马尾松第1代无性系巢式交配设计子代林遗传变异分析及早期选择

以福建省漳平五一国有林场马尾松巢式交配设计的8年生遗传测定林为试材,分析其生长和木材基本密度等主要经济性状(父本/母本效应和加性/显性效应)。结果表明,不同家系间、父本间各性状的遗传差异显著;相同父本不同母本间仅胸径和单株材积性状的遗传差异显著。父本和母本效应直接影响胸径、单株材积生长,但二者效应差异较小,而8年生子代木材基本密度其母本效应是父本效应的19.41倍。以单株木材干物质积累量为选择指标,选出10个纸浆材优良家系及14个优良单株;以胸径、木材基本密度和通直度为选择指标,选出8个锯材优良家系及4个优良单株。

Genetic analysis on growth of nested mating superior clones of Pinus massoniana

Male and female parents effects,additive effect and dominant effect of growth traits and wood basic density were investigated in a progeny text forest of 8-year-old Pinus massoniana with nested mating design in Zhangping Wuyi National Forest Farm of Fujian.The results showed that,there were significant differences among different families and male parent in agronomic characters;female/male parents existed significant differences in DBH and stem volume.Male and female parent effects all worked on DBH and individual volume,but there was little difference between the parents' effect.For wood basic density,female parent effect of 8-year-old progeny was 19.41 times as large as male parents.Ten superior families and 14 superior individuals for pulp wood were selected based on the production of dry wood in individual.Eight superior families and 4 superior individuals for saw timber were selected based on DBH,wood basic density and stem straightness.