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通过多年的田间观察发现:水稻反向温敏不育系雁农S在黑龙江哈尔滨地区的全年最高温时段(7月下旬至8月下旬)败育彻底,不会发生育性转换,自交结实率为0,推测其不育起点温度高于28℃;由雁农S转育而来的大多数粳型反温敏不育株系在7—8月都能完全败育而不发生自交结实现象,表明雁农S来源的不育系在寒地稻区的不育安全期长,不育特性相对稳定,为推动寒地杂交粳稻发展及实现原地制种提供了理想的遗传工具。
Through many years of field observation, it was found that Yannong S, a reverse temperature-sensitive genic male sterile line of rice, was completely aborted in the annual maximum temperature period (from late July to late August) in Harbin, Heilongjiang Province, with no fertility transformation and selfing Seed setting rate was 0, suggesting that the starting temperature of sterility was higher than 28 ℃. Most of japonica-type thermo-thermo-sensitive sterile lines that were transferred from Yannong S could be completely aborted from July to August and did not occur from The results showed that the male sterile lines derived from Yannong S had a long period of infertility in cold paddy areas and relatively stable sterility, which provided an ideal genetic tool for promoting the development of cold-blooming hybrid japonica rice and achieving in situ seed production .