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根据遗传学原理 ,采用测交、回交、自交及兄妹交的方法 ,研究黔油 2 A的育性遗传规律。结果表明 :黔油 2 A属双基因显性“杂合两型系”,其育性是受两对显性基因 Ms Ms和 Rf Rf互作控制的 ,其中 Ms是显性不育基因 ,Rf是显性恢复基因 ,同时抑制不育基因性的表达 ,使育性恢复可育。其不育株基因型为 Msmsrfrf,保持株基因型为 msmsrfrf,恢复株基因型Ms- Rf Rf和 msm Rf Rf
According to the principle of genetics, the genetic law of fertility in Qianyou 2 A was studied by means of crossbreeding, backcrossing, selfing and sibling mating. The results showed that 2 A genotypes of Qiyanyou were dominant “heterozygous two-type”, and their fertility was controlled by the interaction of two pairs of dominant genes Ms Ms and Rf Rf, in which Ms was a dominant male sterile gene and Rf Is a dominant restorer gene, at the same time inhibiting the expression of infertility gene, fertility restore fertility. The genotype of its sterile line was Msmsrfrf, the genotype of the maintainer was msmsrfrf, the genotypes of Ms-Rf Rf and msm Rf Rf