白菜型油菜粒色性状的遗传分析

Genetic Analyses of Seed-coat Color Character in Brassica campestris

本试验以青海大黄,青油241、153、134、黄籽沙逊、Agrevo-x为亲本材料,配制成5个杂交组合的各6个世代群体,即P1、P2、F1、F2、B1、B2,研究了粒色性状的遗传特点。结果表明:种皮是母体组织一珠被发育而来,受母体基因型控制;粒色的黄与褐是受1对等位基因控制的相对性状,褐色为显性性状,黄色为隐性性状,青海大黄油菜为隐性纯合体;不同的白菜型油菜黄粒油菜的粒色基因有所不同,有些是由等位基因控制的,有些是由非等位基因控制的。

Five hybrid combinations were made with Qinghai dahuang, Qingyou241,153,134, Yellow Sarson and Agrevo -x as parents material. Their six generations F1 , F2 , backcross B1 and B2 and their parents P1 and P2 were used to study the inherence of seed-coat color character. The results were followings ： seed-coat was female organ and controlled by female genotype;The yellow charactor was opposite to brown character and both of them were controlled by one allele. Brown was dominant character and yellow was recessive character. Qinghai Dahuang was a recessive homozygote. Different Brassica campestris had different seed-coat color genotypes. Some were controlled by allele while other were controlled by no-allele.