Genetic diversity analysis and breeding application of 190 high inbred lines of Chinese cabbage
ZHANG Wenjing
FENG Jianqi
SU Henan
WANG Peiyun
MA Ji
DING Cong
WEI Xiaoc-hun
ZHANG Xiaowei
YUAN Yuxiang
Abstract：In order to analyze the major phenotypic traits and genetic diversity of 190 high-generation inbred lines derived from 26 parental lines,and evaluate their potential for breeding applications,this study conducted variation and correla-tion analysis on 27 major phenotypic traits of the test materials,along with genetic diversity analysis based on 27 pairs In-Del markers.The results showed that the variation coefficient of the 27 phenotypic traits ranged from 10.10％to 90.36％,indicating substantial variability,with significant correlations observed among multiple traits.The InDel marker analysis revealed that the polymorphism information content ranged from 0.01 to 0.37,and the genetic similarity coefficient among the 190 high-generation inbred lines varied between 0.57 and 1.00,with an average of 0.65,suggesting consider-able genetic variation within the population.Based on InDel markers and population structure analysis,the test materials could be divided into three subgroups,with the progeny derived from 16-Autumn introduced from eastern suburbs B and Kaishu No.7 exhibiting greater segregation.In conclusion,the 190 Chinese cabbage inbred lines used in this study exhib-it broad phenotypic variation and rich genetic diversity,providing valuable germplasm resources and theroetical support for parental selection and the development of superior trait combinations in Chinese cabbage breeding.
Keywords：Chinese cabbagePhenotypic traitGenetic diversityInDel marker
Publication Date：2025-08-05
Online Publishing Date：2025-09-01(First online date of this platform, not the publication date of the document)
Pages：11( 26-36 )