ZHANG Jing,WU Dan,CAO Liqiang,et al.Multivariate Statistical Analysis of Phenotypic Genetic Variation and Core Trait Screening in Capsicum annuum var.glabriusculum Germplasm Resources[J].Northern Horticulture,2026,(13):1-7.[doi:10.11937/bfyy.20254358]
羊角椒种质资源表型遗传变异的多元统计分析及核心性状筛选
- Title:
- Multivariate Statistical Analysis of Phenotypic Genetic Variation and Core Trait Screening in Capsicum annuum var.glabriusculum Germplasm Resources
- 文章编号:
- 1001-0009(2026)13-0001-08
- Keywords:
- horn pepper; agronomic traits; genetic diversity; yield correlation; multivariate analysis
- 分类号:
- S641.3
- 文献标志码:
- A
- 摘要:
- 以77份羊角椒种质为试材，采用田间性状调查与统计分析相结合的方法，研究了11个农艺性状的遗传多样性、相关性、主成分及产量形成通径机制，以期为羊角椒种质资源的分类利用、亲本筛选与高产育种提供参考依据。结果表明：供试种质遗传多样性丰富，生长习性（CV=40.97%）、单株果数（CV=53.19%）和单株产量（CV=31.54%）为变异最显著的性状；性状相关性结果表明，单果质量与果实横径、纵径极显著正相关（P<0.01），单株果数与单果质量极显著负相关（r=-0.500，P<0.01），单株产量由单株果数和单果质量共同决定；主成分分析筛选出5个特征值大于1的主成分，累计贡献率达76.953%；系统聚类将种质划分为早花多果高产型、高大株型中花中产型、宽冠大果高产型3个类群；通径分析表明，单株果数（直接通径系数=0.857，P<0.001）和单果质量（直接通径系数=0.679，P<0.001）是产量的核心决定因子。
- Abstract:
- Seventy-seven horn pepper germplasm accessions were used as experimental materials.By combining field trait investigation with statistical analysis,the genetic diversity,correlation,principal component differentiation and path mechanism of yield formation of 11 agronomic traits were studied,in order to provide references for the classification and utilization of horn pepper germplasm resources,parent screening and high-yield breeding.The results showed that the tested germplasm resources exhibited abundant genetic diversity,with growth habit (CV=40.97%),number of fruits per plant (CV=53.19%) and yield per plant (CV=31.54%) being the most significantly variable traits.Correlation analysis revealed that fruit weight per fruit was extremely significantly positively correlated with fruit transverse diameter and fruit longitudinal diameter (P<0.01),while the number of fruits per plant was extremely significantly negatively correlated with fruit weight per fruit (r=-0.500,P<0.01),indicated that yield per plant was jointly determined by the number of fruits per plant and fruit weight per fruit.Principal component analysis identified 5 principal components with eigenvalues greater than 1,which accounted for 76.953% of the total variance.Systematic cluster analysis divided the germplasm resources into 3 groups,early-flowering,high fruit number and high-yield type,tall plant type,medium-flowering and medium-yield type,and wide-canopy,large fruit and high-yield type.Path analysis demonstrated that the number of fruits per plant (direct path coefficient=0.857,P<0.001) and fruit weight per fruit (direct path coefficient=0.679,P<0.001) were the core determinants of yield.
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备注/Memo
第一作者简介：张晶（1987-），女，硕士，副研究员，现主要从事蔬菜新品种选育及栽培技术等研究工作。E-mail：574021739@qq.com.责任作者：谢淑琴（1974-），女，本科，研究员，现主要从事蔬菜新品种选育及栽培技术等研究工作。E-mail：961903978@qq.com.基金项目：定西市科技计划资助项目（DX2024AZ13）；甘肃省现代寒旱特色农业菜产业技术体系高原夏菜育种和栽培岗位专项资金资助项目（GSARS-03）；定西市科技计划资助项目（DX2025AYN010）。收稿日期：2025-12-19