[1]刘春贵,杨帆,袁媛,等.基于表型性状的观赏荷花种质资源的遗传多样性[J].江苏农业学报,2026,42(04):798-807.[doi:doi:10.3969/j.issn.1000-4440.2026.04.016]
　LIU Chungui,YANG Fan,YUAN Yuan,et al.Genetic diversity of ornamental lotus germplasm resources based on phenotypic traits[J].,2026,42(04):798-807.[doi:doi:10.3969/j.issn.1000-4440.2026.04.016]
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基于表型性状的观赏荷花种质资源的遗传多样性()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
42
期数:
2026年04期
页码:
798-807
栏目:
园艺
出版日期:
2026-04-30

文章信息/Info

Title:
Genetic diversity of ornamental lotus germplasm resources based on phenotypic traits
作者:
刘春贵1; 杨帆2; 袁媛1; 孙春青3; 曹婧3; 谢陶4; 李风童1; 4
(1.江苏里下河地区农业科学研究所,江苏扬州225007；2.马来西亚博特拉大学热带农业与粮食安全研究所,雪兰莪州沙登43400；3.江苏丘陵地区镇江农业科学研究所,江苏镇江212400；4.扬州大学园艺园林学院,江苏扬州225009)
Author(s):
LIU Chungui1; YANG Fan2; YUAN Yuan1; SUN Chunqing3; CAO Jing3; XIE Tao4; LI Fengtong1; 4
(1.Institute of Agricultural Sciences of the Lixiahe District in Jiangsu Province, Yangzhou 225007, China;2.Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang 43400, Malaysia;3.Zhenjiang Institute of Agricultural Sciences in Jiangsu Hilly Areas, Zhenjiang 212400, China;4.College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China)
关键词:
观赏荷花; 种质资源; 表型性状; 遗传多样性
Keywords:
ornamental lotus; germplasm resources; phenotypic traits; genetic diversity
分类号:
S682.32
DOI:
doi:10.3969/j.issn.1000-4440.2026.04.016
文献标志码:
A
摘要:
观赏荷花资源丰富,但育种过程中存在亲本背景不清、效率低等瓶颈。本研究对238份观赏荷花种质资源的10个数量性状和11个质量性状进行遗传多样性和生物统计学分析,结果表明,质量性状的遗传多样性指数为7.708～7.858,数量性状的遗传多样性指数为7.560～7.881,数量性状遗传多样性指数均值高于质量性状；花被片数变异系数最大(64.82%),且遗传多样性指数最低(7.560),叶长、叶宽、叶高等叶部相关性状变异系数较小；相关性分析结果显示,叶部相关性状之间以及生殖器官相关性状之间分别存在显著或极显著正相关(P＜0.05、P＜0.01),花被片数相对独立；通过主成分分析提取了5个主成分,累积贡献率达到61.799%,可以将21个表型性状降维至长势、花发育状态、株型发育状态、叶柄被刺和花色等5个主成分；聚类分析将所有资源分为6类,每一类群内的种质资源分别具有相似的表型特征,不同类群的种质资源为杂交育种提供了特异性亲本。本研究结果揭示了观赏荷花丰富的表型性状遗传多样性,为骨干亲本筛选和突破性品种创制提供了基础。
Abstract:
Abundant ornamental lotus germplasm resources exist, yet breeding faces bottlenecks such as unclear genetic background of parental materials and low efficiency. This study conducted genetic diversity and biostatistical analyses on 10 quantitative and 11 qualitative traits across 238 ornamental lotus germplasm resources. The results indicated that Shannon-Wiener diversity index ranged from 7.708 to 7.858 for qualitative traits and 7.560 to 7.881 for quantitative traits. The mean Shannon-Wiener diversity index for quantitative traits was higher than that for qualitative traits. The number of tepals exhibited the highest coefficient of variation (64.82%) and the lowest Shannon-Wiener diversity index (7.560), while most leaf-related traits (e.g., leaf length, leaf width, and leaf height) showed limited variation. The correlation analysis revealed significant positive correlations among leaf-related traits or reproductive organ-related traits, while the number of tepals remained relatively independent. The first five principal components, extracted via principal component analysis and explaining 61.799% of the cumulative variance, effectively reduced the 21 phenotypic traits into five dimensions representing: growth vigor, flower status, plant architecture, petiole spine density, and flower color. Cluster analysis grouped all resources into six distinct clusters, each sharing similar phenotypic characteristics. These clusters provided specific parental candidates for cross-breeding. This research unveils the rich phenotypic genetic diversity within ornamental lotus germplasm, offering a foundation for screening elite parents and creating breakthrough cultivars.

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备注/Memo

备注/Memo:
收稿日期：2025-07-06基金项目：江苏省农业科技创新与推广补助项目[扬农(2025)28号]作者简介：刘春贵(1970-),男，江苏高邮人,硕士,副研究员,主要从事观赏植物种质资源与育种研究。(E-mail)2426663129@qq.com通讯作者：李风童,(E-mail)lftchina@163.com
更新日期/Last Update: 2026-05-11