甘蓝型黄籽油菜种子皮壳率的遗传研究  

A STUDY ON THE INHERITANCE OF SEED HUSK CONTENT IN YELLOW-SEEDED RAPE (BRASSICA NAPUS L.)

作　　者：段有德[1] 李加纳[1] 

机构地区：[1]西南农业大学农学与生命科学学院,重庆400716

出　　处：《西南农业大学学报（自然科学版）》2004年第2期180-184,共5页Journal of Southwest Agricultural University

基　　金：国家"863"计划课题(2002AA24207009)(2001AA241103);重庆市种子创新工程(2001-6050)资助项目

摘　　要：应用植物数量性状遗传体系的主-多基因混合遗传模型对甘蓝型黄籽油菜(GH06)与甘蓝型黑籽油菜(A800)杂交组合(GH06×A800)的P1,F1,P2,B1,B2和F26个世代群体种子皮壳率进行了多世代联合分析,结果表明:该组合种子皮壳率受1对加性主基因+加性-显性多基因控制遗传。主基因的加性效应为-1.0483,多基因加性效应为-1.2001,显性效应不明显,为-0.0580,表明主基因和多基因的加性效应对种子皮壳率性状的表现起主要作用。该杂交组合的B1,B2和F2群体种子皮壳率主基因遗传率分别为32.34%,44.77%和66.64%,多基因遗传率分别为46.82%,47.76%和22.54%,表明该组合种子皮壳率主要是由1对主基因+多基因相互配合控制遗传的,环境对种子皮壳率有一定的影响,但影响较小。选择种皮颜色纯黄的种子有望得到低皮壳率的甘蓝型黄籽油菜。Inheritance of seed husk content in the cross GH 06 (yellow-seeded Brassica napus L.) × A 800 (black-seeded B. napus L.) was studied by applying the major plus poly-gene model of quantitative traits through a joint analysis of its P_1, F_1, P_2, B_1, B_2 and F_2 generations. The results showed that husk content in this cross was controlled by one major gene with additive effects plus polygenes with additive dominance effects (Model D-2). The additive effects were –1.0483 in the major gene and –1.2001 in the polygenes, but the dominance effects of the polygenes were not obvious, which were only –0.0580. The additive effects of both the major gene and the polygenes seemed to play a major role in the performance of seed husk content. Heritability of husk content in B_1, B_2 and F_2 was estimated to be 32.34%, 44.77% and 66.64% for the major genes and 46.82%, 47.76% and 22.54% for the polygenes. It is, therefore, concluded that it will be easier to obtain yellow-seeded Brassica napus with low husk content by selection for seeds with pure yellow seedcoat.

关 键 词：甘蓝型黄籽油菜 皮壳率 主基因+多基因 遗传 

分 类 号：S565.401[农业科学—作物学]