Khedr Rania A, Sorour Sobhy Gh R, Aboukhadrah Saad H, El Shafey Neveen M, Abd Elsalam Hassan E, El-Sharnouby Mohamed E, El-Tahan Amira M
Crops Physiology Research Department, Field Crops Research Institute, ARC, Egypt.
Agronomy Department, Faculty of Agriculture, Kafrelsheikh University, 33516 Kafrelsheikh, Egypt.
Saudi J Biol Sci. 2022 Jan;29(1):534-540. doi: 10.1016/j.sjbs.2021.09.027. Epub 2021 Sep 20.
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) or Humic acid (12 L ha) 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. 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 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.
土壤盐分是小麦生产的主要限制因素；它会导致小麦生长和产量严重下降。在盐渍土壤中，研究了使用一些土壤添加物（对照、糖蜜和腐殖酸）、相容性溶质和生长调节剂（以水为对照、萘乙酸和甘氨酸甜菜碱）来减轻盐分对小麦品种Sids 14和Misr 3的生理、生化及产量的影响。结果表明，除旗叶面积、相对含水量、株高外，Misr 3在所有研究性状上均优于Sids 14，且叶片温度记录值更低且理想。添加糖蜜（24 L/公顷）或腐殖酸（12 L/公顷）显著提高了生理和生化特性。同时，旗叶温度、脯氨酸和丙二醛（MDA）含量降低，产量及其构成因素除穗粒数外也有所增加。叶面喷施30 mg/L的萘乙酸（NAA）或甘氨酸甜菜碱（GB 100 mM）也对研究性状产生了积极影响，其中甘氨酸甜菜碱的相对含水量和Fv/Fm最高。相比之下，NAA的过氧化氢酶（CAT）活性增加最多，穗数/m增加最多，且它们在籽粒产量上无显著差异。在盐渍土壤条件下，建议种植Misr 3并添加糖蜜和GB。
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