摘要
为比较不同银杏(Ginkgo biloba L.)单株种子品质的差异性,优选高品质或特异单株,为核用银杏选育和综合利用提供数据支撑,以35个单株的种子为试材,分析品质性状的株间差异及其关联性,并利用主成分与聚类分析进行综合评价。结果显示:(1)20个品质性状在株间差异显著,变异性大,且内在品质的变异性较外观性状大。(2)利用概率分级法,筛选出极高黄酮单株3株,极高萜内酯单株3株,极低银杏酸单株1株,可作为选育药食核用特异种质和杂交育种的亲本材料。(3)筛选了极显著相关的54对指标,显著相关的4对指标。(4)确定了银杏种子品质评价的重要因子(8个表型指标、3个重量指标及银杏酸含量);筛选出10个大果型-低银杏酸单株,具有定向培育、开发利用的潜质。
This study investigated inter-individual variation in seed quality among 35 Ginkgo biloba L.trees to identify superior genotypes for nut production and value-added utilization.Twenty seed traits were quantified and analyzed for variability,trait correlation,and comprehensive quality evaluation through principal component and cluster analyses.Results revealed substantial variation among individuals,with intrinsic quality variability greater than external morphological characteristics.Using a probability grading approach,three individuals with exceptionally high flavonoid content,three with extremely high terpene lactone content,and one with extremely low ginkgolicacid content were identified as potential parental materials for breeding specialized germplasm and hybrid lines for medicinal and edible use.Fifty-four pairs of indicators exhibited highly significant correlations between morphological and biochemical quality traits,while four pairs showed significant correlations.Eleven major indicators(including eight phenotypic traits,three weight-related traits,and ginkgolic acid concentration)were identified as key determinants of seed quality.Ten individuals were distinguished by large fruit size and low ginkgolic acid content,indicating strong potential for targeted breeding,genetic improvement,and industrial application of nut-bearing Ginkgo biloba.
作者
贾慧
魏温瑄
姜盼盼
郁万文
Jia Hui;Wei Wenxuan;Jiang Panpan;Yu Wanwen(Laboratory for Development and Utilization of Forest Food Resources,Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,China)
出处
《植物科学学报》
北大核心
2025年第6期770-780,共11页
Plant Science Journal
基金
国家重点研发计划项目(2024YFD2200305)。
关键词
银杏种子
品质
差异性
核用单株
Ginkgo biloba seed
Quality
Variability
Nut-use single plants
