甘蓝型油菜隐性细胞核雄性不育系118A的发现与选育  

Discovery of Recessive GMS 118A and Its Breeding in Brassica napus

作　　者：陈大伦[1] 张瑞茂[1] 

机构地区：[1]贵州省油料科学研究所,思南565109

出　　处：《贵州农业科学》2006年第6期5-8,共4页Guizhou Agricultural Sciences

基　　金：贵州省"十一五"重大科技攻关项目"油菜资源创新和超级品种选育"[黔科合N2字(2005)3006]

摘　　要：1999年以在黄籽双低常规品系5862R中发现的核不育株与常规品种广泛杂交,个别特殊组合分离后代进行系内和系间测交、自交,通过4年6代成功育成了甘蓝型油菜隐性细胞核雄性不育纯合两型系118AB、临时保持系118C及其全不育系118CA。经遗传验证,该不育系为隐性核不育,且与117A、S45A不育基因不等位。除具备双低优质特性外,还具有恢复源广,易选配强优势组合;不育性彻底而稳定,不育率100%,使核不育杂交油菜制种变得更为简便易行,利于降低种子生产成本和提高制种产量。The recessive GMS 118A （including homozygous two-type line 118AB, temporary maintainer line 118C and complete sterile line 118CA） was bred from the sterile plant discovered in the combination of 5862R line × the conventional variety 118 by the test cross, self cross in lines and between lines after 4 years （6 generations）. The sterile gene of 118A is the non-allelic gene compared with the sterile genes of 117A and S45A. The 118A with the advantages of stable sterility, 100% of sterile rate, better double-low quality and wide restoring resources makes seed production of hybrid rapeseed simple and easy, which is benefit to lower the cost and improve seed quality.

关 键 词：甘蓝型油菜 隐性核不育 纯合两型系 临时保持系 杂合两型系 

分 类 号：S565.035.1[农业科学—作物学]