结球甘蓝抽薹开花时间性状的QTL定位及分析  

QTL Mapping and Analysis on Bolting and Flowering Time in Cabbage

作　　者：朱洪运[1] 田多成[1] 颉建明[2] 简元才[1] 康俊根[1] 

机构地区：[1]北京市农林科学院蔬菜研究中心,农业部华北地区园艺作物生物学与种质创制重点实验室,北京100097 [2]甘肃农业大学农学院,甘肃兰州730070

出　　处：《华北农学报》2013年第5期1-5,共5页Acta Agriculturae Boreali-Sinica

基　　金："十二五"国家科技支撑计划项目(2012BAD02B01;2012BAD50G01);国家"863"项目(2012AA1001);北京市科委项目(D121100003412001)

摘　　要：在已构建的结球甘蓝AFLP、SSR和SRAP标记高密度遗传图谱的基础上,运用MapQTL 4.0软件对结球甘蓝F2群体抽薹、开花时间两性状分别进行QTL定位和分析。最终检测到2个控制甘蓝抽薹时间性状的QTL(qbt-3-2、qbt-9-1),以及一个同开花时间性状相关的QTL(qft-9-1),分别位于连锁群LG3与LG9上,这3个QTL均为增效位点,共解释甘蓝抽薹、开花时间性状变异的17.5%,22.7%;同时得到与QTLs共分离的2个分子标记E46M52-5、me26-em13-1,均可作为辅助选育甘蓝耐抽薹品种的标记使用,这将为结球甘蓝耐抽薹品种的选育提供理论依据。Based on the Cabbage genetic linkage map which had been constructed previously , QTL mapping and analysis related to bolting and flowering time in the individuals of F 2 were conducted using MapQTL 4.0.Two QTL（qbt-3-2,qbt-9-1）located on LG3 and LG9 controlling the traits of bolting time and one QTL（qft-9-1）located on LG9 controlling the traits of flowering time in cabbage were detected .The three QTLs are all the sites of additive effect,17.5%,22.7%of variation that can be explained respectively .Meanwhile,two molecular markers（E46M52-5,me26-em13-1）corresponding with the QTLs could be used for M-AS of breeding for bolting tolerance .It will pro-vide the basis of theoretical for the resistant bolting varieties breeding .

关 键 词：结球甘蓝 抽薹及开花时间 数量性状位点 

分 类 号：S635.03[农业科学—蔬菜学]