中南林业科技大学学报2026，Vol.46Issue(6)：25-33,55,10.DOI:10.14067/j.cnki.1673-923x.2026.06.003
中国北方不同种源文冠果种子表型性状差异性研究
Study on differences in seed phenotypic traits of Xanthoceras sorbifolium Bunge from different provenances in northern China
摘要
Abstract
[Objective]This study aimed to systematically analyze the phenotypic traits of Xanthoceras sorbifolium seeds from different provenances,to construct a scientific germplasm evaluation system,and to provide a theoretical basis for genetic improvement,germplasm innovation,and industrial development of Xanthoceras sorbifolium.[Method]Seeds from 12 provenances(including Gansu,Shanxi,Shandong,etc.)were used as experimental materials.Ten traits,including longitudinal diameter,transverse diameter,and single seed weight,were measured.Multivariate analyses,including one-way ANOVA,Pearson correlation analysis,cluster analysis,and principal component analysis(PCA),were combined to reveal differences in phenotypic traits,internal correlations,and comprehensive performance among provenances.[Result]Significant differences in seed phenotypic traits were observed among provenances(P＜0.05).Single seed weight showed coefficient of variation,while seed shape index exhibited the lowest.100-seed weight was significantly and positively correlated with transverse diameter,longitudinal diameter,kernel weight,and single seed weight(P＜0.05),whereas seed volume was significantly negatively correlated with kernel rate(P＜0.05).Cluster analysis divided the provenances into three groups:Group Ⅰ(provenances 2,3,9,11,12),termed the"small-seed low-weight type";Group Ⅱ(provenances 1,7,8,10),the"medium-seed medium-weight type";and Group Ⅲ(provenances 4,5,6),the"large-seed high-weight type".PCA indicated that the first three principal components explained 74.05%of the cumulative variance,with provenance 4 achieving the highest comprehensive score(164.89 points),demonstrating the most superior germplasm characteristics.[Conclusion]The established"morphological trait analysis—statistical model construction—germplasm classification"three-level evaluation system provides a new framework for scientific evaluation and genetic improvement of Xanthoceras sorbifolium germplasm.Due to its outstanding comprehensive performance,Provenance 4 is recommended as an excellent parental material for stress-resistant breeding.关键词
种源/文冠果/表型性状/表型变异Key words
provenance/Xanthoceras sorbifolium Bunge/phenotypic traits/phenotypic variation分类
农业科技引用本文复制引用
武龙庆,赵明,王艺林,赵玉红,郭彩霞..中国北方不同种源文冠果种子表型性状差异性研究[J].中南林业科技大学学报,2026,46(6):25-33,55,10.基金项目
甘肃省林草科技计划项目(2024kj105) （2024kj105）
2023 年中央林业草原改革发展资金项目(GSSH202308-001) （GSSH202308-001）
甘肃省科技计划项目(25JRRG044). （25JRRG044）
