水稻光温敏核不育基因与同工酶基因的遗传关系及连锁测定

本试验以光温敏核不育系农垦58S,双8-2S,N_(989)为材料,以花粉育性为指标,研究了不同自然条件,不同光照长度及不同温度处理下同工酶变化与育性变化的相关性,并测定了同工酶基因与光温敏核不育基因的连锁关系。试验结果表明:Adh-1和Est-3与育性有密切关系,不育时,这两位点都表现有效等位基因;可育时,这两位点都表现无效等位基因。控制光温敏核不育的两对基因中,一对与Adh-1密连锁(重组率为0);另一对与Cat-1连锁(重组率为29％)。

STUDY ON THE GENETIC RELATIONSHIPS BETWEEN PHOTOPERIOD-TEMPERATURE SENSITIVE GENIC MALE STERILITY GENES AND ISOZYME GENES AND ITS LINKAGE MEASUREMENT IN RICE (Oryza sativa)

In the present experiment, the correlations between the changes of isozymes and fertility under different natural conditions, different day-light lengths and different temperature treatments were studied by means of the pollen fertility index, using the photoperiod-temperature sensitive genie male-sterile lines (NongKen58S, Shuang8-2S, N9RS). At the same time, the linkage relationships between isozyme genes and sterility genes were tested. The results indicated that there were close relationships between Adh-1, Est-3 and sterility. In the case of fertility and sterility, both of the loci expressed null alleles and active alleles respectiv -ely. One of sterility genes Jinked to Adh-1 with a recombination value of 0, another gene linked to Cat-1 with a recombination value of 29 percent.