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Inheritance of the higher proline content characteristic and salt tolerance of high-proline-producing variant of rice

He Daoyao, Yu Shuwen

Shanghai Institute of Plant Physiology,the Chinese Academy of Sciences.Shanghai 200032

Abstract

A high-proline-producing variant of rice was isolated from embryo callus treated with hydroxyproline. The characteristic of high proline content was stable during the long time of subculture, and differentiation and dedifferentiation culture. The regenerated plants and their selfing offsprings also maintained high proline content. Their proline content was much higher than that of the original type taken as control. Experiments on the progenies of hybrids (high-proline-producing variant×other two varieties of rice, W6154s and Nanjing 11) showed that the characteristic of high proline content was hereditary. Under saline stress the germination rate of the hybrid seeds of the variant was markedly higher than that of the original type and another parent (Nanjing 11), and the seedling growth also better. It is showed that the increased salt tolerance of high-proline-producing variant was inheritable.

Key words: Proline salt;Tolerance;Rice;Heredity

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Citing This Article：

He Daoyao, Yu Shuwen. Inheritance of the higher proline content characteristic and salt tolerance of high-proline-producing variant of rice. Acta Physiol Sin 1997; 49 (4): (in Chinese with English abstract).