三系杂交粳稻新不育系鄂粳A的选育与应用  

Breeding and Applying a Japonic Rice Cytoplasmic Male Sterility Line E-Jing A

作　　者：曾庆四[1] 游艾青[1] 祝师元 万丙良[1] 戚华雄[1] 殷德所 程航[1] 李珍连[1] 吴建平[1] 徐得泽[1] 刘良军[1] 陈雄[1] 

机构地区：[1]湖北省农业科学院粮食作物研究所/粮食作物种质资源创新与遗传改良湖北省重点实验室,武汉430064 [2]湖北省种子管理局,武汉430070

出　　处：《湖北农业科学》2014年第21期5069-5072,共4页Hubei Agricultural Sciences

基　　金：湖北省"十一五"科技攻关重大专项(2006AA201A03)

摘　　要：介绍了茶野型粳稻雄性不育系鄂粳A的选育过程、特征特性及恢保关系.鄂粳A不育性稳定,不育株率100％,不育度99.8％,花粉败育以典败为主,占98％以上,柱头外露率48.2％,异交结实率30％～50％,在武汉5月上旬至6月中旬播种,播始历期为78～90 d,属感温性粳稻类型,配合力较好,品质优良.The Chaling wild abortive type （CL-type） cytoplasmic male sterility line,E-Jing A,was characterized by stable sterility with sterile plant percentage of 100％,pollen sterility of 98％ with dominated typical abortive pollens,and showed the characteristics of good outcrossing with the exserted stigma rate of 48.2％ and outcrossing rate varied from 30％ to 50％,good combining ability,and fine grain quality.E-Jing A was sensitive to temperature.It＇s duration from seeding to heading was 78～90 days when it was sowed from the middle ten days of May to the first ten days of June at Wuhan.The breeding procedure of E-Jing A and its characteristics,relationship of restoring and maintaining were introduced.

关 键 词：茶野型 粳型不育系 鄂粳A 选育 

分 类 号：S511.203.51[农业科学—作物学]