4种光温敏核不育水稻在南昌的育性表现

摘要

[目的]考查自然条件下4种不育系水稻在南昌的育性情况.[方法]2010年通过分期播种的方法分别对4个不同类型的实用光温敏核不育系准S、Y58S、P88S和培矮64S的育性转换特性进行系统研究.[结果]准S的敏感期为开花前9～10d,58S的敏感期为开花前11～13 d,培矮64S的敏感期为开花前16～19 d,P88S没有明显的敏感期.从育性转换临界温度来看,准S最低,为27.2℃；培矮64S次之,为27.5℃；58S转换温度最高,为29.3℃.[结论]在南昌地区,培矮64S的育性波动较小,稳定期较长,较其他几个不育系好.%[ Objective ] The study aimed to investigate the fertility status of 4 kinds of genic male sterile rice in Nanchang area. [ Method ] The fertility conversion characteristic for 4 kinds of practical photo-thermo-sensitive genie male-sterile lines including Zhun S, Y58S, P88S and Peiai 64S with different types were conducted for the systematic study resp. Through the sowing method by stages. [ Result ] The sensitive period of Zhun S was 9 - 10 d before the flowering,that of 588 was 11 - 13 d before the flowering, that of Peiai 64S was 16 - 19 d before the flowering and P88S had no obvious sensitivity period. As for the critical temperature of the fertility conversion, Zhun S was lowest, being 27.2 ℃, Peiai 64S was the next, being 27.5 ℃, 58S was highest, being 29.3℃. [ Conclusion ] In Nanchang area, Peiai 64S showed the smaller fertility fluctuation and longer stable period, so it was better than other genie male sterile lines.