23份地稍瓜种质资源形态性状遗传多样性分析

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中图分类号：S642.9 文献标志码：A 文章编号：1673-2871（2025）11-119-08

Abstract：Asurveywasconductedon16morphological indicatorsof23accesionsofCynanchum thesioides（Freyn）K. Schum.，andgeneticdiversityorrelation，prncipalcomponent，andclusteranalyses wereperformedtoexplorethegetic diversityofmorphological traits，providinga theoretical basis forthe genetic breedingof C thesioides.Theresultsindicate that the genetic diversityof morphological traits among the23resources isrelativelyrich，withadiversityindexranging from1.48 to1.98，averaging1.75，andacoefficient of variationbetween 5.71% and 60.63% ，averaging 17.67% ，among them，thecoeficientof variationofthenumberofflower，thenumberoffruit，thefruitsetingrate，thethousand-grain massof seedsand seed width areall greater than 15% ，which canbeused asevaluation indicatorsforthepreliminary selection and breeding of the germplasm resources of C thesioides.Correlationanalysis indicatesthatthereare 31 pairs oftraitsshowingextremelysignificant positiveornegativecorrelations.Principalcomponentanalysis indicates thatthe first five principal components can reflect 82.685% of the information，with three resources having a comprehensive score ofabove three，cluster analysiscan categorize the23 accessions of C thesioides into three groups.Insummary，thereis rich morphological variation in C thesioides resources，and theresearch results can providea basis for furthergenetic improvement and breeding.

Key words：Cynanchum thesioides（Freyn）K.Schum.; Germplasmresource;Morphological trait; Genetic diversity

地梢瓜[Cynanchumthesioides（Freyn）K.Schum.]是萝蘑科鹅绒藤属的多年生直立半灌木，别名地梢花、女菁、蒿瓜、地瓜瓢、蒿瓜子等，常生长于山坡、沙丘、荒地及田边等地[-4]。（剩余8149字）