1. 6个豇豆品种农艺性状的相关性、主成分及聚类分析.
- Author
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张朝明, 赵 坤, 唐 胜, 黎兆山, 陈 梅, 周作高, and 周生茂
- Subjects
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PRINCIPAL components analysis , *CLUSTER analysis (Statistics) , *COWPEA , *CREDIT ratings , *EUCLIDEAN distance , *STATISTICAL correlation - Abstract
The present paper aimed to analyze and evaluate the agronomic characters of cowpea varieties, and provide reference for screening cowpea varieties suitable for cultivation in N anning and its surrounding areas. [ Method] A comparative experiment of six cowpea varieties was carried out in Suwei Town, N anning City, Guangxi. Thirteen agronomic characters including double pods rate, high yield, pod longitudinal diameter, single pod weight and disease resistance were measured, and the correlation, principal component analysis and cluster analysis were used for comprehensive evaluation. [ Result] Correlation analysis showed that the number of branches per plant was the main reason affecting the number of seeds per pod and the number of main stem nodes. The length and width of pods were restricted by double pod rate and commercial pod rate. The rate of commercial pods and the number of main stem nodes had the greatest influence on single pod weight, and the increase of plant incidence would lead to the decrease of single pod weight. The results of principal component analysis showed that the cumulative contribution rate of variance of 13 agronomic characters of Guixiang No. 1, Gannong Chaoxnan and Chaoyue 708 ranked the top 3, and their comprehensive scores were 80. 37165,57. 56157 and 30. 08979,respectively. The top three varieties with comprehensive scores were Treasures No. 5,Jindou No. 8 and Taicheng Qianfeng, with comprehensive scores of -44. 20257, -50.45963 and -73. 36081, respectively. Cluster analysis showed that six cowpea varieties could be divided into two groups at the Euclidean distance of 15, among which Guirong No. 1, Gannong Chaoxnan and Chaoyue 708 in I group were characterized by high yield and strong disease resistance. Treasures No. 5, Jindou No. 8 and Taicheng Qianfeng of the second category had precocious characteristics. [Conclusion] Cowpea varieties Guijin No. 1, Gannong Chaoxnan and Chaoyue 708 have good performances in Suxu Town,Nanning City, Guangxi in yield and disease resistance, and are suitable for large-scale planting in Nanning and its surrounding areas. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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