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探讨有关雄性不育性遗传规律和三系选育工作中的几个问题。认为:出现部分不育或部分恢复株是由于存在弱效或条件敏感基因,胞质基因分离或突变,核基因的体细胞分离或突变,基因的剂量效应,或花粉育性的配子体表现所致。出现自交后代全部能育而测交保持率不超过50%,是由于存在平衡致死系统。出现有完全保持力株的自交后代呈1:1分离,是由于能育基因与配子体型花粉致死基因连锁所致。出现一代保持系是由于连锁互补基因控制所致。出现自交2:1、测交1:1和自交1:0、测交1:2分离是由于育性基因与致死基因的不同连锁关系所致。讨论了群体内有保持力植株的频率和能育胞质与不育胞质的比值的估算法。
Discuss some questions about the genetic law of male sterility and three-line breeding. It is considered that the emergence of partially sterile or partially recovered strains is due to the presence of weak or conditionally sensitive genes, segregation or mutation of cytosolic genes, somatic segregation or mutation of nuclear genes, dose effects of genes, or gametogenesis of pollen fertility . All self-fertile offspring appear to be fertile and the test-keeping rate does not exceed 50% due to the existence of a balanced lethal system. There was a complete retentive strain of selfing offspring was 1: 1 separation, is due to fertile genes and gametophyte pollen lethal gene linkage. The emergence of a generation to maintain the Department is due to the control of the chain complementary genes. There were 2: 1 inbreds, 1: 1 crosses and 1: 0 inbreds, and the 1: 2 segregation was due to the different linkage between fertility genes and lethal genes. The frequency of fertile plants and the ratio of fertile cytoplasm to sterile cytoplasm in the population were estimated.