南方农业学报2024，Vol.55Issue(6)：1724-1732,9.DOI:10.3969/j.issn.2095-1191.2024.06.017
不同种源掌叶木种实性状及发芽能力差异
Differences of fruit-seed traits and germination capacity of Handeliodendron bodinieri from different provenances
摘要
Abstract
[Objective]To understand the differences of fruit-seed traits and germination capacity of Handeliodendron bodinieri from different provenances,to excavate wild high-quality germplasm resources of H.bodinieri,and to provide reference for carrying out selection of superior provenances.[Method]The fruits/seeds of H.bodinieri from five provenan-ces in Tianlin,Leye,Fengshan and Huanjiang in Guangxi and Dushan in Guizhou were used as test materials.Seventeen traits and seed germination indicators were measured,including morphological size,moisture content,1000-grain weight and germination percentage.The relationship between fruit-seed traits,germination capacity of H.bodinieri and pro-venances,geographical and climatic factors were revealed by correlation and cluster analysis,and a comprehensive evalua-tion was conducted.[Result]The differences of fruit-seed traits and germination capacity among the five provenances were extremely significant(P＜0.01,the same below),with the largest coefficient of seed shape(1.44)for the Leye pro-venance and the highest moisture content(43.90％)for Fengshan provenance.The coefficients of variation of the 17 mea-sured traits ranged from 5.02％to 103.72％,with the largest coefficient of variation in germination vigor and the smallest coefficient of variation in the average germination speed.The results of correlation analysis showed that germination per-centage was significantly positively correlated with coefficient of seed shape and moisture content in seed(P＜0.05,the same below),and germination index had extremely significantly positive correlation with moisture content in seed,indi-cating that the larger coefficient of seed shape,the narrower and longer the seeds,and the higher the moisture content in seed,the better the germination capacity.Fruit-seed traits and germination capacity had no significant correlation with latitude and longitude(P＞0.05),but were positively and negatively correlated with altitude and annual mean precipita-tion,respectively.The results of principal component analysis showed that top four principal components reached cumu-lative variance contribution rate of 87.110％.The results of cluster analysis showed that Tianlin,Huanjiang,Leye and Du-shan provenances with longer length and diameter of seed but lower germination percentage were classified into one group,while Fengshan provenance with shorter length and diameter of seed but higher germination percentage was a sepa-rate group.Among the tested provenances,Leye provenance had the highest comprehensive score,followed by Tianlin provenance.[Conclusion]The phenotypic fruit-seed traits and germination capacity of H.bodinieri differ greatly from each other,and there are some correlations among the traits.The fruit-seed traits and germination characteristics of H.bodinieri are synergistically selected by altitude and annual mean precipitation,with random variation characteristics.The comprehensive evaluation shows that the Leye provenance has the best performance in fruit-seed traits and germination ca-pacity,and can be bred by a potential fine provenance.关键词
掌叶木/种质资源/种实性状/种子发芽能力/种源差异Key words
Handeliodendron bodinieri/germplasm resources/fruit-seed traits/seed germination characteristics/differences of provenance分类
农业科技引用本文复制引用
郭新,郭松,邓雅诗,马朝阳,王安伟,于亚晴,张秀华,李在留..不同种源掌叶木种实性状及发芽能力差异[J].南方农业学报,2024,55(6):1724-1732,9.基金项目
National Natural Science Foundation of China(31560200) （31560200）
Guangxi Forestry Science and Tech-nology Promotion Demonstration Project(Guilinkezi[2022]24) 国家自然科学基金项目(31560200) （Guilinkezi[2022]24）
广西林业科技推广示范项目(桂林科字[2022]第24号) （桂林科字[2022]第24号）
