苹果果实形状和重量的早期预测研究

通过果实生育早期的果形指数和果实纵径 横径可以成功预测苹果果实成熟时的果形指数和单个果实的重量。红富士苹果通过盛花后30d时的果形指数(X)预测成熟时的果形指数(Y)的回归方程为幂函数Y=0.805X0.278,果形指数随盛花后天数的变化拟合抛物线函数Y=1.36-0.009X 0.000035X2。在中国西北黄土高原旱原地区,红富士苹果在盛花后约50d以前果形指数大于1;之后逐渐降低,盛花后约129d时降低至最小0.7814;果实成熟前有所回升,至成熟采收时约为0.8740。通过测量盛花后50d时的果实纵径 横径(X,cm),可以预测成熟时的单果重(Y,g),其回归方程为幂函数Y=0.677X3.2。

Study on the Forecasting of Apple Fruit Form Index and Fruit Weight during the Early Growing Season

The fruit form index and individual fruit weight at harvest time were forecasted by fruit form index and fruit length diameter respectively during the early growing season. The fruit form index at 30 days after full bloom (DAFB) was correlated with that at harvest by power function Y=0.805X0.278.And the fruit form index in different growing season was correlated with the DAFB by equation Y=1.36-0.009X 0.000035X2.The fruit length diameter at 50 DAFB(X ,cm) was correlated with the individual fruit weight at harvest (Y ,g)by power function Y=0.677X3.2?