Variation in Salt Tolerance of Wheat Cultivars: Role of Glycinebetaine and Ethylene

M.I.R.KHAN; N.IQBAL; A.MASOOD; N.A.KHAN

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Variation in Salt Tolerance of Wheat Cultivars: Role of Glycinebetaine and Ethylene

机译：小麦品种耐盐性的变化：甘氨酸甜菜碱和乙烯的作用

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Four wheat (Triticum aestivum L.) cultivars 711,PBW343,3765 and WH542 were screened for studying variations in glycinebetaine (GB) content and plant dry mass under 100 mmol L-1 NaCl stress.A tolerance index was calculated using plant dry mass data to select salt-tolerant and salt-sensitive types and find association between tolerance index and GB content.Tolerance index has been used as a good criterion to select the tolerant types under high salinity stress.Further,physiological differences in salt-tolerant cultivar 711 and salt-sensitive cultivar WH542 were examined.The salt-tolerant cultivar exhibited greater GB content,which was found correlative with ethylene.The cultivar also showed higher nitrogen (N) content and nitrate reductase activity,reduced glutathione and higher redox state resulting in maximal protection of plant dry mass than the salt-sensitive type.Thus,the content of GB may be considered as important physiological criteria for selecting salt-tolerant wheat types.

机译：筛选了四个小麦（Triticum aestivum L.）711，PBW343、3765和WH542品种，以研究100 mmol L-1 NaCl胁迫下甘氨酸甜菜碱（GB）含量和植物干重的变化。使用植物干重数据计算耐受指数选择耐盐和耐盐类型，并找到耐盐指数和GB含量之间的联系。耐盐指数已成为选择高盐胁迫下耐盐类型的良好标准。耐盐品种711和对耐盐品种WH542进行了研究。耐盐品种的GB含量较高，与乙烯相关;该品种还具有较高的氮（N）含量和硝酸还原酶活性，还原型谷胱甘肽和较高的氧化还原态，从而发挥了最大的保护作用因此，GB的含量可以作为选择耐盐小麦类型的重要生理指标。

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《土壤圈（英文版）》 |2012年第6期|746-754|共9页
作者
M.I.R.KHAN; N.IQBAL; A.MASOOD; N.A.KHAN;
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Department of Botany, Aligarh Muslim University, Aligarh 202002(India);

Department of Botany, Aligarh Muslim University, Aligarh 202002(India);

Department of Botany, Aligarh Muslim University, Aligarh 202002(India);

Department of Botany, Aligarh Muslim University, Aligarh 202002(India);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
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Variation in Salt Tolerance of Wheat Cultivars: Role of Glycinebetaine and Ethylene

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