【摘要】 为了探索地中海仙客来叶纹遗传及选育优良新品种,对6个不同叶纹的类型进行了自交测定,根据其子代分离情况,对其叶纹基因组成进行了研究。结果表明:B型、M型自交后代,100%均为B型及M型,F型、H型、X型、L型则出现性状分离,其分离规律说明地中海仙客来叶纹性状受微效多基因控制,每一位点由一对等位基因RL或RB占据,其中RL基因使叶片表现型为绿色,RB使叶片表现型为银白色。当某一位点的基因型为RLRL时,叶片表现为深绿色;基因型为RLRB,叶片表现为绿色;基因型为RBRB,叶片表现为银白色,各位点的集合图案则形成了不同类型的叶纹。叶纹变异的基因控制模式是未来选育地中海仙客来优良新品种的基础。更多还原

【Abstract】 In order to explore the leaf veins heredity and breed excellent varieties of Cyclamen hederifolium,the selfing lines measurement of six different types are carried out, and the genetic constitution of leaf veins isstudied according of the offspring separation condition. The results showed that, B or M type selfinggenerations were 100% B or M types, and F, H, X, L types had properties separation. The separation lawshowed that leaf veins of C.hederifolium were controlled by tiny effect polygene, and each site consisted of apair alleles RLor RB, among them RLgene made phenotype for the green leaf, RBgene led to leaf phenotype forsilvery white. If a locus of genotype consisted of RLRL, blade performance was dark green; genotype was RLRB,leaf appeared to be green; genotype was RBRB, blade showed silvery white; the collection pattern by all locuswere formed the different kinds of leaf veins. The gene control mode about leaf veins variation is the foundationfor breeding fine varieties of C.hederifolium in the future.更多还原