40份辣椒種質資源表型性狀的遺傳多樣性分析

打開文本圖片集

中圖分類號：S641.3 文獻標志碼：A 文章編號：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.）原產(chǎn)于中南美洲熱帶及亞熱帶地區(qū)，現(xiàn)已遍布世界多個國家，大約在16世紀后期傳入中國，在中國經(jīng)過了400多年的發(fā)展，已成為中國餐桌上重要的蔬菜之一。（剩余7987字）