kimberly A. Garland Campbell, Michael O. Pumphrey, Camille M. Steber
Genetic susceptibility to late maturity alpha-amylase (LMA) in wheat (Triticum aestivum L.) results in increased alpha-amylase activity in mature grain when cool conditions occur during late grain maturation. Farmers are forced to sell wheat grain with elevated alpha-amylase at a discount because it has an increased risk of poor end-product quality. This problem can result from either LMA or preharvest
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Investigating conditions that induce late maturity alpha-amylase (LMA) using Northwestern US spring wheat (Triticum aestivum L.) Seed Sci. Res. (IF 2.25) Pub Date : 2021-04-07 Chang Liu, Keiko M. Tuttle, Kimberly A. Garland Campbell, Michael O. Pumphrey, Camille M. Steber
The wheat industry rejects grain with unacceptably high α-amylase enzyme levels due to the risk of poor endproduct quality. There are two main causes of elevated grain α-amylase: (1) preharvest sprouting in response to rain before harvest and (2) late maturity α-amylase (LMA) induction in response to a cool temperature shock during late grain development. LMA induction was detected in a panel of 24
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Characterization and expression quantitative trait loci analysis of TaABI4, a pre-harvest sprouting related gene in wheat Seed Sci. Res. (IF 2.25) Pub Date : 2021-03-25 Chunsheng Xiao, Yujiao Liu, Wenshuai Chen, Jian Yang, Mengping Cheng, Calum Watt, Jingye Cheng, Zhenzhong Wang, Zhi Tan, MaoLian Li, Jirui Wang
Pre-harvest sprouting (PHS) induced by the absence of seed dormancy causes a severe reduction in crop yield and flour quality. In this study, we isolated and characterized TaABI4, an ABA-responsive transcription factor that participates in regulating seed germination in wheat. Sequence analysis revealed that TaABI4 has three homologues, located on chromosomes 1A/1B/1D. TaABI4 contains a conserved AP2
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Using seed respiration as a tool for calculating optimal soaking times for ‘on-farm’ seed priming of barley (Hordeum vulgare) Seed Sci. Res. (IF 2.25) Pub Date : 2021-03-03 Javier Carrillo-Reche, Adrian C. Newton, Richard S. Quilliam
A low-cost technique named ‘on-farm’ seed priming is increasingly being recognized as an effective approach to maximize crop establishment. It consists of anaerobically soaking seeds in water before sowing resulting in rapid and uniform germination, and enhanced seedling vigour. The extent of these benefits depends on the soaking time. The current determination of optimal soaking time by germination
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Estimation of thermal time model parameters for seed germination in 15 species: the importance of distribution function Seed Sci. Res. (IF 2.25) Pub Date : 2021-03-02 Dali Chen, Xianglai Chen, Jingjing Wang, Zuxin Zhang, Yan Wang, Cunzhi Jia, Xiaowen Hu
Thermal time models have been widely applied to predict temperature requirements for seed germination. Generally, a log-normal distribution for thermal time [θT(g)] is used in such models at suboptimal temperatures to examine the variation in time to germination arising from variation in θT(g) within a seed population. Recently, additional distribution functions have been used in thermal time models
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Post-dispersion humidity condition alters the surface of the testa and the proportion of seeds with physical dormancy in Erythrina speciosa Seed Sci. Res. (IF 2.25) Pub Date : 2021-02-10 Camila R. Magalhães, Queila S. Garcia, Denise M.T. Oliveira
Seeds of Papilionoideae (Leguminosae) species lose water after dispersal, increasing the proportion of water-impermeable seeds (physical dormancy, PY). However, changes in testa structure during this process remain unknown. The present study investigated how variation in relative humidity (RH) during the post-dispersion period affects the proportion of seeds of Erythrina speciosa with PY. Seeds from
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A comparative study on temperature and water potential thresholds for the germination of Betula pendula and two Mediterranean endemic birches, Betula aetnensis and Betula fontqueri Seed Sci. Res. (IF 2.25) Pub Date : 2021-02-03 V. Ranno, C. Blandino, G. Giusso del Galdo
The influence of temperature and water availability on seed germination can vary across the geographic range of species with a large distribution. Betula pendula is a widely spread European tree that has differentiated into two narrowly distributed taxa, endemic to Mediterranean mountains: Betula aetnensis in Sicily and B. fontqueri in Spain and Morocco. We tested the hypothesis that the regeneration
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Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) Seed Sci. Res. (IF 2.25) Pub Date : 2021-02-02 Simon Kallow, Rachael Davies, Bart Panis, Steven B. Janssens, Filip Vandelook, Arne Mertens, Rony Swennen, Maimun Binti Tahir, John Dickie
Seed conservation of banana crop wild relatives (Musa L. spp.) is limited because of lack of knowledge about their germination ecology. Musa acuminata Colla, the most important banana crop wild relative, is distributed in tropical and subtropical Asian and Pacific rainforests and colonizes disturbed sites. The role of temperature in stimulating/inhibiting germination to detect disturbance when canopy
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The role of wild rice (Oryza rufipogon) awns in seed dispersal Seed Sci. Res. (IF 2.25) Pub Date : 2021-01-21 Yaddehige P.J. Amarasinghe, Mitsuharu Otsuka, Sathya Lim, Ryo Ishikawa, Takashige Ishii
Cultivated rice (Oryza sativa L.) was domesticated from the Asian wild species O. rufipogon. Compared with cultivated rice, wild rice has spikelets/seeds with long barbed awns. In order to evaluate the role of awns in wild rice, four seed groups with different awn lengths (full, half, quarter and no awns) were prepared, and the following seed dispersal movements were investigated under simulated natural
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Luiz F. G. Labouriau and the dawn of seed science in Brazil Seed Sci. Res. (IF 2.25) Pub Date : 2021-01-07 L. Felipe Daibes, Fabian Borghetti, Alfredo G. Ferreira
Luiz Fernando Gouvêa Labouriau (1921–1996) was a pioneer plant biologist who made significant contributions to plant physiology, mostly by bringing seed germination into a thermobiological context. His studies have set the foundations of seed science in Brazil and keep inspiring researchers until now.
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Seed enhancement technologies to improve germination and emergence of Australian native Poaceae Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-23 Fernanda Caro Beveridge, Alwyn Williams, Steve W. Adkins
Using seeds to restore natural ecosystems has a greater chance of success if the seeds used are ready to germinate given appropriate environmental conditions. For Australian native Poaceae species, seed quality and dormancy can impose constraints on restoration success. In this study, germination biology of three Australian native Poaceae species, such as Cymbopogon refractus, Capillipedium spicigerum
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Characterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-22 Josefina Hepp, Miguel Gómez, Pedro León-Lobos, Gloria Montenegro, Luis Vilalobos, Samuel Contreras
The genus Nolana (Solanaceae) comprises numerous species endemic to the coastal Atacama Desert of Chile and Peru of high ornamental potential and conservation value. The environments in which these species have evolved and are present today correspond to particular conditions in the midst of a hyper-arid habitat, so the study of their germination requirements and characterisation of seed dormancy becomes
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Shrub canopy interception of diaspores dispersed by wind Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-17 Xuanping Qin, Zhimin Liu, Minghu Liu, Wei Liang, Carol C. Baskin, Jerry M. Baskin, Zhiming Xin, Xinle Li, Zhigang Wang, Quanlai Zhou, Fengmin Luo, Junliang Gao, Gerile Naren
Interception by plant canopies during wind dispersal can affect the final destination of diaspores. However, how the interaction of wind speed, canopy type and diaspore attributes affects interception of diaspores by the plant canopy has rarely been studied. We investigated canopy interception for 29 species with different diaspore attributes, six canopy types and six wind speeds in controlled experiments
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A simple standardized protocol to evaluate the reliability of seed rain estimates Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-16 André J. Arruda, Fernando A.O. Silveira, Elise Buisson
Seed dispersal has key implications for community dynamics and restoration ecology. However, estimating seed rain (the number and diversity of seeds arriving in a given area) is challenging, and the lack of standardization in measurement prevents cross-site comparisons. Seed trap effectiveness and accuracy of seed sorting methods are key components of seed rain estimates in need of standardization
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Investigation of 18 physiologically dormant Australian native species: germination response, environmental correlations and the implications for conservation Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-15 Justin C. Collette, Mark K.J. Ooi
For physiologically dormant (PD) species in fire-prone environments, dormancy can be both complex due to the interaction between fire and seasonal cues, and extremely deep due to long intervals between recruitment events. Due to this complexity, there are knowledge gaps particularly surrounding the dormancy depth and cues of long-lived perennial PD species. This can be problematic for both in situ
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Protection of Italian ryegrass (Lolium multiflorum L.) seedlings from salinity stress following seed priming with L-methionine and casein hydrolysate Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-07 Keum-Ah Lee, Youngnam Kim, Hossein Alizadeh, David W.M. Leung
Seed priming with water (hydropriming or HP) has been shown to be beneficial for seed germination and plant growth. However, there is little information on the effects of seed priming with amino acids and casein hydrolysate (CH) compared with HP, particularly in relation to early post-germinative seedling growth under salinity stress. In this study, Italian ryegrass seeds (Lolium multiflorum L.) were
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Improved two-step analysis of germination data from complex experimental designs Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-04 Signe M. Jensen, Dustin Wolkis, Eshagh Keshtkar, Jens C. Streibig, Christian Ritz
Germination experiments are becoming increasingly complex and they are now routinely involving several experimental factors. Recently, a two-step approach utilizing meta-analysis methodology has been proposed for the estimation of hierarchical models suitable for describing data from such complex experiments. Step 1 involves fitting models to data from each sub-experiment, whereas Step 2 involves combination
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Let us have a functional view of seeds! A special Issue on “Functional Seed Ecology” Seed Sci. Res. (IF 2.25) Pub Date : 2020-12-01 Peter Poschlod
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The expansin EXP1 gene in the elongation zone is induced during soybean embryonic axis germination and differentially expressed in response to ABA and PEG treatments Seed Sci. Res. (IF 2.25) Pub Date : 2020-11-27 Nidia H. Montechiarini, Luciana Delgado, Eligio N. Morandi, Néstor J. Carrillo, Carlos O. Gosparini
During soybean seed germination, the expansive growth potential of the embryonic axes is driven by water uptake while cell wall loosening occurs in cells from the elongation zone (EZ). Expansins are regarded as primary promoters of cell wall remodelling in all plant expansion processes, with the expression profiles of the soybean expansins supporting their cell or tissue specificity. Therefore, we
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‘Dust seeds’ with undifferentiated embryos and their germination in mycoheterotrophic Monotropoideae (Ericaceae) Seed Sci. Res. (IF 2.25) Pub Date : 2020-11-24 Jerry M. Baskin, Carol C. Baskin
‘Dust seeds’ with an undifferentiated (organless) embryo are known to be produced by mycoheterotrophic species (MH) in nine families of angiosperms. However, aside from the numerous studies on seed germination of orchids, relatively little is known about germination in MH families. In the Ericaceae, some degree of mycoheterotrophy (full, partial or initial) and dust seeds with an undifferentiated embryo
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Individual crop size increases predispersal predation by beetles in a tropical palm Seed Sci. Res. (IF 2.25) Pub Date : 2020-11-24 Morgana Maria Arcanjo Bruno, Klécia Gili Massi, Alexander V. Christianini, John du Vall Hay
Predispersal seed predation is one of the main causes of seed mortality in plant populations, contributing to decreased plant recruitment. Seed loss has previously been found to be related to crop size. Thus, we examined the influence of individual crop size on predispersal seed predation by beetles in the palm Syagrus flexuosa in the Brazilian savanna. The study was carried out in three tropical woodland
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Culturable endophytic bacteria from Phelipanche ramosa (Orobanchaceae) seeds Seed Sci. Res. (IF 2.25) Pub Date : 2020-11-17 Katarzyna Durlik, Paulina Żarnowiec, Renata Piwowarczyk, Wiesław Kaca
Endophytic microbiomes play a beneficial role in the development and protection of plants. However, seed-borne endophytic bacteria have not yet been fully explored. Investigation of parasitic plants, whose existence depends on yet poorly understood and complicated relationships with microorganisms and hosts, is particularly crucial. Endophytic bacteria promote seed conservation and facilitate seed
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Light affects the germination and normal seedling development of Neotropical savanna grasses Seed Sci. Res. (IF 2.25) Pub Date : 2020-11-11 Claudiana M. Pereira, Rebeca N.A. Figueirôa, Hudson G.V. Fontenele, Heloisa S. Miranda
The Cerrado is a Neotropical savanna where grasses are a major biomass component in the open vegetation physiognomies. Invasive grasses are widely used as pastures in the Cerrado, and their presence may displace native species. The persistence of native grasses relies also on reproduction via seeds, which is often dependent on seeds found buried in the soil seed bank. The literature about the effects
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A meta-analysis of the effects of treatments used to break dormancy in seeds of the megagenus Astragalus (Fabaceae) Seed Sci. Res. (IF 2.25) Pub Date : 2020-11-04 Elias Soltani, Jerry M. Baskin, Carol C. Baskin, Fatemeh Benakashani
Astragalus is the largest genus of seed plants with 3000 or more species that occurs naturally on several continents. The genus has some use as a forage and medicine and in industry, and many of the species are rare endemics threatened with extinction. The seeds are reported to be dormant at maturity, and various treatments have been used in an attempt to germinate them. Our primary aim was to determine
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Filling gaps in the seed dispersal effectiveness model for Prosopis flexuosa: quality of seed treatment in the digestive tract of native animals Seed Sci. Res. (IF 2.25) Pub Date : 2020-10-28 Claudia M. Campos, Liliana Ramos, Noelia Manrique, Mónica I. Cona, Carmen Sartor, Claudia de los Ríos, Flavio M. Cappa
For endozoochorous species, the quality component of seed dispersal effectiveness depends in part on the treatment seeds receive in the animal's gut. Covering a variety of taxa, diet, digestion system and body size of Prosopis flexuosa seed dispersers, we analysed differences among species in (1) mean retention time of ingested seeds, (2) recovery of viable seeds, (3) seed germination in comparison
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Stress–response relationships related to ageing and death of orthodox seeds: a study comparing viability and RNA integrity in soya bean (Glycine max) cv. Williams 82 Seed Sci. Res. (IF 2.25) Pub Date : 2020-09-15 Christina Walters, Margaret B. Fleming, Lisa M. Hill, Emma J. Dorr, Christopher M. Richards
Characterizing non-lethal damage within dry seeds may allow us to detect early signs of ageing and accurately predict longevity. We compared RNA degradation and viability loss in seeds exposed to stressful conditions to quantify relationships between degradation rates and stress intensity or duration. We subjected recently harvested (‘fresh’) ‘Williams 82’ soya bean seeds to moisture, temperature and