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This paper deals with the initial plus trees selected in the excellent plantations, and 60 excellent phenotypes were gained. With correlation analysis, path analysis, regression analysis and clustering analysis, the results of studying the effect of 13 factors on unit yield show that the height, crown area and branching ability are highly signiflcant correlated with the unityield. Crown area, soil fertility, anthracnose infection rate, proportion of nutrient andfruited branches and meanfruit weight have highly signiflcant linear correlation with unit yield. The correlationresults in a forecasting model Y=15.296+2.171x1 + 0.508x4 - 1.853x6 - 0.133x11 - 2.382x12 Fifteen high-yielding plus trees were chosen among 60 trees, in which 9607 and 9764 are the best.
This paper deals with the initial plus trees selected in the excellent plantations, and 60 excellent phenotypes were gained. With correlation analysis, path analysis, regression analysis and clustering analysis, the results of studying the effect of 13 factors on unit yield show that the height crown area and branching ability are highly signiflcant correlated with the unityield. Crown area, soil fertility, anthracnose infection rate, proportion of nutrient and regulatory branches and meanfruit weight have highly signiflcant linear correlation with unit yield. The correlation results in a forecasting model Y = 15.296 + 2.171 × 1 + 0.508 × 4 - 1.853 × 6 - 0.133 × 11 - 2.382 × 12 Fifteen high-yielding plus trees were chosen among 60 trees, in which 9607 and 9764 were the best.