【摘要】 随机抽样调查了新世纪 1号、2号和 3号的柿苗高度、节间长度、节数和砧木长度。t检验证明 ,不同品种的柿苗高度间差异显著或极显著。通径分析查明 ,影响柿苗高度的主次因素为节数、节间长度和砧木长度。柿苗高度 (y)与主要因素节数 (x2 )间的线性回归方程 :y =1 0 .44 +3 .33x2 。柿苗高度 (y)与节间长度 (x1 )、节数 (x2 )和砧木长度 (x3)间的多元线性回归方程 :y =- 66 .88+2 2 .68x1 +3 .82x2 - 1 .51x3,复相关系数Ry .1 2 3=0 .8631 。更多还原

【Abstract】 Four traits such as seedling height, internode leng th , node number, and root stock height had been measured with random sampling meth od in Xinshij i-1, 2, and 3 persimmon seedling. The results of t-test show that the seedling h eights of different varieties differ significantly or very significantly. The fu rther results of path analysis indicate that the three main factors, which affec t the seedling height of persimmon, are node number (x 2), internode length (x 1), and root stock height (x 3) in order of importance. The linear regression equati on between the seedling height (Y) and the main factor node number (x 2) is y= 1 0.44 + 3.33x 2. The mathematic model of Xinshiji persimmon seedling is Y=-66. 88 + 3.82x 2 - 1.51x 3. R y.123 =0.8631 ** .更多还原