论文部分内容阅读
用若干常规品种与短光低温不育水稻宜DIS配组,考察双亲及F1在自然低温影响前后的花粉育性,并于不育系稳定不育期间调查F2及F3的育性分离。结果表明:(1)低温是影响双亲及F1育性稳定性的重要生态因子;(2)F1的育性稳定性除与父本的育性稳定性有关外,可能尚与其他因素有关,这种育性稳定性表现是由可遗传因子决定的;(3)短光低温不育特性基本上符合2对独立主基因控制的遗传模式,但可能尚受到众多微效基因的作用,与这2对基因相对应的2对恢复基因的遗传效应可能存在差异。
Some conventional varieties and short-light low-temperature sterile rice should DIS group, investigated the pollen fertility of parents and F1 before and after the impact of natural low temperature, and F2 and F3 fertility segregation investigated during the sterile line. The results showed that: (1) Low temperature was an important ecological factor affecting the fertility stability of parents and F1. (2) The fertility stability of F1 was related to other factors, except for the fertility stability of F1 The fertility stability was determined by heritable factors. (3) The short light and low temperature sterility basically conformed to the genetic model controlled by two independent major genes, but may still be affected by many minor genes. There may be differences in the genetic effects of the two pairs of restorer genes that correspond to the genes.