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.