浙江省不结球白菜种质资源表型多样性分析  

Phenotypic Diversity Analysis of Non-heading Chinese Cabbage Germplasm Resources in Zhejiang Province

作　　者：胡海娇[1] 汪精磊 胡天华[1] 王五宏[1] 魏庆镇 包崇来[1] Hu Haijiao;Wang Jinglei;Hu Tianhua;Wang Wuhong;Wei Qingzhen;Bao Chonglai(Institute of Vegetables,Zhejiang Academy of Agricultural Sciences,Hangzhou,310021)

机构地区：[1]浙江省农业科学院蔬菜研究所,杭州310021

出　　处：《分子植物育种》2020年第18期6187-6196,共10页Molecular Plant Breeding

基　　金：浙江省第三次全国农作物种质资源普查与收集行动(111821301354052030);浙江省科技计划项目-基于创意农业的园艺型农作物品种研发与示范(2018C02057);浙江省农业(蔬菜)新品种选育重大科技专项-青菜新品种选育(2016C-02051-6-3)共同资助。

摘　　要：本研究以浙江省"第三次全国农作物种质资源普查与收集行动"中收集的48份不结球白菜种质资源为材料进行田间表型鉴定,并分析了材料遗传多样性。研究结果表明10个数量性状变异系数范围为23.33%~50.29%,遗传多样性指数在1.26~2.01之间;9个质量性状变异系数范围为14.57%~65.77%,遗传多样性指数在0.29~1.61之间。各性状间存在较高相关性,株高、株幅、叶长、叶柄长4个性状两两之间均呈极显著正相关,莲座叶数与其他性状均呈负相关。前5个主成分累计贡献率达76.587%,包含了大部分信息。通过系统聚类,将参试材料共分成5类,第Ⅰ类为乌塌菜,第Ⅱ类主要为长梗白菜,第Ⅲ类主要为青梗菜,第Ⅳ类为奶白菜,第Ⅴ类为混杂类群。本研究为浙江省不结球白菜种质资源的高效利用和品种改良提供理论基础。In this study,48 non-heading Chinese cabbage germplasms collected in the Third National Survey and Collection Action on Crop Germplasm Resources in Zhejiang Province were used as materials for phenotypic identification and genetic diversity analysis.The results showed that the variation coefficient of 10 quantitative characters ranged from 23.33%to 50.29%,and the genetic diversity index ranged from 1.26 to 2.01.And the variation coefficients of 9 quality traits ranged from 14.57%to 65.77%,and the genetic diversity index ranged from 0.29 to1.61.There was a high correlation between different characters,and a significant positive correlation between plant height,plant width,leaf length and petiole length,besides,the number of lotus leaves was negatively correlated with other characters.The cumulative contribution rate of first 5 principal components is 76.587%,which contains most of the information.The tested materials were classified into 5 groups by cluster analysis.The first group is Wuta-tsai,the second group is mainly erect-type leafy cabbage,the third group is Pak-choi,the fourth group is mainly milk Chinese cabbage and the fifth group is a hybrid group.This study provides theoretical basis for efficient utilization and breeding of non-heading Chinese cabbage germplasm resources in Zhejiang Province.

关 键 词：不结球白菜 种质资源 表型多样性 相关性分析 主成分分析 

分 类 号：S634.3[农业科学—蔬菜学]