摘要
本文报道了根据白榆种源试验10年的结果,计算出的树高和胸径生长量的年一年秩次相关,表型和遗传相关是极显著的。认为造林后第4年的表现已能可靠地预测10年时的表现。从计算不同选择年龄时的相关增益和年选择效率看,从第5年时实行早期选择是妥当的。
The juvenile-mature rank correlation of white elm tree height and DBH increment have been calculated according to the results of provenance test which was carried out for 10 years already. It was shown that phenotypic and genetic correlation was significant at 0.01 level. It suggested that the expression of white elm trees at the 4th year after plantation could be able to detect the expression of trees at the 10th year reliablly. And early selection would be appropriate from the 5th year, which was calcubated from the correlation gain and annual efficiency at different selection ages of white elm trees.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1991年第2期111-116,共6页
Scientia Silvae Sinicae
关键词
白榆
种源
早期选择
Ulmus pumila
Provenance
Juvenile-mature correlation
Early selection
