辣椒花器性状与果实性状的遗传相关及因子分析

为掌握1 a生辣椒花器性状和果实性状的变化特点及其相互关系,对1 a生辣椒4个变种29份材料的8个花器性状和4个果实性状进行了遗传相关分析.结果表明:花器性状和果实性状具有较高的遗传多态性,其变异系数(CV)范围为13.10%(花纵径)～86.81%(单果重);遗传力在30.81%(果纵径)～88.73%(子房横径);8个花器性状与4个果实性状之间存在较为紧密的相关关系.因子分析表明:12个花器及果实性状集约于3个主因子上,F_1为横茎/重量因子,F_2为纵径因子,F_3为形态指数因子,这3个主因子对变异的累计贡献率达84.83%,保持了12个性状的绝大部分信息.

Genetic Analysis of Floral Traits and Fruit Traits in Pepper(Capsicum annuum L.)

To realize the variations of the pepper floral traits,fruit traits and their relationship,genetic analysis and correlation analysis of 12 traits were conducted in 29 accessions from 4 varieties in Capsicum annuum L..The results showed that the 12 traits had high genetic diversity among the 4 varieties,and the coefficient of variation(CV)of 12 phenotypic traits ranged from 13.10%(flower length)to 86.80%(fruit weight.).and heritability ranged from 30.81%(fruit length)to 88.73%(ovary diameter).The 8 floral traits had close correlation with 4 fruit traits.Factor analysis indicated that 12 traits of the accessions might be simplifted to 3 independent trait groups controlled by 3 main factors.Factor 1 was a diameter/weight factor;Factor 2 was considered to control the length of flower and fruit;Factor 3 was a shape index factor.The accumulative contribution rate of the 3 major factors to total variation accounted for 84.83%,maintaining most of information of 12 traits.