番茄主要株型参数主基因—多基因混合模型分析  

Major-gene plus Polygene Heritability Model Analysis of Main Plant-type Parameters on Tomato

作　　者：鲁博[1] 冯辉[1] 王五宏[1] 刘娜[1] 

机构地区：[1]沈阳农业大学园艺学院,沈阳110161

出　　处：《沈阳农业大学学报》2008年第3期351-353,共3页Journal of Shenyang Agricultural University

基　　金：国家"863"重大专项项目(2002AA207013)

摘　　要：选用叶片平展的173和叶片上冲的101番茄品系为亲本,获得P1、P2、F1、B1、B2和F2共6个世代材料。采用"主基因—多基因混合遗传模型"分析方法,分析叶片夹角和披垂值的遗传特性。结果表明:叶片夹角受一对加性主基因+加性—显性多基因控制,符合D-2模型;主基因的加性效应为8.45,表现为增效,遗传率在B1、B2和F2群体中分别为48.85%、29.7%和55.99%;多基因的加性效应为-3.12,显性效应为-0.94,均表现为减效,多基因遗传率在B1,B2和F2群体中遗传率为5%～30.6%。叶片披垂值受加性—显性—上位性多基因控制,符合C模型;多基因遗传率在B1,B2和F2群体中分别为57.6%、43.39%和72.19%。叶片夹角和披垂值均具有数量性状遗传特征,遗传率中等。Taken spreading-leaf tomato stains （173） and up-rush-leaf truss tomato stains （101） as parents, six generation materials （P1,P2,F1,B1,B2 and F2） were gained. The major gene and minor gene mixed inheritance model was used. The leaf angle and leaf reclinate value＇s heredity property were analyzed. The results showed that one additive major gene plus additive-dominance polygene inheritance model controlled the leaf angle inheritance of the combination, which was according to model D2. The additive effect of one major gene was 8.45, and behaving synergism effect. Heritability ratios of major gene were 48.85% ,29.7% and 55.99% in B1, B2 and F2 respectively. The additive effect of polygene was -3.12, the dominance of polygene was -0.94, all behaving insynergisim effect. The heritability ratios of polygene were from 5% to 30.6% in B1, B2 and F2 respectively. The leaf reclinate value was controlled by additive-dominance-epitasis polygene, according with model C. The heritability ratios of polygene were 57.6%, 43.39% and 72.19% respectively. The leaf angle and leaf reclinate value were all belong to quantitative trait, and heritability ratio were in the middle.

关 键 词：番茄(Lycopersicon ESCULENTUM Mill.) 株型 叶片夹角 披垂值 遗传 

分 类 号：S641.2[农业科学—蔬菜学] S603[农业科学—园艺学]