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Alleviation of salinity stress effects on agro-physiological traits of wheat by auxin, glycine betaine, and soil additives
Saudi Journal of Biological Sciences Pub Date : 2021-09-20 , DOI: 10.1016/j.sjbs.2021.09.027
Rania A Khedr 1 , Sobhy Gh R Sorour 2 , Saad H Aboukhadrah 2 , Neveen M El Shafey 2 , Hassan E Abd Elsalam 3 , Mohamed E El-Sharnouby 4 , Amira M El-Tahan 5
Affiliation  

Soil salinity is a major constraint to wheat production; it causes a severe reduction in wheat growth and yield. Alleviation of salinity effects on physiological, biochemical, and yield of wheat cultivars; Sids 14 and Misr 3 using some soil additions (control, Molasses and Humic acid), compatible solutes, and growth regulators (water as control, Naphthalene acetic acid, and Glycine betaine) were investigated in salt-affected soils. Results indicated that Misr 3 was superior to Sids 14 in all studied characteristics except flag leaf area, relative water content, plant height and recorded lower and desirable value of leaf temperature. The addition of Molasses (24 L ha−1) or Humic acid (12 L ha−1) significantly increased physiological and biochemical characteristics. At the same time, flag leaf temperature, proline, and malondialdehyde (MDA) content were decreased, yield and its attributes also increased except No. kernel spike-1. Foliar spray of Naphthalene acetic acid (NAA) at 30 mg L−1. or glycine betaine (GB 100 mM) also positively affected the studied characteristics, where Glycine betaine recorded the highest Relative water content and Fv/Fm. In contrast, NAA recorded the most increased Catalase (CAT) activity, and the Number of spikes m−2 and insignificant differences were observed between them in grain yield. It could be recommended the cultivation of Misr 3 with Molasses and GB under saline soils.



中文翻译:

生长素、甘氨酸甜菜碱和土壤添加剂减轻盐分胁迫对小麦农业生理性状的影响

土壤盐分是小麦生产的主要制约因素;它导致小麦生长和产量严重下降。减轻盐分对小麦品种生理、生化和产量的影响;Sids 14 和 Misr 3 使用一些土壤添加物(对照、糖蜜和腐植酸)、相容溶质和生长调节剂(水作为对照、萘乙酸和甘氨酸甜菜碱)在盐渍土壤中进行了研究。结果表明,除旗叶面积、相对含水量、株高和记录的较低和理想的叶温值外,Misr 3在所有研究特性上均优于Sids 14。添加糖蜜 (24 L ha -1 ) 或腐植酸 (12 L ha -1) 显着增加生理生化特性。同时,旗叶温度、脯氨酸、丙二醛(MDA)含量均有所下降,除1号核穗外,产量及其属性均有所提高。叶面喷洒 30 mg L -1 的萘乙酸 (NAA) 。或甘氨酸甜菜碱 (GB 100 mM) 也对研究特性产生积极影响,其中甘氨酸甜菜碱记录了最高的相对水含量和 Fv/Fm。相比之下,NAA 记录的过氧化氢酶 (CAT) 活性增加最多,并且在谷物产量中观察到穗数 m -2和它们之间的差异不显着。建议在盐渍土下用糖蜜和 GB 培养 Misr 3。

更新日期:2021-09-20
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