辣椒种质资源农艺性状综合评价
Comprehensive Evaluation of Agronomic Traits of Pepper Germplasm Resources
洪成 1赵建荣 1程春园 2郑婉婉 1耿三省 2陈斌 2杜和山 2张晓芬2
作者信息
- 1. 安徽科技学院,安徽滁州 233100
- 2. 北京市农林科学院蔬菜研究所,蔬菜生物育种全国重点实验室,蔬菜种质改良北京市重点实验室,华北地区园艺作物生物学与种质创制重点实验室,国家蔬菜工程技术研究中心,北京 100097
- 折叠
摘要
以273份辣椒种质为材料,采用变异系数分析、多样性指数分析、相关性分析、主成分分析、聚类分析等方法对农艺性状进行综合评价.结果显示:273份辣椒种质资源的17个重要农艺性状平均变异系数为19.99％～107.16％,供试材料间单果质量差异最大,变异系数为107.16％,单株果数遗传多样性指数最大,为1.97;13个主要农艺性状之间相关性较高;果实横径、果顶形状、胎座大小、青熟果颜色是辣椒性状变异的主要因素.主成分分析将13个主要农艺性状简化为4个主成分,累计贡献率为59.91％,分别反映了果实横径、果顶形状、胎座大小、青熟果颜色.通过综合得分获得10份优良辣椒种质,排名前三的辣椒种质为来自云南的薄皮椒T302、T281、T301,其单株果数、单果质量、果实纵径和横径均较高.聚类分析将273份辣椒种质分为4个组群,有效区分了不同的辣椒材料.
Abstract
This study used 273 chilli pepper germplasm resources as materials and employed coefficient of variation,diversity index,correlation,principal component and cluster analyses to evaluate the main agronomic traits of peppers.The results showed that the average coefficient of variation for 17 important agronomic traits in 273 chili pepper germplasm resources was 19.99％-107.16％.The difference in single fruit weight between the materials is the largest,with a coefficient of variation of 107.16％.The diversity index for fruit number per plant was the highest,with a value of 1.97.There is a high correlation between the 13 main agronomic traits.The main factors affecting the variation of chili pepper traits are fruit transverse diameter,the shape of fruit top,placenta size,and green ripe fruit color.Principal component analysis of 13 major agronomic traits into 4 principal components,with a cumulative contribution rate of 59.92％,which respectively reflected fruit transverse diameter,the shape of fruit top,placenta size,and green ripe fruit color.This study obtained the top 10 chili pepper germplasm materials through comprehensive score.The top three chili pepper germplasm resources in the rankings are thin skinned peppers T302,T281,and T301 from Yunnan.Their fruit number per plant,single fruit weight,the longitudinal diameter and transverse diameter of fruits are all relatively high.Cluster analysis divided 273 chili pepper germplasm materials into 4 groups,effectively distinguishing different chili pepper materials.
关键词
辣椒/种质资源/相关性分析/主成分分析/聚类分析/综合评价Key words
pepper/germplasm resource/correlation analysis/principal component analysis/cluster analysis/comprehensive evaluation引用本文复制引用
基金项目
北京市农林科学院科技创新能力建设专项重大专项(KJCX20230813)
北京市联合攻关项目(G20220628003-01)
国家重点研发计划项目(2023YED120000502)
国家自然科学基金面上项目(32072566)
出版年
2024
国家科技期刊平台
NSTL
万方数据