优质籼型三系不育系陕农1A的选育

Breeding of Fine Quality Indica CMS Line Shannong 1A in Rice

陕农1A是用稻瘟病抗性强的保持系8010B与香稻保持系宜香1B杂交,F1代作母本与高异交率保持系K17B杂交,系选后代与中9A测交并连续回交转育而成的优质籼型三系不育系。该不育系具有不育性稳定、农艺性状优良、可恢性好、配合力强、开花习性好、抗性较强、米质优等特点,2016年通过陕西省技术鉴定。

Shannong 1A, developed by testcrossing Zhong 9A to the blast-resistant plants selected from the filial generation of the multiple cross of 8010B （a maintainer line with strong blast resistance）/Yixiang 1B （an aromatic maintainer line）//K17B （a maintainer line with high outcrossing rate） and followed by successive backcrossing, is a fine quality indica CMS line. It is characteristic of stable male sterility, good agronomic traits, good restorability, high combining ability, good flowering habits, strong disease resistance and fine grain quality. It was technical ly identified in Shaanxi Province in 2016.