LAI Wei,ZHU Shouliang,LIU Chongzheng,et al.Genetic Diversity Analysis of Phenotypic Traits in 78 Guizhou Chili Pepper (Capsicum annuum L.) Germplasm Resources[J].Northern Horticulture,2026,(17):1-9.[doi:10.11937/bfyy.20260782]
七十八份贵州朝天椒种质资源表型性状的遗传多样性分析
- Title:
- Genetic Diversity Analysis of Phenotypic Traits in 78 Guizhou Chili Pepper (Capsicum annuum L.) Germplasm Resources
- 文章编号:
- 1001-0009(2026)17-0001-09
- 分类号:
- S641.3
- 文献标志码:
- A
- 摘要:
- 以78份贵州地方朝天椒种质资源为试材，采用遗传多样性分析、相关性分析、主成分分析、综合评价及聚类分析方法，研究了27个表型性状，以期为评价辣椒种质资源的遗传多样性提供参考依据。结果表明：表型性状的变异系数、多样性指数分布分别在4.94%～98.64%、0.58～2.04,遗传多样性丰富。各性状间存在着显著的相关关系，其中，单果质量、果宽与产量呈显著正相关，单株挂果数与产量呈显著负相关。主成分分析从27个表型性状中提取出9个主成分因子，解释了75.34%的性状信息。综合评价和聚类分析的结果筛选出CTJ-77、CTJ-73、CTJ-78、CTJ-75共4份优质种质资源，为下一步品种选育工作提供参考依据。
- Abstract:
- Taking 78 samples of local Guizhou chili pepper germplasm resources as the test materials,through methods such as genetic diversity analysis,correlation analysis,principal component analysis,comprehensive evaluation and cluster analysis,27 phenotypic traits were studied,in order to provide references for evaluating the genetic diversity of chili pepper germplasm resources.The results showed that,the variable coefficient and diversity index of phenotypic traits ranged from 4.94% to 98.64% and 0.58 to 2.04 respectively,which indicated a abundant diversity.Notable correlations were observed among the various traits,specifically,single fruit weight and fruit width exhibited a marked positive correlation with yield,whereas the number of fruits per plant showed a significant negative correlation with yield.9 principal components were distilled from the 27 phenotypic traits via principal component analysis,accounting for 75.34% of the overall trait information.4 elite germplasm resources CTJ-77,CTJ-73,CTJ-78,CTJ-75 were screened via comprehensive evaluation and cluster analysis,laying a reference foundation for the subsequent work of variety breeding.
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备注/Memo
第一作者简介：赖卫（1979-），男，本科，高级农艺师，现主要从事辣椒种质资源创新与应用等研究工作。E-mail：1412184277@qq.com.责任作者：杨红（1968-），女，硕士，研究员，现主要从事辣椒育种与栽培技术等研究工作。E-mail：gzyanghong2008@126.com.基金项目：2025年贵州省辣椒专班科技支撑资助项目（品目二）；2026年度中央引导地方科技发展资金资助项目（黔科合中引地［2026］010）。收稿日期：2026-03-12