基于果实表型的核桃种质资源遗传多样性分析

打开文本图片集

关键词核桃；种质资源；多样性中图分类号S722.5文献标识码A文章编号 0517-6611（2026）01-0100-05doi：10.3969/j.issn.0517-6611.2026.01. 019开放科学（资源服务）标识码（OSID）：

Genetic Diversity Analysis of Walnut Germplasm Resources Based on Fruit Phenotype

I Zhong-rui，SHGen-sheng，HAOHua-zhengetal（InstituteofCash Crops，Shanxi AgriculturalUniversity，Fenyang，Shani 132200）

AbstractObjectieTostudyepenotyicdiversityandariationchracteristsofwalutmplasmresouces，rovidingaatafoudationandtheoreticalbasisforteselectionofsuperiorwalutgermplasmandthebredingofnewvarietis.Method]Using199walutdividualtreeswithgoodyieldperfomancfromwalnutgardenofInstituteofCashrops，ShanxiAgriculturalUniverstyasstudybjects，5fruit phenotypictraiseeaedetofraidgtesiyfcraitealdndea cipalcompontusteaalyoductedesul]eantiaitraitsftwaltfruitsshoddfc，iio coefficients ranging from 7.31% to 25.89% ，and an average value of 17.59% . Correlation analysis on 15 phenotypic traits indicated there werecorreltionsamongtetraitsAverageutweightisteainparameteformeasuringsinglefruitweight，showingextreelysignifcant positivecorrsigfrsrtdvefrtt，iretsf.ds tively.Averageelightalsodntreelysigiantposiioelnithagutht;eelyieldpreesoed extremelysigcantgieoelaiosihavesellthisvagfresfruithtndaverutwghtPripalot analysis reduced 15 traits into 5 principal components，whose cumulative contribution rate reached 74.63% . Cluster analysis divided 199 walnutresourcesintosixbreedinggroupsfordiferentusesConclusion]Thefruitphenotypicritsof99igh-yeldwalutindivdualtrees showhighgneticdversityndthelatiosamongtheenotypictraieeativelyose.Onparticularlyecelentvarety“Y” was screed and can be utilized as parental material for improving large fruit type and heavy single fruit.

Key wordsWalnut;Germplasm resource;Diversity

核桃（JuglansregiaL.）是我国主要的经济林树种之一，栽培历史悠久，分布范围广泛，在国民经济中占有重要位置，特别是在我国广大农村的丘陵山区，是果农的主要经济生活来源[1]。（剩余4923字）