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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (9): 11-15.doi: 10.11924/j.issn.1000-6850.2012-1900

• 农学 农业基础科学 • 上一篇    下一篇

‘培矮64S’ 在长沙、 海口、 南昌三地的育性差异分析

宁金花 张艳贵 宋忠华   

  • 收稿日期:2012-05-18 修回日期:2012-07-25 出版日期:2013-03-25 发布日期:2013-03-25
  • 基金资助:
    中国气象局 2010年小型业务项目 “超级杂交稻制种、 栽培关键气象技术及业务服务平台研究”。

Fertility Differences Analysis of Hybrid Rice‘Pei’ ai64S’ in Changsha, Haikou and Nanchang

  • Received:2012-05-18 Revised:2012-07-25 Online:2013-03-25 Published:2013-03-25

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摘要： 为了分析同一的超级杂交稻在不同气候区域的育性表现，以不育系‘培矮64S’为材料，研究其在海南、湖南、江西3个气候区域的育性表现。结果表明，同一不育系在不同的气候区域其敏感期存在很大差异，‘培矮64S’在湖南长沙敏感期在开花前的0~8天之内，既第Ⅶ期和Ⅷ期；在海南海口的敏感期处在开花前的13~19天之内。既第Ⅲ期和Ⅳ期；在江西南昌的敏感期处在开花前的15~20天之内，既第Ⅲ期和Ⅳ期。自然条件下，不育系‘培矮64S’在长沙，从2010年7月17日至10月7日不育度都在>98.0%以上，其他时段波动很大；在海口，从2010年5月11日至10月18日不育度均>99.5%，自交结实率均< 0.5%，偶有波动；在南昌，从2010年7月12日至10月11日不育度都在>97.0%以上，自交结实在0.00%~ 0.85%之间波动。由此可见，在海南海口制种最安全，而且育性稳定时间最长，长达5个月。

关键词: 土壤动物, 土壤动物

Abstract: In order to analyze the fertility expression of one kind of super hybrid rice, we selected the photo-/ thermo-sensitive genetic male lines‘Pei’ai 64S’, three different climatic regions were Hainan, Hunan and Jiangxi. The results showed that, the same CMS in different climatic regions there was a big difference in their sensitive period,‘Pei’ai 64S’in Changsha the sensitive periods in the 0-8 days before flowering, ieⅦ,Ⅷperiod. In Haikou theⅢ,Ⅳperiods were the sensitive period; In Jiangxi, theⅢ,Ⅳperiods were the sensitive period. Under natural conditions, CMS 64S in Changsha in 2010 from July 17 to October 7, pollen sterility almost all of > 98.0%, other time fluctuate large. In Haikou, from May 11 to October 18 in 2010. The pollen sterility were greater than 99.50% from 11 May to 18 October, seed-setting rates all less than 0.50% . In Nanchang in 2010 from July 12 to October 11, pollen sterility almost all of > 97.0% , seed-setting rates fluctuate between from 0.00% to 0.85%. Thus, the seed in Haikou, the most secure, and stable sterility longest, as long as five months.