欢迎访问林业科学,今天是

›› 1991, Vol. 27 ›› Issue (2): 111-116.

• 论文及研究报告 • 上一篇    下一篇

白榆种源试验中选择年龄的探索

马常耕 田志和   

  1. 中国林业科学研究院林业研究所;辽宁省林业科学研究院
  • 收稿日期:1990-03-14 修回日期:1900-01-01 出版日期:1991-03-25 发布日期:1991-03-25

THE INVESTIGATION OF SELECTION AGE IN WHITE ELM PROVENANCE TEST

Ma Changgeng,Tian Zhihe   

  1. Research Institute of Forestry, Chinese Academy of Forestry;Liaoning Academy of Forestry
  • Received:1990-03-14 Revised:1900-01-01 Online:1991-03-25 Published:1991-03-25

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。

关键词: 白榆, 种源, 年一年相关, 早期选择

Abstract: 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.

Key words: Ulmus pumila, Provenance, Juvenile-mature correlation, Early selection