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

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