辣椒成熟果实中辣椒红素含量的QTL定位  

QTL Analysis of Capsanthin Content in Pepper(Capsicum annuum L.) Mature Fruit

作　　者：张芳芳[1] 张正海[1] 毛胜利[1] 王立浩[1] 胡鸿[1] 张宝玺[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《中国蔬菜》2010年第20期14-18,共5页China Vegetables

基　　金：国家"863"项目(2006AA10Z1A6;2006AA100108);国家科技支撑项目(2006BAD13B06);农业部园艺作物遗传改良重点开放实验室项目

摘　　要：以83-58×Perennial构建的包括138个单株的重组自交系(RIL)群体为作图群体,利用142个SSR标记、24个CAPS标记以及果实辣味、果柄着生方向(pun和up)2个形态标记构建遗传连锁图谱并进行了辣椒成熟果实中辣椒红素的QTL定位。生理成熟期(花后70d)辣椒果实的辣椒红素含量测定值作为QTL定位时的表型数据,利用复合区间作图法共检测到3个QTL位点,分别位于辣椒的第2、10、12条染色体上,分别解释了表型变异的7.6%、8.2%、6.5%。A RIL population consisted of 138 individual lines was constructed from the across between 83-58 and Perennial. 168 polymorphic markers including 142 SSR, 24 CAPS and 2 morphological markers（pun and up）were used to construct a linkage map of pepper（Capsicum annuum L.）. Capsanthin content of each line was evaluated when the fruit get into physiological maturity stage （70 days after flowering）, which were used to do QTL analysis. 3 QTLs related to capsanthin content were detected on P2, P10, P12 chromosomes, using MQM mapping method, accounting 7.6 %, 8.2 %, 6.5 % of the phenotypic variance respectively.

关 键 词：辣椒红素 QTL 辣椒 重组自交系 

分 类 号：S641.3[农业科学—蔬菜学]