Identification and comprehensive evaluation of resistance to bolting in fast-growing Chinese cabbage germplasm resource
ZHANG Shuxia
YANG Xiaoyun
SI Chaoguang
ZHANG Qingxia
SONG Yongjun
Abstract：Taking 98 fast-growing Chinese cabbage germplasm as research objects,7 main characteristic traits related to bolting and flowering were selected as the evaluation indicators for bolting tolerance.Correlation analysis,principal com-ponent analysis,and membership function analysis were conducted to comprehensively evaluate the bolting tolerance of fast-growing Chinese cabbage germplasm.The results showed that the highest coefficient of variation was the bud stage,while the lowest coefficient of variation was the flowering stage.The correlation analysis showed that there was a highly significant positive correlation between the budding stage and the flowering stage,indicating that observing both the bud-ding and flowering stages could determine the resistance of the tested materials to bolting,which was simple and reliable.There was a highly significant positive correlation between the height of flowering period and the height difference of flowering period,indicating that the size of flowering period could indicate the bolting speed of the material.Principal component analysis converted 7 indicators into 2 principal component factors,with a cumulative contribution rate of 79.325 2％.The 98 germplasm resources were divided into 3 types using the membership function method,and 11 germ-plasm resources were screened for their resistance to bolting.
Keywords：Fast-growing Chinese cabbageGermplsm resourceBoltingEvaluation
Publication Date：2025-07-05
Online Publishing Date：2025-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 54-61 )