实生茶树产量性状的相关性和通径分析

Correlation between Various Factors and Yield of Tea Seedling Plants

为探讨实生茶树主要数量性状与单株产量间的关系,对27株实生茶树单株的数量性状进行调查并进行相关性和通径分析。结果表明,幼龄期茶树的叶片数、芽密度与6龄单株产量呈显著正相关关系,相关系数分别为0.517和0.516;单株产量只与株高和树冠面积有显著线性关系,多元回归方程为Y=83.522+0.602x_6+0.715x_7(r=0.797^(**));通径分析表明,树冠面积、叶片数、芽密度、百芽重是影响单株产量的重要因素,各性状间的互作效应对单株产量也有重要的影响。

Correlations between the major quantitative characteristics and the yield of tea plants bred from seeds were investigated. Selected characteristics of 27 tea seedling plants were subjected to a path analysis to establish the correlations. It was found that the yield of an individual 6th-instar plant correlated to the leaf count and bud density on the young plant with the correlation coefficients of 0. 517 and 0. 516, respectively. In addition, the fresh leaf yield per plant significantly correlated with the plant height and canopy area at a multiple linear regression function ofY=83. 522 ＋ 0. 602x6 ＋ 0. 715x？（r=0. 797＊＊ ） . The path analysis showed that both the measurements of and the interactions among the canopy area, leaf count, bud density and one-hundred-bud weight significantly correlated to the yield of a tea seedling plant after maturation.