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温室冬繁水稻低温敏核不育系原种方法的初步研究
张旭,黄农荣,林道宣,刘彦卓,孔清霓,刘鸿先,王以柔,李美茹,李平,曾韶西
作者单位
张旭,黄农荣,林道宣,刘彦卓,孔清霓,刘鸿先,王以柔,李美茹,李平,曾韶西  
摘要:  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.
关键词:  水稻  低温敏核不育系  温室冬繁
DOI:10.3969/j.issn.1005-3395.1996.3.008
分类号:
基金项目:
PRELIMINARY STUDY ON MULTIPLICATION OF PEDIGREE SEEDS FOR TGMS LINES OF RICE AT LOW CRITICAL TEMPERATURE IN GREENHOUSE IN WINTER
Zhang Xu,Huang Nongrong,Lin Daoxuan,Liu Yanzhuo,Kong Oingni,Liu Hongxian,Wang Yirou,Li Meiru ,Li Ping,Zeng Shaoxi
Abstract:  Two thermoperiod-sensitive genie male sterile(TGMS) lines of rice, Pei-ai 64s and GD-2s, were grown in greenhouse for multiplication by means of heating from January to May, 1995. When the TGMS lines were in the sensitivity stage of fertility alteration, the mean daily temperature in the greenhouse was controlled at 23 ℃. After heading, their pollen fertility was monitored by dricroscope and the seed setting rates were checked. The results showed that the seed setting rate of Pei-ai 64s reached 50.7%, its individual plant yield was averagely 3.5g. The multiplication of pedigree seeds for Pei-al 64s grown in the greenhouse in winter was successful. It is proved that seed being multiplied in the greenhouse in the winter is a better way to expedite the reproduction of TGMS lines at low critical temperature.
Key words:  Rice  Thermoperiod-sensitive genie male sterile lines  Multiplication

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