南方新育成花生品种主要农艺性状与单株生产力的相关性分析

以南方新育成的9个花生新品种为研究对象,对主要农艺性状与单株生产力进行相关性分析。相关分析结果表明,饱果数与单株生产力呈极显著正相关;出仁率与单株生产力呈显著正相关;主茎高、侧枝长、结果枝数与单株生产力呈正相关但不显著;总分枝数、百果重与单株生产力呈负相关。通径分析结果表明,各性状与单株生产力直接通径系数从大到小依次为:出仁率、侧枝长、百果重、总分枝数、饱果数、结果枝数、主茎高。在花生高产品种选育中,应注重果多、果饱、出仁率高、果较大的单株的选择,并兼顾其他农艺性状。

Correlation Between Agronomic Characteristics and Productivity of New Peanut Varieties from South China

Nine newly bred peanut varieties in south China were used in the study.Correlation analysis showed that the percentages of plump pods and shelling were very significantly correlated with the plant productivity.The stem height,branch length and pod branches of a peanut plant were positively,but not significantly,correlated to its productivity.The total number of branches and 100-pod weight were negatively correlated with the plant productivity.Path analysis showed that the direct path coefficients between the yield traits and plant productivity ranging from high to low were as follows: shelling percentage,branch length,100-pod weight,total branch number,plump pod percentage,pod branches and stem height.In breeding high-yield peanut varieties,selection of the traits,such as pod number,plump pods,shelling and pod size should be important.While,other agronomic characteristics could be secondary for consideration.