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1995年1—5月,在广州利用玻璃温室加温冬繁籼型水稻低温敏核不育系培矮64s和GD-2s原种.当不育系进入育性转换敏感期时,温室室温调控至日均温约23℃,检查花粉育性和自然结实率,结果表明,培矮64s的结实率为50.7%,单株产量平均为3.5g.培矮64s原种温室冬繁的成功,为现有种量少、繁种难、提纯复壮株严格的低温敏核不育系加速世代扩大繁殖系数提供了一种可靠的途径.
From January to May 1995, the low temperature sensitive genic male sterile lines Pei’ai 64s and GD-2s were cultivated in glasshouse in Guangzhou. When the sterile line entered the sensitive period of fertility transformation, the greenhouse temperature was controlled to about 23 ℃ by daily temperature, and the pollen fertility and natural seed setting rate were checked. The results showed that the seed setting rate of Pei’ai 64s was 50.7% The average is 3.5g. The success of Pei’ai 64s original greenhouse in winter can provide a reliable way for accelerating the expansion of multiplication coefficient from generation to generation with the strict low temperature sensitive genic male sterile lines with few existing species and difficult breeding.