籼型光温敏核不育水稻不育性的遗传研究

The Inheritance of Photo-Thermo Sensitive Genic Male Steility in Indica Rice(Oryza sativa L.subsp. indica)

研究了4个光温敏核不育水稻的育性在不同遗传背景影响下的遗传表达，结果表明W6154S、W7415S、N12S和N18S的育性均由2对核隐性基因控制，但因遗传背景的不同，育性的遗传表达机制极为复杂．通过对F2、F3群体育性的进一步分析，提出了“育性恢复基因的不完全显性及剂量效应”假说．同时，就分离群体育性分离模式的多态性进行了讨论．

The fertility inheritance and expression under the influence of different genetic background of four Photo-Thermo Sensitive Cenic Male Sterile Rice were studied .The results indicated that the fertility of W6154S, W7415S, N12S and N18S was controlled by two pair of nuclear recessive genes, but their expression and genetic mechanism were very complicated due to the great influence of various genetic background. By thoroughly analyzing the fertility segregation of F2, F3 population, the hypothesis, 'incomplete dominance and dosage effect of restorer genes', was put forward and the poymorphism of fertility segregation was also discussed in this paper.