【摘要】 以30年生‘石硖’龙眼为试材,应用生物统计软件对结果母枝单元质量的6个变量和果穗性状的4个变量,与果实外观色泽和单果重、可溶性固形物含量及落果率进行相关分析,结果表明:母枝单元质量与挂树期果实外观色泽关系均未达显著水平,而母枝直径与单果重为显著多项式相关关系,与果实可溶性固形物含量为显著正单相关关系;果穗宽度、果穗体积分别与可溶性固形物含量有显著、极显著正单相关关系,果穗长度与果皮L*为显著多项式相关,果穗长度和果穗体积分别与落果率有极显著多项式相关;复叶数、小叶数、小叶面积和总叶面积均与挂树龙眼保鲜效应无关。建议根据结果母枝质量分批次先后采收,将母枝单元直径0.87cm左右,果穗体积适中(V≈1 124.03cm~3),长度在36.67cm左右,叶色浓绿有光泽的果穗进行挂树延后采收。更多还原

【Abstract】 A biometric method was used to analyze the correlations between theappearances offruit-bearing branches(including 6independent variables)and panicles(including 4independent variables)on trees,as well as the pericarp color,single fruit weight,soluble solids and drop rate of the fruits of longan cv.Shixia(Dimocarpus longan Lour).There was no significant correlation observed between the branch properties and the fruit color.But,the diameter of afruit-bearing branch showed a significant monomial correlation with the soluble solids,and a significant multiple correlation with single weight ofthe fruits.The panicle width and volume significantly or highly significantly correlated with the fruit soluble solids.The panicle length exhibited a significant multiple correlation with the L*of the fruit peels.Both panicle length and volume had significantmultiple correlationswith drop rate ofthe fruits on the tree branches.There were no correlations between the numbers of compound leaves and leaflets,area of a single leafletor total leaf area on the branches with shelf life of the fruits.Consequently,a sequential cutting of fruit-bearing branches for harvestinglongans was recommended.Branches with the physical appearances including approximately 0.87 cm in stem diameter,1,124.03cm~3 in panicle volume,36.67 cm onbranch length,andleaves with a glossydark green color ought to be harvested late to allow additional time on the tree to maximize the fruit quality.更多还原