摘要
福建柏 17个地理种源 4～ 5年幼林期树高、胸径生长均有极显著差异 ,其中胸径差异大于树高。种源×地点交互作用显著 ,树高和胸径生长量山区 >半山区 >丘陵区。种源生长性状存在以纬向渐变为主的地理变异趋势。根据胸径遗传增益大于种源平均值 15 %以上的选择标准 ,初步选出适宜不同生态环境造林地的 3个优良种源 ,其遗传增益为17.38%～ 2 1.0 5 %。树高、胸径最大生长率均出现在 4～ 5年幼林期 。
There were obvious differences in the height and diameter growth of Fokienia hodginsii , a young forest 4～5 years old in 17 geographical provenances, and the difference in the diameter was more obvious than in the height. Between the provenances and environment of interaction, the rank of height and diameter growth volume productivity was mountain > middle mountain area> hill. The rules of geographic variation of provenances on young growth properties change mostly by the latitude. Based on the selection standard on the genetic gain exceeded (15%) of average provenances, 3 superior provenances were tentatively selected with the genetic gain of 17.38%～21.05% respectively and could be afforested in different biological environments. The fastest growth rate of height, diameter and volume of provenances was in the young forest of 4～5 years old, and it showed that the stability in growth of nonage selection.
出处
《植物遗传资源学报》
CAS
CSCD
2004年第2期179-184,共6页
Journal of Plant Genetic Resources
基金
国家"九五"林业科技攻关项目( 96 0 11 0 3 0 3 0 2)
国家"十五"林业科技攻关项目( 2 0 0 2BA5 15B0 10 4)
关键词
福建柏
地理种源
遗传变异
胸径
生长
树高
Fokienia hodginsii
Provenances
Genetic variation
Nonage selection
