浙江农业学报2025，Vol.37Issue(6)：1233-1243,11.DOI:10.3969/j.issn.1004-1524.20240717
姜种质资源遗传多样性分析与核心种质资源库的构建
Genetic diversity analysis and core collection construction of ginger(Zingiber officinale Rosc.)germplasm accessions
摘要
Abstract
To explore the genetic relationships of different ginger(Zingiber officinale Rose.)germplasm accessions in Zhejiang Province to enhance their conservation,utilization,and provide foundational materials for breeding pro-grams,the genetic diversity of 30 phenotypic traits for 80 ginger germplasm accessions were analyzed by correlation analysis,principal component analysis(PCA)and cluster analysis.Moreover,the core collection was constructed.The results showed that the genetic diversity index of 15 qualitative traits ranged from 0 to 0.85,with leaf color ex-hibiting the highest diversity.For 15 quantitative traits,the coefficient of variation(CV)ranged from 7.84％to 44.56％,with branch number showing the highest CV.Correlation analysis revealed that rhizome weight per plant showed highly significant positive correlation(P＜0.01)with plant height,plant width,leaf length,leaf width,number of leaves on main stem,aboveground stem height,aboveground stem diameter,sub-rhizome length,and node number of sub-rhizomes,indicating that germplasm accessions with strong growth had higher yield.PC A extrac-ted six principal components with a cumulative contribution rate of 62.423％.Cluster analysis classified the 80 ac-cessions into six groups,with Groups Ⅱ and Ⅲ exhibiting taller plants,vigorous growth,and higher yields.A core collection comprising 36 superior accessions(45％of the total)was established through systematic stepwise cluste-ring and priority sampling strategies.t-test confirmed that this core collection effectively represents the genetic varia-tion of the original germplasms.关键词
姜/遗传多样性/表型性状/核心种质Key words
ginger/genetic diversity/phenotypic trait/core collection分类
农业科技引用本文复制引用
洪霞,卢基来,漆慧娟,陈孝赏..姜种质资源遗传多样性分析与核心种质资源库的构建[J].浙江农业学报,2025,37(6):1233-1243,11.基金项目
台州市科技计划项目(21nya11) （21nya11）
浙江省"三农九方"科技协作计划项目(2024SNJF015) （2024SNJF015）
浙江省第三次全国农作物种质资源普查与收集行动(111821301354052030) （111821301354052030）
