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《Acta Agronomica Sinica》 1994-06
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Study on Inheritance of Salt Tolerance in Soybean

Shao Gui-hua 1) Chang Ru-zhen2) Chen Yi-wu2) Yan Shu-rong1) (Institute of Crop Breeding and Cultivation1) Institute of Crop Germplasm Resources2), CAAS, Beijing 100081, China)  
Crosses were made with salt tolerant and salt sensitive soybean varieties to study the inherit-ance of salt tolerance. The results indicated that the F1, F2 and F3 were all salt tolerant when both parents were salt tolerant; they were all sensitive when both parents were sensitive. When a salt tolerant variety was crossed with a sensitive one, or vice versa the F1 was salt tolerant; the F2 segrigated in a 3 s. t: l s ratio; the F3 lines from salt tolerant F2 plants in a 1 homogeneous s. t: 2 segregating ratio, and lines from sensitive F2 plants were all sensitive. In backcross progenies with sensitive varieties as the recurrent parents, the segrigating ratio was always l s. t: l s. Thus, the results indicated that the salt tolerance of soybean is controlled by one pair of dominant genes in the nucleus where salt tolerance is dominant to sensitiveness.
【Fund】: 国家自然科学基金
【CateGory Index】: S565.1
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