黑龙江农业科学Issue(12)：21-28,8.DOI:10.11942/j.issn1002-2767.2024.12.0021
宁南山区苦荞新品种主要农艺性状主成分分析及综合评价
Principal Component Analysis and Comprehensive Evaluation of Main Agronomic Traits of New Varieties of Tartary Buckwheat in Southern Mountainous Areas of Ningxia
摘要
Abstract
In order to select excellent varieties suitable for tartary buckwheat local cultivation.Five new varieties of tartary buckwheat were introduced and independently selected as materials,multiple experiments were conducted in 5 counties(districts)in semi-arid and central arid regions,and correlation and coefficient of variation,principal component analysis,and comprehensive evaluation were conducted on the main agronomic traits of the varieties.By conducting correlation and principal component analysis on the main trait indicators that affect grain yield,such as plant height,number of grains per plant,grain weight per plant,number of primary branches,density,etc,and combined with variance decomposition principal component feature contribution analysis.The results showed that the cumulative contribution rate of PCA1-PCA3 feature values to the extraction of principal components reached 93.424％-98.714％.The first principal component accounts for 37.764％-50.335％,mainly with the eigenvectors of grain weight per plant,grain number per plant,and plant height being greater than other agronomic traits.The second principal component accounts for 30.478％-31.255％,mainly consisting of field density,plant height,and primary branching as population growth factors.The third principal component accounts for 17.901％-24.404％,which was the impact of the number of main stem nodes and thousand grain weight on yield.The comprehensive score coefficients of principal component analysis for the tested varieties Jinqiao 2 and Qianheiqiao 5 in semi-arid and central arid regions were 1.79,1.09,and 1.44,3.13,respectively.In summary,Jinqiao 2 and Qianheiqiao 5 with excellent comprehensive agronomic traits,high yield and good stability,suitable for planting in semi-arid and central arid areas of the Southern Mountainous Areas of Ningxia.Chuanqiaomai 3 were selected as mid to late maturing varieties that can be planted in areas with better water and heat conditions.关键词
苦荞麦/新品种/农艺性状/主成分分析/综合评价Key words
tartary buckwheat/new varieties/agronomic characters/principal component analysis/comprehensive evaluation引用本文复制引用
常克勤,杜燕萍,穆兰海,杨崇庆,陈一鑫,张月荷..宁南山区苦荞新品种主要农艺性状主成分分析及综合评价[J].黑龙江农业科学,2024,(12):21-28,8.基金项目
宁夏农林科学院农业科技自主创新专项科技成果转化项目(NNKZZCGZH-2023-02) （NNKZZCGZH-2023-02）
农业农村部-燕麦荞麦产业技术体系固原综合试验站(CARS-07-G-15). （CARS-07-G-15）
