花生品系主要农艺性状的相关性及聚类分析

Agronomic Characteristics and Cluster Analysis of Peanut Cultivars

为了对花生高代品系进行合理全面的选择评价,运用DPS数据软件对17个高代品系农艺性状数据进行相关及聚类分析,结果表明,主茎高、侧枝长、结果枝数、单株生产力变异系数较大。主茎高、侧枝长与百果重、百仁重、出仁率、单株生产力间呈显著负相关,单株生产力与结果枝数、单株结果数、百果重、百仁重间呈显著正相关。17个花生高代品系根据聚类性状不同而有不同类群,综合性状聚类分析在D2=6.21水平下可分为四大类,其中第二类群3个品系和第四类群的4个品系综合性状表现较好,值得推广。

Agronomic characteristics of 17 peanut cultivars were analyzed with statistical software DPS. The results showed large aberrance coefficient of plant height, branch length, effective branch, pod weight per plant. There were significant negative correlation between plant height, branch length and 100-pod weight, 100-kernel weight, shelling percentage. The pod weight per plant had a signifi- cant positive correlation with effective branch, pod number per plant, 100-pod weight, 100-kernel weight. The 17 peanut cultivars were classified to 4 groups at the level of D2 =6.21 based on integrated characteristics. Group 2 and Group 4 had excellent agronomic traits and were recommended for expansion.