江西红山茶组种质资源遗传多样性

Phenotypic genetic diversity of Sect. Camellia germplasm resources in Jiangxi Province

表型性状遗传多样性是植物遗传多样性的重要组成部分,研究植物表型性状遗传多样性对于开展植物遗传资源的保护与利用具有重要意义。本文对红山茶组12个物种的6个质量性状、5个数量性状以及茶果3个品质性状进行分析,结果显示各质量性状重要程度是果实质量性状〉叶片质量性状;各数量性状变异程度较大,具有较高的遗传多样性,多样性指数1.43~1.91,其中3个果实经济性状（仁含油率、油酸含量、亚油酸含量）的多样性值占数量性状多样性总值的37.12%。聚类分析结果表明物种聚类与原种地理分布存在关联。

Phenotypic traits genetic diversity is an important part of plant genetic diversity. There is great significance to study phenotypic traits genetic diversity of plant for conservation and utilization of plant genetic resources. In this paper, 6quality traits, 5 quantity traits and 3 fruit quality traits of 12 species of Sect. Camellia were analyzed. Results showed that the fruit quality traits were more important than the leaf quality trait. The variation of quantitative trait is larger, and the diversity index was varied from 1.43 to 1.91, which indicated high genetic diversity, Among which, the value of diversity index for three fruit trait（seeds oil content, oleic acid content and linoleic acid content） accounted for 37.12% of the total value of the diversity of quantitative traits. Cluster analysis results showed that the species clustering was related to the species distribution.