The selection effect was evident that 37.5% gain in single individual seed yield could be obtained, which achieved the purpose of improving seed orchard yield and increasing the genetic gain.
The selection effect was evident that 37.5% gain in single individual seed yield could be obtained, which achieved the purpose of improving seed orchard yield and increasing the genetic gain.
8年生子代材积可获得改良增益10.6%，木材比重可获得4.6%的增益，种子园单株产种量可获得增益37.5%，选择效果明显，达到提高种子园产量、增加改良增益的目的。