水稻光温敏核不育系N418S的选育

Breeding of photoperiod-and thermo-sensitive genic male sterile line N418S in rice

N418S是以N5088S/鄂晚14经系谱法选育的粳型光温敏核不育系为母本与自育籼型恢复系中间材料J798杂交选育而成的优质水稻(Oryza sativa L.)光温敏核不育系。该不育系不育起点温度低,不育系稳定,在武汉市自然条件下稳定不育期为36 d,育性转换明显,易繁殖制种,米质优,配合力好,2019年8月通过湖北省农作物品种审定委员会的技术鉴定。

N418S,derived from the cross between japonica photoperiod-and thermo-sensitive genic male sterile(PTGMS)line selected by N5088S/Ewan14 and the self-bred indica rice intermediate material J798,is a new PTGMS line with a low critical temperature and stable male sterility. Under natural conditions in Wuhan city N418S has a stable sterile period of about 36 days. It has also good grain quality,high combining ability and is easy to conduct its multiplication and hybrid seed production. In August 2019,it was technically identified by the Crop Variety Certification Committee of Hubei province.