辣椒种质资源果色多样性分析

Diversity Analysis of Fruit Colour in Pepper Germplasm Resources

为探究辣椒各器官颜色的连锁关系,对113份辣椒种质资源以各组织或器官颜色为主的18个植物学性状进行调查、聚类和相关性分析。相关性分析结果表明,辣椒的花冠颜色、花柱颜色及花丝颜色3个性状具有较高相关性,其中花柱颜色与花丝颜色呈极显著相关;辣椒子房颜色、幼果颜色、青熟果色和老熟果色4个性状无显著相关性。聚类分析结果表明,青熟期紫果色与果形、青熟期紫果色与花丝颜色、茎表皮茸毛数量与抗病性之间存在一定相关性。本研究阐明了113份辣椒种质18个植物学性状特别是青熟果色与老熟果色之间的相关性,可为后续辣椒青熟果色及老熟果色的遗传规律及果色控制基因定位研究垒实基础。

The paper aims to explore the linkage relationship of colour of pepper organs.18 botanical traits of 113 pepper cultivars were investigated and statistically analyzed.Correlation analysis showed that corolla colour,style colour and filament colour had high correlation,while ovary colour,young fruit colour,immature fruit colour and mature fruit colour had no significant correlation.Phylogenetic clustering analysis indicated that purple immature fruit colour was linked to fruit shape and filament colour,stem pubescence was linked to disease-resistance.In this study,we elucidated 18 botanical traits of 113 pepper germplasm,especially the correlation between immature fruit colour and mature fruit colour,which laid a solid foundation for the subsequent research on the genetic law of fruit colour and the gene mapping of fruit colour in pepper.