植物遗传资源学报2026，Vol.27Issue(9)：1746-1757,12.DOI:10.13430/j.cnki.jpgr.20260317002
76个海棠新品种花器官表型多样性分析
Phenotypic Diversity Analysis of Floral Organs in 76 New Malus Cultivars
摘要
Abstract
Investigating the diversity of floral organ phenotypic traits in ornamental crabapple cultivars provides theoretical support for targeted breeding,germplasm evaluation,and landscape applications.Seventy-six new crabapple cultivars were studied.Six quantitative floral traits and 14 qualitative floral traits were measured,followed by diversity analysis,correlation analysis,cluster analysis,principal component analysis,and comprehensive evaluation.The Shannon-Wiener diversity indices of six quantitative traits were between 1.04 and 2.05.A total of 65 variation types were detected across the 14 qualitative traits,with diversity indices ranging from 0.75 to 1.92.Small bud color,large bud color,and outer petal color exhibited higher diversity indices,indicating rich genetic diversity.Correlation analysis revealed high coefficients between quantitative traits,with flowering duration showing a highly significant positive correlation with petal number(r=0.74).Q-type clustering divided the tested crabapples into four major groups:Group Ⅰ is suitable for breeding single-petaled,light-colored varieties with strong resistance;Group Ⅱ is suitable for breeding varieties with large,double flowers and a long blooming period;Group Ⅲ is suitable for breeding varieties with vivid flower colors;and Group Ⅳ is suitable for breeding varieties with a high number of pistils and strong productivity.Principal component analysis transformed 20 floral traits into seven principal components,cumulatively explaining 78.13％of variance and capturing the most characteristic information of floral phenotype traits in ornamental crabapple cultivars.Comprehensive evaluation identified 10 key breeding and ornamental materials with outstanding overall traits,including Malus'Yi Honglian',M.'Zhuangyuan Hong',M.'Zi Die'er',M.'Chang Hong'.This study provides valuable references for the efficient development and utilization of crabapple resources and for breeding ornamental floral traits.关键词
观赏海棠/花/表型性状/综合评价/遗传多样性Key words
ornamental crabapple/flower/phenotypic traits/comprehensive evaluation/genetic diversity引用本文复制引用
刘雨欣,马敬泽,黄芷珺,薛澄波,张往祥,范俊俊..76个海棠新品种花器官表型多样性分析[J].植物遗传资源学报,2026,27(9):1746-1757,12.基金项目
江苏省观赏海棠品种创新与应用长期科研基地项目(LYKJ[2024]03) （LYKJ[2024]03）
江苏省研究生科研创新计划项目(kycx25_1359) （kycx25_1359）
国家自然科学基金(32201622) （32201622）
国家留学基金委项目(202508680003)Project of the Long-Term Scientific Research Base for Innovation and Application of Ornamental Crabapple Varieties of Jiangsu Province(LYKJ[2024]03) （202508680003）
Postgraduate Research & Practice Innovation Program of Jiangsu Province(kycx25_1359) （kycx25_1359）
National Natural Science Foundation of China(32201622) （32201622）
China Scholarship Council Program(202508680003) （202508680003）
