40份辣椒种质资源表型性状的遗传多样性分析
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中图分类号：S641.3 文献标志码：A 文章编号：1673-2871（2025）08-067-10
Genetic diversity analysis of phenotypic traits in 40 Capsicum annuum L. germplasmresources
WANG Tongtong'， GUO Zhiwei'，REN Guangqian'， SUN Qiang'，LIU Hejuan'， ZHANG Bei'， CHENG Xiangjie'， JIN Zhengya²，RENFusen'， ZHEN Junqi'，WU Tao1，LI Yi³
（1.Xinxiangdulcinnan;ianicuualolo ServiceCeegi;eUtythto
Abstract：To enhance theutilizationof thecollected Capsicum annuumL.germplasmresources and improve breeding efficiency，geneticdiversityanalysis，clusteranalsis，correlationanalysis，andprincipalcomponentanalysiswrecaed out n this study with23 phenotypic traits of40 stable inbredlines.Theresultsshowed thatthe diversity indices of the 23 phenotypictraitsvariedfromOto1.997，ofwhichthehighestdiversityindex wasplant width，andthecoeficientofariation of single fruit mass was the largest among the quantitative traits （ 52.92% ，which indicated that thephenotypic traits of the 40C⋅ annumL.germplasmresources had rich genetic diversity.Theresults ofcluster analysis showed that the 40 C.anmum L.germplasmresources could cluster into two taxa at geneticdistance 20，andthe germplasmresources of taxonIwere mostlycompactplants，with elongatedandthin-skinned fruitsandrelativelylarge fruit shapeindex，which could provide the theoretical basis forthe breeding practiceofthe subsequent diferentfruit shapesand plant shapes.The resultsofcorrelationanalysis showed thatthecorelationcoefficientsof74pairs oftraits weresignificantorextremely significant，indicating that mostofthephenotypictraits interacted witheach other.Theresults ofthe principalcompoent analysis showed that the cumulative contribution rate of the first six principal components was as high as 77.493% ，which couldreflectthe basiccharacteristicsofthephenotypic traits，the twelvephenotypic traitsas fruit transverse diameter， fruit shapeindex，andfruitcro-sectionshapecouldbeusedasimportantindexesforevaluatingthegeneticdiversityof C. annuum L.'s phenotypes and genetic improvement of C annuum L. variety. This study provides an important theoretical reference basis for the utilization and innovation of C annuumL.germplasm resources and variety selection. Key words： Capsicum annuumL.; Germplasm resource; Phenotypic trait; Genetic diversity
辣椒（CapsicumannuumL.）原产于中南美洲热带及亚热带地区，现已遍布世界多个国家，大约在16世纪后期传入中国，在中国经过了400多年的发展，已成为中国餐桌上重要的蔬菜之一。（剩余7987字）
