Correlation and grey relational analysis of main agronomic traits of rabbiteye blueberry

A better understanding of the primary and secondary correlation among various agronomic traits and the objective of rabbiteye blueberry is helpful for blueberry breeding,introduction and cultivation.The relationship among 8 agronomic traits of blueberry was analyzed by using the multiple comparison,correlation analysis and grey relation analysis.The result showed that the plant yield had the greatest correlative degree with the number of bearing branches,and had less correlative degree with the weight of single fruit and fruit number of each branch.The single plant yield had significantly positive correlation with plant height,number of bearing branches,average fruit number of each branch,number of branches born in a year,and single fruit weight,while the single plant yield had negative correlation with the occurrence rate of fruit fly.