水稻光温敏核不育系安农286S的选育

Breeding of Indica TGMS Line Annong 286S in Rice

为改良当前生产上骨干亲本系,选育出配合力高、优质、抗逆性强、繁殖产量高等综合性状优良的新不育系,以“深08S”“广占63S”和“华占”为材料,通过杂交并借助分子标记辅助选择手段,对稻瘟病抗性、米质、配合力和育性等性状进行了选择,育成了籼型水稻光温敏核不育系安农286S。结果显示,安农286S除了具有理想的株叶形态以外,还具有适当的播始历期、较好的开花习性及异交结实性等特点;田间自然温光特性鉴定和人工温光特性鉴定结果表明,安农286S的不育性稳定,不育时期较长;稻瘟病抗性鉴定结果,安农286S高抗稻瘟病;此外安农286S稻米品质优,配合力强,繁殖产量较高。

In order to improve the character of founder parent so as to breed a new sterile lines with excellent comprehensive properties,we took Shen08S,Guangzhan 63S and Huazhan as the reasearch materials,bred indica rice photo-and thermo-sensitive genic male sterile line(PTGMS)Annong 286S through hybridization and selection of marker-assistant as well as of blast-resistance,rice quality,combining ability and sterility properties.The results showed that in addition to the ideal plant and leaf morphology,Annong 286S also had the characteristics of appropriate sowing-heading period,good flowering habit and outcrossing fertility.The results of natural and artificial temperature-light characterization showed that the sterility of Annong 286S was stable and the sterility period was long enough.Identification result of disease resistance showed that Annong 286S had high blast resistance;in addition,its rice quality was good with strong combining ability and high reproduction yield.