论文部分内容阅读
观察和分析4个苏丹草品种和6个栽培高粱品种的64个生物学性状。利用性状间的相关关系和系统聚类结果,探讨了在田间种植环境条件下生物学性状的分类学意义;利用主成分分析法确定出6个主分量,其中主成分Ⅰ、Ⅱ在苏丹草和栽培高梁2类群演化过程中起着决定性作用,被称作苏丹草分化主因子和高粱分化主因子。以6个主成分的回归因子得分值对10个品种进行聚类分析,结果将苏丹草和栽培高粱划分成两大类。
Sixty-four biological traits of four cultivars of Sorghum and six cultivated sorghum were observed and analyzed. The taxonomic significance of the biological traits under field planting environment was discussed by using the correlations between the traits and the results of systematic clustering. Six principal components were identified by principal component analysis. Among them, Cultivation Sorghum two groups play a decisive role in the evolutionary process, known as Sudan grass differentiation main factors and sorghum differentiation. Cluster analysis of 10 cultivars based on the regression score of six principal components resulted in the classification of sudangrass and cultivated sorghum into two major groups.