粳稻恢复系条纹叶病抗性的定向改良  

Improvement of Rice Stripe Disease Resistance for Restorer Lines of Japonica Hybrid Rice by Molecular Marker-assistant Selection

作　　者：姚姝[1] 张亚东[1] 朱镇[1] 陈涛[1] 赵庆勇[1] 周丽慧[1] 赵凌[1] 李余生[1] 王才林[1] 

机构地区：[1]江苏省农业科学院粮食作物研究所/国家水稻改良中心南京分中心/江苏省优质水稻工程技术研究中心,江苏南京210014

出　　处：《杂交水稻》2010年第S1期264-267,共4页Hybrid Rice

基　　金：国家高技术研究发展计划("863"计划)项目(2010AA101302);转基因生物新品种培育重点项目(2009ZX08001-19B);国家科技支撑计划项目(2006BAD01A01-7);江苏省科技支撑计划项目(BE2009303-1)

摘　　要：在对20个粳稻恢复系进行条纹叶枯病抗性鉴定的基础上,选择感水稻条纹叶枯病的优良粳稻恢复系宁恢8号为母本,与抗条纹叶枯病的日本粳稻品种关东194杂交,以宁恢8号为轮回亲本进行回交,利用与条纹叶枯病抗性基因Stv-bi共分离的SCAR标记对回交后代进行辅助选择,将Stv-bi转育到优良恢复系宁恢8号中,培育抗条纹叶枯病的粳稻新恢复系。According to the results of the identification of rice stripe disease resistance for 20 japonica restorer lines in the field conditions,Ninghui 8,a good japonica restorer susceptible to rice stripe disease,was selected and crossed to Kanto 194,a japonica rice variety from Japan and resistant to rice stripe disease,and then backcrossed successively to Ninghui 8.The molecular marker-assistant selection(MAS) for the rice stripe resistance was carried out in the backcross population by using the SCAR marker co-segregated with the rice stripe disease gene Stv-bi.As a result,Stv-bi was transferred into the good japonica restorer Ninghui 8,and a new japonica restorer line resistant to the rice stripe disease was successfully developed.

关 键 词：杂交粳稻 恢复系 条纹叶枯病抗性 分子标记辅助育种 

分 类 号：S511.22[农业科学—作物学]