番茄早熟性及QTL定位的研究  

Tomato early maturity genetic research and QTL analysis

作　　者：李景富[1] 彭艳[1] 许向阳[1] 姜景彬[1] 秦国峰[1,2] 张贺[1] 

机构地区：[1]东北农业大学园艺学院,哈尔滨150030 [2]黑龙江东方学院人文社会科学学部,哈尔滨150066

出　　处：《东北农业大学学报》2015年第6期1-8,共8页Journal of Northeast Agricultural University

基　　金：现代农业技术体系专项(CARS-25);国家科技支撑计划项目(2013GB2B200136)

摘　　要：试验选用晚熟番茄13592和早熟番茄13493杂交后代F2代进行早熟性相关性分析,运用SSR和AFLP构建遗传连锁图谱,进行QTL分析,为选育早熟、高产、品质高的番茄新品种奠定基础。结果表明,成熟期与始花期、开花至成熟天数呈极显著正相关,与始花节位、早期产量、早期结果数、平均单果重呈正相关。利用数量性状基因完备区间作图法(ICIM)进行QTL分析,共检测出23个QTLs,其中有6个QTLs控制始花期,7个QTLs控制始花节位,控制开花至成熟天数和早期结果数各3个QTLs,控制平均单果重QTLs检测出2个,控制成熟期和早期产量QTL各1个。In this experiment, F2 population which was developed from an intraspecific cross between late maturity tomato 13592 and early maturity tomato 13493 was used to analyze the correlation of earliness traits. A molecular linkage map of the cross was constructed by SSR and AFLP, which was used for the QTL mapping. These were the foundation of breeding new early maturity, high yield, high quality varieties. The results showed that the days of maturity were significantly positively correlated with the days of first flowering and the days from flowering to maturity, and was positively correlated with the first flowering node, the early yields, the fruit number of early stage and the average weight of single fruit. A total of 23 QTLs were detected for the correlation of earliness traits by inclusive composite interval mapping （ICIM）, including six QTLs for the days of first flowering, seven QTLs for the first flowering node, three QTLs for the days from flowering to maturity and the fruit number of early stage, two QTLs for the average weight of single fruit, and one QTL for the maturity stage and the early yield, respectively.

关 键 词：番茄 早熟性 相关性分析 QTL分析 

分 类 号：S641.2[农业科学—蔬菜学]