MORPHO-PHYSIOLOGICAL ADAPTATIONS OF WHEAT GENOTYPES TO SALINITY STRESS
MORPHO-PHYSIOLOGICAL ADAPTATIONS OF WHEAT GENOTYPES TO SALINITY STRESS
复制标题
小麦基因型对盐度胁迫的形态生理适应
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
A. Shereen
中科院分区：
文献类型：
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作者：
Muhammad Athar Khan;M. U. Shirazi;W. Mahboob;S. M. Mujtaba;M. A. Khan;S. Mumtaz;A. Shereen
为探讨小麦耐盐性的形态生理变化，采用随机完全区组设计(RCBD)，在巴基斯坦坦多果酱(Tando Jam，NIA)农业核研究所进行了3次重复的温室试验。研究采用了两个盐度水平(对照和12dsm-1氯化钠)和五个小麦基因型。由于盐分胁迫的影响，所有小麦品种的株高、总分蘖数、有效分蘖数、穗长、每穗颖花数、每穗粒数、千粒重、单株粒重等产量指标均出现下降，但ESW-9525的下降幅度显著小于其他小麦品种。由于盐度的影响，所有品种的脯氨酸、甘氨酸、甜菜碱和总可溶性糖等生化指标均有所增加。小麦品种Bakhtawar的钠含量最高，而小麦品种ESW9525的钠含量最低，与产量的相关性最高。耐盐性强、稳定性好的品种为ESW-9525和Sarsabz，在12DS M1盐度下产量最高。
To explore morpho-physiological alteration in wheat for salinity tolerance, a glass house experiment was laid out in randomized complete block design (RCBD) with three replications at Nuclear Institute of Agriculture, (NIA) Tando Jam, Pakistan. Studies were conducted with two levels of salinity (Control, and 12 dS m -1 NaCl) and five wheat genotypes. Due to salinity stress morphological and yield attributes like plant height, total tillers, productive tillers, spike length, number of spikelets per spike, number of grain per spike, 1000 grain weight, grain weight per plant were decreased in all wheat genotypes, however, wheat ESW-9525 showed significantly less reduction in all these parameters than other wheat genotypes. Biochemical attributes like proline glycine betaine and total soluble sugars were increased in all the genotypes due to salinity. Wheat geotype Bakhtawar maintained the highest Na while the minimum Na contents were found in ESW9525 that had the highest correlation with grain yield. The tolerant and stable cultivars were ESW-9525 and Sarsabz which had highest yield at 12 dS m1 salinity than other cultivars.
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