摘要
[目的]为更好地在生产上利用新育成反向核不育水稻FHS。[方法]利用低能氮离子束为诱变源对籼型品系99-02进行诱变处理,在其后代中筛选到育性特殊的突变材料FHS,该研究对其开花习、柱头外露率等特征特性进行观察。[结果]反向核不育水稻FHS在10:00～10:30有明显的开花高峰期,第2个开花高峰期为中午12:00;反向核不育水稻FHS单株开花期为8月12～25日,单穗开花为8月5～10日,与培矮64S相比,其开花较早、花时集中,有利于种子繁殖;FHS柱头外露率为85.8%,外露率较低,有利于繁殖制种纯度。[结论]反向核不育水稻FHS有较好的使用价值,且可以用作光温敏核不育水稻育性转换机理研究的对比材料。
[ Objective] The experiment aimed to use reverse genie sterile rice FHS better in practical production. [ Method] The low energy nitrogen ion beam was taken as a mutation source to conduct mutagenie treatment for hsien rice 99-02 and the mutation FHS with special fertility was isolated from their offspring. The some characteristics such as flowering habit and stigma exsertion rate of FHS were observed in this experiment. [ Result] The reverse genie sterile rice FHS had a obvious peak flowering stage from 10：00 to 10：30 ,while the second peak flower- ing stage was at 12：00. The single plant flowering of reverse genic sterile rice FHS was from August 12 to August 25 and the single panicle flowering was from August 5 to August 10. Compared with PA64S, FHS flowered early and flowering time was concentrated, so it was good for seed propagation. The stigma exsertion rate of FHS was 85.8% and low exsertion rate was good for the purity of seed. [ Conclusion] The reverse genic sterile rice FHS had good value in use, besides, it also could be used as comparison material for studying fertility ahemation mechanism of photoperiod sensitive genic male sterile rice.
出处
《安徽农业科学》
CAS
北大核心
2009年第24期11459-11460,共2页
Journal of Anhui Agricultural Sciences
关键词
水稻
不育
开花习性
柱头外露率
Rice
Genic sterile
Flowering habit
Stigma exsertion rate
