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为获得平欧杂种榛叶面积简便、快捷的测定方法,分别于2011年7月和2012年7月,从6年生平欧杂种榛’达维’树上采集发育枝中段成熟叶片,以透明方格法和线性回归法测定叶面积结果表明:叶长、叶宽、叶长与叶宽乘积、叶长平方、叶宽平方与叶面积均呈正相关,其中以叶长与叶宽乘积与叶面积的复相关系数最高;以叶片特征值为因变量,以叶面积(Y)为应变量,采用逐步回归分析建立了叶面积二元回归方程,其中叶长(X_1)、叶长平方(X_1~2)和叶宽平方(X_2~2)是二元线性回归方程的3个自变量;通过对一元线性回归方程和二元线性回归方程的检验分析比较,确立了二元线性回归方程Y=67.248-13.917X_1+0.951 X_1~2+0.548X_2~2为平欧杂种榛’达维’叶面积回归方程。
In order to obtain a simple and rapid method for determining the hazel leaf area of hybrid F1 in Ping-Ou, mature leaf segments in the middle of developing branch were collected from the 6-year-old Pinot Noir hazel ’David’ in July 2011 and July 2012 respectively. The results showed that leaf length, leaf width, product of leaf length and leaf width, leaf length, square of leaf width and leaf area were positively correlated, and the product of leaf length and leaf width and leaf area The regression equation was established by stepwise regression with the leaf area (Y) as the dependent variable. The leaf area (X_1), leaf length (X_1 ~ 2) and leaf width squared (X_2 ~ 2) are the three independent variables of the binary linear regression equation. By checking and comparing the linear regression equation with the linear regression equation, the binary linear regression equation Y = 67.248 -13.917X_1 + 0.951 X_1 ~ 2 + 0.548X_2 ~ 2 is the regression equation of the leaf area of ’Davey’ in hybrid hazelnut.