山东农业科学2023，Vol.55Issue(11)：57-64,8.DOI:10.14083/j.issn.1001-4942.2023.11.009
基于主要农艺性状的25份凉粉草种质资源遗传多样性分析与综合评价
Genetic Diversity Analysis and Comprehensive Evaluation of 25 Mesona chinensis Germplasm Resources Based on Main Agronomic Characters
摘要
Abstract
In order to clarify genetic variation of Mesona chinensis agronomic traits and select excellent germplasms,25 M.chinensis germplasm materials collected from different regions were used for the experi-ment,and 12 agronomic traits were investigated and measured.The genetic variation analysis,correlation a-nalysis,principal component analysis and cluster analysis were used for genetic diversity analysis and compre-hensive evaluation.The results showed that the agronomic traits were significantly different between different M.chinensis germplasms with the variation coefficient from 7.33%to 50.90%;among them,the variation coef-ficient of branch length was the largest,followed by yield per plant.These germplasm materials had rich genet-ic diversity.The Shannon-Wiener diversity index(H′)ranged from 1.219 to 2.111,and that of leaf length and branch length were higher.Correlation analysis results showed that the yield per plant was positively correlated with the number of branches,branch length,leaf length and leaf weight ratio,so they could be used as the main indexes for evaluating the germplasm resources of M.chinensis.Four principal components were extracted by principal component analysis,and their cumulative contribution rate reached 75.081%,which could reflect most information of the agronomic traits of M.chinensis.The germplasms V18,V16 and V22 obtained higher score after comprehensive evaluation,so they were excellent suitable for selection of M.chinensis parents.Through cluster analysis,the 25 M.chinensis germplasms could be divided into three groups;among which,the general performance of type Ⅲ germplasms(V24 and V25)was the best,while that of type Ⅱ germ-plasms(V1,V2 and V3)was the worst,and that of the other germplasms(type Ⅰ)was in between.These results would provide references for the development of M.chinensis germplasm resources and breeding of new varieties.关键词
凉粉草/种质资源/农艺性状/遗传多样性/综合评价Key words
Mesona chinensis/Germplasm resources/Agronomic traits/Genetic diversity/Comprehen-sive evaluation分类
农业科技引用本文复制引用
兰秀,阮丽霞,马仙花,杨海霞,李恒锐,梁振华,黄小娟,张秀芬,周春衡..基于主要农艺性状的25份凉粉草种质资源遗传多样性分析与综合评价[J].山东农业科学,2023,55(11):57-64,8.基金项目
广西自然科学青年基金项目(2020GXNSFBA297054) （2020GXNSFBA297054）
崇左市科技计划项目(崇科 20220622) （崇科 20220622）
广西农业科学院稳定资助科研团队项目(桂农科2021YT158) （桂农科2021YT158）
