中国农业科学 ›› 2026, Vol. 59 ›› Issue (11): 2468-2483.doi: 10.3864/j.issn.0578-1752.2026.11.012

• 园艺 • 上一篇    下一篇

364份樱桃番茄种质资源表型性状的遗传多样性分析及综合评价

张悦青1(), 张玉亭1, 薛晨飞1, 韩秦宇1, 贺一容1, 徐紫娟1, 范秀梅1, 王军娥1, 罗丹1, 冯雪2, 孙胜1()   

  1. 1 山西农业大学园艺学院/山西省蔬菜花卉种质资源创新与利用重点实验室, 山西太谷 030801
    2 山西农业大学植物保护学院, 山西太谷 030801
  • 收稿日期:2026-01-06 接受日期:2026-03-07 出版日期:2026-06-01 发布日期:2026-06-03
  • 通信作者:
    孙胜,E-mail:
  • 联系方式: 张悦青,E-mail:zhangyueqing2023@163.com。
  • 基金资助:
    山西省现代农业产业技术体系建设项目(2026CYJSTX08); 晋中国家农高区水果番茄智慧标准化技术研究教授博士工作站(JZNGQBSGZZ004); 山西省重点研发计划(202102140601015); 吕梁市重点研发项目(2025NY11)

Genetic Diversity Analysis and Comprehensive Evaluation of Phenotypic Traits in 364 Cherry Tomato Germplasm Resources

ZHANG YueQing1(), ZHANG YuTing1, XUE ChenFei1, HAN QinYu1, HE YiRong1, XU ZiJuan1, FAN XiuMei1, WANG JunE1, LUO Dan1, FENG Xue2, SUN Sheng1()   

  1. 1 College of Horticulture, Shanxi Agricultural University/Shanxi Key Laboratory of Germplasm Resources Innovation and Utilization of Vegetable and Flower, Taigu 030801, Shanxi
    2 College of Plant Protection, Shanxi Agricultural University, Taigu 030801, Shanxi
  • Received:2026-01-06 Accepted:2026-03-07 Published:2026-06-01 Online:2026-06-03

摘要:

【目的】分析樱桃番茄种质资源表型性状的遗传多样性,并进行综合评价,筛选出一些优异的樱桃番茄种质材料,以期为樱桃番茄核心种质筛选、利用和品种选育提供依据。【方法】以364份国内外樱桃番茄种质资源为试验材料,对其41个表型性状进行测定;并运用遗传多样性指数、相关性分析、主成分分析、系统聚类和隶属函数法等多元统计分析手段,进行樱桃番茄种质表型的遗传多样性分析、聚类划分与综合评价。【结果】364份樱桃番茄种质资源表型性状变异系数变化范围为9.82%—45.18%,变异系数最大的为单果重;遗传多样性指数的变化范围为0.14—2.17。相关性分析结果表明,数量性状间存在显著或极显著的相关关系。主成分分析提取13个主成分的累积贡献率达70.525%,代表樱桃番茄种质的大部分性状信息,确定了23个关键性状指标。根据系统聚类结果将供试材料划分为8个类群。第Ⅰ类群共29份材料,适于作为高产育种的亲本。第Ⅱ类群包含25份材料,可作为鲜食品种加以利用。第Ⅲ类群仅含1份材料T12,特征表现独特。第Ⅳ类群有27份材料,适宜用于培育商品性状优良、耐贮运的品种。第Ⅴ类群共75份材料,是改善果实风味及选育高糖度品种的关键资源。第Ⅵ类群包含49份材料,属于糖酸比高、口感较好类型,在鲜食风味改良方面具有重要价值。第Ⅶ类群共150份材料,数量最多,表现出显著的早熟育种潜力。第Ⅷ类群仅含8份材料,其果形特殊,既可作为特色鲜食品种开发,也可用于加工制酱。利用权重和隶属函数进行综合评价,筛选表型性状综合排名前29的樱桃番茄种质。【结论】364份樱桃番茄种质资源具有广泛的表型变异与遗传多样性,被划分为8个类群,筛选出23个关键评价指标,并通过隶属函数法筛选出29份综合性状优良的种质材料。

关键词: 樱桃番茄, 种质资源, 表型性状, 遗传多样性, 综合评价

Abstract:

【Objective】To analyze the genetic diversity of phenotypic traits in cherry tomato germplasm resources, conduct a comprehensive evaluation, and screen for superior cherry tomato materials. This aims to provide a basis for the selection, utilization, and breeding of core cherry tomato germplasm. 【Method】This study utilized 364 cherry tomato germplasm resources from domestic and international sources as experimental materials, measuring 41 phenotypic traits. Employing multivariate statistical analysis methods including genetic diversity indices, correlation analysis, principal component analysis, systematic clustering, and membership function analysis, the research conducted genetic diversity analysis, cluster classification, and comprehensive evaluation of cherry tomato germplasm phenotypes.【Result】The coefficient of variation (CV) for 364 cherry tomato phenotypic traits ranged from 9.72% to 45.18%, with the highest CV observed for single fruit weight. Genetic diversity indices ranged from 0.14 to 2.17. The results of the correlation analysis indicate that significant or highly significant correlations exist between quantitative traits. Principal component analysis extracted 13 principal components with a cumulative contribution rate of 70.525%, representing most trait information of cherry tomato germplasm. Through cluster analysis, the test materials were classified into eight categories. Based on the systematic clustering results, the test materials were divided into eight groups. GroupⅠ comprises 29 materials suitable as parental lines for high-yield breeding. GroupⅡ includes 25 materials that can be utilized as fresh-market varieties. GroupⅢ contains only one material, T12, exhibiting unique characteristics. GroupⅣ, comprising 27 materials, is suitable for developing varieties with excellent commercial traits and storage/transport tolerance. GroupⅤ, with 75 materials, serves as a key resource for improving fruit flavor and breeding high-sugar varieties. GroupⅥ, containing 49 materials, exhibits a high sugar-to-acid ratio and favorable taste profile, holding significant value for fresh-eating flavor enhancement. GroupⅦ comprises 150 materials, the largest group, demonstrating significant potential for early-maturing breeding. GroupⅧ contains only 8 materials with distinctive fruit shapes, suitable for developing specialty fresh-eating varieties or for processing into sauces. Comprehensive evaluation using weighted membership functions selected the top 29 cherry tomato germplasm materials based on overall phenotypic performance, identifying 23 key trait indicators. 【Conclusion】The 364 cherry tomato germplasm resources showed extensive phenotypic variation and genetic diversity. They were classified into eight groups by cluster analysis, with 23 key indicators identified via principal component analysis, and 29 germplasm materials with superior comprehensive traits selected through membership function analysis.

Key words: cherry tomato, germplasm resources, phenotypic traits, genetic diversity, comprehensive evaluation