西北林学院学报2026，Vol.41Issue(3)：3-15,13.DOI:10.3969/j.issn.1001-7461.2026.03.01
文冠果杂交组合苗期遗传分析与家系评价
Genetic Analysis and Family Evaluation of Hybrid Combinations at the Seedling Stage in Xanthoceras sorbifolium
摘要
Abstract
This study aimed to analyze the genetic variation of seedling growth traits and drought-related physiological indices in full-sib families of Xanthoceras sorbifolium,explore the genetic control patterns of different traits,and provide a theoretical basis for parental selection and early family screening in arid and semi-arid regions.Thirty full-sib families of Xanthoceras sorbifolium were used as experimental materials,and a seedling trial was conducted at the Weihe Experimental Station in Zhouzhi County,Shaanxi Province.The growth of two-year-old seedlings was measured,and the contents of superoxide dismutase(SOD),per-oxidase(POD),catalase(CAT),malondialdehyde(MDA),and proline(PRO)were determined after more than 30 days of natural drought stress.One-way analysis of variance(ANOVA)was conducted to test the differences among families.Combining ability analysis and genetic parameter estimation were used to ana-lyze genetic effects,and principal component analysis(PCA)was applied to comprehensively evaluate the families.Results shows:significant differences(P<0.05)were observed among hybrid combinations in both growth traits and drought-related physiological indices.The coefficients of variation of most traits ex-ceeded 20%,with SOD activity and diameter reaching 36.89%and 34.22%,respectively,indicating abun-dant genetic variation.The broad-sense heritability of all traits was greater than 80%,suggesting strong potential for selection.Combining ability analysis showed that male parents D1,D3,and D7 and female par-ents'Zhongshi 4'and'Zhongshi 9'exhibited relatively high general combining ability for most traits.Some combinations,such as 1-03,9-07,and 4-04,showed higher specific combining ability effects across multiple traits.Genetic parameter analysis indicated that the relative contributions of additive and non-additive genetic effects varied among traits,while most drought-related physiological traits were mainly controlled by non-additive effects.Three principal components were extracted by PCA,with a cumulative contribution rate of 74.583%,effectively integrating multi-trait information for comprehensive family eval-uation.'Zhongshi 4'and'Zhongshi 9'were preliminarily identified as superior candidate female parents,while D1,D3,and D7 were identified as promising male parents.Eight families,including 1-03,4-04,4-03,and 9-07 showed superior comprehensive performance at the seedling stage.关键词
文冠果/杂交组合/配合力/家系评价Key words
Xanthoceras sorbifolium/hybrid combinations/combining ability/family evaluation分类
农业科技引用本文复制引用
董玲仙,娄蓝,杨莹莹,王利兵,贾小明..文冠果杂交组合苗期遗传分析与家系评价[J].西北林学院学报,2026,41(3):3-15,13.基金项目
国家重点研发计划子课题"文冠果优质种质创制与优质高产良种选育"(2022YFD220040206) （2022YFD220040206）
人才科研资助-木本油料种质创新(Z1013024001). （Z1013024001）
