油松双亲本子代测定及其优良家系选择的研究

Studies on Parent Progeny Test and Fine Family Selection of Pinus tabulaeformis Carr.

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。

Genetic gain and efficiency were evaluated through the investigation of the growth of test stands of parent progeny of 20 year Pinus tabulaeformis Can＇.. 10 fine families were selected from 99 parent families, in which the genetic gain of the mean height was 9.6% ,and the diameter was 15.17%. The result could be helpful to select propagation material during establishing second generation seed orchard, which had great significance for increasing the total wood production from sec- ond generation seed orchard.