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通过对光敏核不育系 89- 7S不同播期物候、气象平行观测及育性敏感期 (度 )诊断资料分析表明 :89- 7S是目前已育成的少数几个生态适应性广 (不育温度范围宽 ,2 2～ 32℃ ;开花习性好 )的强光敏性核雄不育系 ,7月下旬～ 8月上旬为集中的不育敏感期 ,8月 9～ 17日为转换期 ,此后至 8月底为可育期 ,不育和可育安全期以安排在 8月 5日前、15日后为宜 ,分别对应不育制种和可育繁殖 ,播期为 5月 10日前和 6月 2 0日左右
Through the analysis of different sowing date, meteorological parallel observation and fertility sensitive period (degree) diagnostic data of 89- 7S, the results showed that 89- 7S is a few ecologically-adaptable plants (sterile temperature Wide range of 2 2 ~ 32 ℃; good flowering habits) of the strong light-sensitive nuclear male sterile line late July to early August as a concentrated sterile period of sensitivity, August 9 to 17 for the conversion period, then to The end of August for the fertile period, infertility and fertile safety period to arrange before August 5, 15 days after the appropriate, respectively, corresponding to sterile breeding and fertile breeding, sowing date before May 10 and June 20 Day or so