中国农业科技导报2024，Vol.26Issue(7)：14-24,11.DOI:10.13304/j.nykjdb.2023.0097
基于GT双标图对小麦新品系的分类评价
Classification and Evaluation of New Wheat Lines Based on GT Biplot
摘要
Abstract
In order to comprehensively and accurately evaluate the new wheat lines in drought-rich land experiment,26 wheat lines participating in the National Dryland Group multi-point comparative experiment from 2020 to 2021 were selected as the materials.Multivariate statistical methods were used to analyze the changes of yield and quality traits under field conditions during the 2 years.The results showed that the 2-year variation coefficients of yield and quality traits of 26 new lines were 2.0%～74.2%and 2.1%～95.1%,respectively.The variation coefficients from high to low were stable time＞wet gluten content＞protein content＞water absorption=yield per unit area＞bulk density;correlation analysis showed that there was a negative correlation between yield and quality traits in 2 years.The stable time was positively correlated with protein content and water absorption,but negatively with yield.The correlation coefficient between stable time and protein content was higher in 2 years.Based on the correlation analysis,26 new wheat lines in 2 years were grouped into 4 categories by cluster method.The results of clustering were shown in Genotype by trait(GT)biplot and cluster plot,respectively.The clustering results were consistent with the actual performance of the new lines.'Taikemai 4835''Luohan 35''Nongda 162'and'Shannong 611436'were divided into the same type for consecutive 2 years,and these lines were characterized by high yield and good quality.Above results provided theoretical basis for the rational evaluation and popularization of the new wheat lines.关键词
小麦新品系/主成分分析/GT双标图/聚类分析/产量/品质性状Key words
new wheat lines/principal component analysis/genotype by trait biplot/cluster analysis/yield/quality character分类
农业科技引用本文复制引用
孙宪印,钱兆国,赵岩,高明刚,牟秋焕,米勇,吕广德,亓晓蕾,孙盈盈,尹逊栋,王瑞霞,吴科..基于GT双标图对小麦新品系的分类评价[J].中国农业科技导报,2024,26(7):14-24,11.基金项目
国家小麦产业技术体系项目(CARS-03-61) （CARS-03-61）
山东省重点研发计划项目(2018GNC2302) （2018GNC2302）
山东省现代农业产业技术体系育种岗位专家项目(SDAIT-01-04) （SDAIT-01-04）
山东省农业良种工程项目(2019LZGC010) （2019LZGC010）
泰安市科技发展计划项目(2019NS078). （2019NS078）
