树莓主要农艺性状与小区有效产量的相关和通径分析

Analysis of Correlation and Path between Main Agronomic Characters and Plot Effective Yield of Rubus corchorifolius

以8份树莓品种为试验材料,对农艺性状和小区有效产量进行相关性分析、回归分析和通径分析。结果表明,各农艺性状与单株产量的相关程度依次为:平均果重>侧根数>多年基生枝长度>侧根粗>主根粗>结果枝数>多年基生枝粗度>平均每枝结果数>平均单株基生枝数>平均单株产量;多元回归方程为:y=1.29+1.63x3-1.02x4-2.35x6-2.63x7+2.31x8+2.15x10。通径分析表明:侧根数、平均果重和平均单株产量对小区有效产量有直接的正向作用,主根粗、多年基生枝长度和平均单株基生枝数对小区有效产量的直接的负向作用。主根粗、多年基生枝长度和平均单株基生枝数可以通过协调其它性状对小区有效产量发挥作用。

The correlation analysis , regression analysis and path analysis were carried out to study the relationships between main agronomic characters and plot effective yield of 8 varieties of raspberry （Rubus corchorifolius）.The results displayed that the order of the correlation coefficient between various agronomic characters and plot effective yield was ：average fruit weight 〉number of lateral roots〉length of multi -year basal branches 〉width of lateral roots 〉width of taproots 〉number of fruit branches 〉width of multi-year basal branches 〉average number of fruits per branch 〉average number of basal branches per plant 〉average yield per plant.The multiple regression equation was：y=1.29＋1.63x3 -1.02x4 -2.35x6 -2.63x7 ＋2.31x8 ＋2.15x10 .Path a-nalysis showed that the number of lateral roots , average fruit weight and average yield per plant had direct positive effects on the plot effective yield of raspberry;the width of taproots , length of multi-year basal branches , and average number of basal branches per plant had direct negative effects;the width of taproots , length of multi-year basal branches , and average number of basal branches per plant could affect the plot effective yield through coordinating other characters .