论文部分内容阅读
对马尾松15年生半同胞家系子代林的木材研究表明:木材密度、管胞长度地点变异性存在显著差异,主要由个体变异引起,占总变异的61．52％和78．32％。家系均值折线图显示,不同地区木材的基本密度、管胞长度层次明显。基本密度、管胞长度广义遗传力中等,分别为33．37％和19．69％,单株遗传力小。木材密度与产脂力、高径生长呈显著的正相关(相关系数分别为0．108 1,0．185 8,0．105 6),认为选择同时具有产脂力高、生长量大以及材质优良的马尾松半同胞家系或个体是可能的。
Wood studies on offspring of 15-year-old half-sibs from Pinus massoniana showed that wood density and tracheid length were significantly different from each other, mainly due to individual variation, accounting for 61.52% and 78.32% of the total variance. Family line mean line chart shows that the basic density of different regions of wood, tracheid length level obvious. The basic density, tracheid length of the broad sense of heritability moderate, respectively, 33.37% and 19.69%, a small heritability. There was a significant positive correlation between wood density and fat-producing ability and height-diameter growth (correlation coefficients were 0.108, 0.185 8 and 0.105 6, respectively). The results showed that the combination of high density and high growth rate, It is possible to have an excellent family of half-sibs or individuals of the masson pine.