西瓜果实番茄红素含量的遗传分析  

Genetic analysis of lycopene content in watermelon fruit

作　　者：路绪强[1] 高磊[1] 赵胜杰[1] 何楠[1] 刘文革[1] 

机构地区：[1]中国农业科学院郑州果树研究所,郑州450009

出　　处：《中国瓜菜》2016年第12期6-9,共4页China Cucurbits And Vegetables

基　　金：国家西甜瓜产业技术体系(CARS-26-03);中国农业科学院科技创新工程专项经费项目(CAAS-ASTIP-2016-ZFRI);‘十二五’国家科技支撑计划项目(2012BAD02B00);国家自然科学基金项目(31171979)

摘　　要：以高番茄红素含量的自交系‘花贝雷’(P_1)和低番茄红素含量的自交系‘13-3-3’(P_2)为亲本材料,构建了包括P_1、P_2、B_1、B_2、F_1及F_2的6个世代群体,采用数量性状主基因+多基因混合遗传的六世代联合分析法,对西瓜果实番茄红素含量的遗传规律进行研究。结果表明,番茄红素含量的遗传符合"一对加性—显性主基因+加性—显性—上位性多基因"模型,其中主基因的加性效应为6.43,显性效应为-4.00,主基因在B_1、B_2和F_2世代的遗传率分别为21.76%、3.99%、27.28%;多基因的遗传率分别为77.65%、94.64%、72.09%。研究结果将为西瓜果实高番茄红素优异基因的挖掘和优质新品种选育提供理论依据。Six generations of P1, P2, F1, B1, B2, and F2 derived from a crossing between parent ＇ Hua beilei ＇ with higher lycopene content and ＇ 13-3-3＇ with lower lycopene content were used to study the hereditary effects of lycopene content in watermelon fruit by the mixed major gene plus polygene inheritance model with joint analysis method of multiple generations. The results showed that the genetic model of lycopene content was ＂ one pair of additive-dominant major gene plus additive-dominant-epistasis polygene＂. The additive effect and dominant effect of the major gene was 6.43,-d.00,respectively. Heritability of the major gene in B~, B2, F2 population was 21.76%, 3.99%, 27.28%, and heritability of the polygene was 77.65%, 94.64%, 72.09%, respectively. These results laid an important theoretical basis for excavation excellent genes and varieties development.

关 键 词：西瓜 番茄红素 遗传分析 

分 类 号：S651[农业科学—果树学]