园艺学报2025，Vol.52Issue(12)：3180-3188,9.DOI:10.16420/j.issn.0513-353x.2024-0978
基于果实表型性状构建火龙果核心种质
Construction of Core Collection of Pitaya Based on Phenotypic Traits
摘要
Abstract
The 292 pitaya(Selenicereus spp.)accessions were used as materials.Based on 19 phenotypic traits,24 candidate core collections were constructed using 4 sampling methods and six sampling ratios.The optimal core collection construction strategy was determined based on four evaluation indicators:Ratio of Phenotype Retained(RPR),Range Conformity Rate(CR),Variation Coefficient Change Rate(VR),and Shannon-Weaver Diversity Index(I).Accessions with specific traits were then selectively added to the core collection,resulting in a final core collection of 50 pitaya accessions,which accounts for 17.12%of the original collection.The evaluation indicators,including CR,RPR,I,and VR,were 100.00%,99.44%,1.80,and 131.52%,respectively.Principal component analysis(PCA)showed that the core collection was evenly distributed in the sample distribution plot,covering the range of the original collection,and effectively reduced the overlapping portion of the original collection.Both the evaluation indicators and PCA results indicate that the core collection constructed in this study effectively preserved the genetic diversity of the original collection while removing redundancy.关键词
火龙果/核心种质/表型性状Key words
pitaya/core collection/phenotypic traits分类
农业科技引用本文复制引用
韦蒴曈,武志江,李祯英,黄凤珠,梁桂东,邓海燕,黄黎芳,叶小滢,陆贵锋..基于果实表型性状构建火龙果核心种质[J].园艺学报,2025,52(12):3180-3188,9.基金项目
广西重点研发计划项目(桂农科AB241484009) （桂农科AB241484009）
