Salt Tolerance in the Triticeae: Solute Accumulation and Distribution in an Amphidiploid derived fromTriticum aestivumcv. Chinese Spring andThinopyrum bessarabicum

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Abstract
An amphidiploid derived by colchicine treatment of a hybrid between Triticum aestivum cv Chinese Spring and Thinopyrum bessarabicum was found to be more salt tolerant than the wheat cultivars Chinese Spring, Kharchia and Ciano 79 in terms of survival and grain yield at 250 mol m−3 NaCl. Tolerance was related to the ability of the amphidiploid to exclude Na and Cl from the shoots, and particularly from the young leaves, developing inflorescence and grain. There was no relationship between the salt tolerance of the different species and varieties tested and changes in the concentrations of other solutes. The amphidiploid did not inherit the high glycinebetaine concentrations characteristic of the wheatgrass parent. Amphidiploids produced from crosses between Thinopyrum species and wheat may be useful as stress-resistant new crops.

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