通过对20年生油松双亲本子代测定林生长性状的调查,对不同家系进行方差分析,探索了油松双亲本家系树高、胸径生长量性状遗传变异和选择规律。从99个双亲本家系中共筛选出10个优良家系,估算其平均树高、胸径的遗传增益分别为9.6%和15.17%.这为建立第2代油松种子园提供了双亲本优良家系的繁殖材料。 Through the investigation of 20-year-old Pinus tabulaeformis parents on behalf of the determination of forest growth traits, variance analysis was conducted on different families to explore the genetic variation and selection rules of tree height and DBH growth traits in both parents of this family. A total of 10 elite families were screened from 99 parents, and the average tree height was calculated, with the genetic gains of 9.6% and 15.17%, respectively. This provided the breeding parents of the elite parents material.