河南省珍珠豆型花生主要农艺性状与单株生产力的相关及通径分析

目的]为河南省珍珠豆型花生育种提供理论参考依据。方法]对河南省18个珍珠豆型花生品种农艺性状与单株生产力进行相关及通径分析。结果]相关分析表明，百果重、百仁重与单株生产力呈显著正相关；主茎高、侧枝长、总分枝数、结果枝数、单株结果数、饱果率与单株生产力呈正相关，但是出米率与单株生产力呈负相关。通径分析表明，各性状对单株生产力的直接贡献大小顺序为：主茎高〉百果重〉单株结果数〉百仁重〉饱果率〉总分枝数〉结果枝数〉出米率〉侧枝长。结论]河南省珍珠豆型花生育种应选择单株结果数多，百果重、百仁重、主茎高和侧枝长适宜，总分枝数、结果枝数和饱果率相协调的品种。

Correlation and Path Analysis of Main Agronomic Characters and Productivity Per Plant of Pear Bean Type Peanut of Henan Province

Objective] The aim was to provide a theoretical reference basis for breeding of pear bean type peanut in Henan Province. Method ] Agronomic characters and productivity of 18 pear bean type peanut cuhivars of Henan Province were analyzed by correlation and path coef- ficient analysis. Result] The correlation analysis results showed that the 100-pod and 100-seed weight were positive significant correlation with the productivity per plant; the productivity per plant had a positive correlation with six characteristics, including main stem height, lateral branch length, the number of total branches, the number of fruiting branches, the pod number per plant and full-pod rate, while a negative correlation with shelling percentage. The analysis results of path coefficient showed that the direct contribution rate of different traits to the productivity per plant was in order： the main stem height 〉 100 pods weight 〉 pod number per plant 〉 100 seeds weight 〉 the full-pod rate 〉 the number of total branches 〉 the number of fruiting branches 〉 shelling percentage 〉 lateral branch length. Conclusion ] When breeding the pear bean type peanut cultivars, the peanut cultivar should be selected that have more pod number per plant, appropriate 100-pod weight, 100-seed weight, main stem height and lateral branch length, coordinated the number of total branches, the number of fruiting branches and the full-pod rate.