植物遗传资源学报2025，Vol.26Issue(2)：284-295,12.DOI:10.13430/j.cnki.jpgr.20240417002
郁金香花器官表型性状多样性分析
Diversity Analysis of Floral Organ Phenotypic Traits in Tulipa gesneriana L.
摘要
Abstract
To explore the diversity of floral organ phenotypic traits in tulip germplasm resources,a study was conducted on 60 tulip cultivars,assessing nine district floral organ phenotypic traits.The genetic diversity of these traits was evaluated by principal component analysis and cluster analysis,providing a reference for the evaluation,identification and utilization of tulip germplasm resources.The results revealed significant variation in five quantitative traits(petal diameter,petal cross diameter,stigma length,stigma circumference,and stigma diameter)and four quality traits(corolla main color,pollen color,stigma shape,and flowering period).The variation coefficients of corolla longitudinal diameter and corolla transverse diameter were 19.35％and 23.41％,respectively,indicating a relatively large variation between cultivars with a high degree of dispersion.However,the variation in stigma length,stigma circumference,and stigma diameter was relatively small,with a concentrated distribution and lower degree of dispersion.92％of the tested varieties have a triangular prism shaped stigma,while five cultivars showed variation in stigma shape.The proportions of early,middle,and late flowering cultivars are 20％,68％,and 12％,respectively.Principal component analysis extracted a total of five principal components with a cumulative contribution rate of 85.179％.By establishing a comprehensive evaluation model for the phenotypic traits of tulips,12 cultivars with a comprehensive score above 0.5 were identified.'Candy Prince'and'Foxy Foxtrot'stood out with higher scores,being middle-flowered cultivars characterized by long and thick stigmas and excellent overall floral organ traits.Cluster analysis categorized the 60 tulip cultivars into four groups.Group Ⅰ comprised of 51 cultivars,primarily large and colorful tulip varieties with thick stigmas and superior overall performance.Group Ⅱ included only one variety'Purple Dream',characterized by slender corolla and thick and long stigma.Group Ⅲ consisted of 6 cultivars,characterized by short stigma and general performance of floral organ traits.Group Ⅳ included 2 varieties,notable for their stigma shape variation.These results can support the classification of tulip cultivars and the exploration of their phylogenetic relationships from the morphological perspective.This study provides a reference for further development of excellent floral organ ornamental traits,germplasm innovation,and variety improvement in tulips.关键词
郁金香/种质资源/花器官/表型多样性/综合评价Key words
Tulipa gesneriana L./germplasm resource/floral organ/phenotypic diversity/comprehensive evaluation引用本文复制引用
戚梅丽,么玉龙,秦斗文,巨秀婷..郁金香花器官表型性状多样性分析[J].植物遗传资源学报,2025,26(2):284-295,12.基金项目
中国科学院"西部之光"项目([2022]4号) （[2022]4号）
青海省"昆仑英才"科技领军人才培养项目([2022]1号) （[2022]1号）
青海大学农牧学院大学生科研训练项目(NKX202301)"Light in the West"Projects of the Chinese Academy of Sciences([2022]No.4) （NKX202301）
Qinghai Province"Kunlun Talent"Science and Technology Leading Talent Training Projects([2022]No.1) （[2022]No.1）
Student Research Training Program at the College of Agriculture and Animal Husbandry,Qinghai University(NKX202301) （NKX202301）
