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黑杨派新无性系研——Ⅶ生长早期选择(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1989年01期
Page:
10-21
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
STUDIES OF NEW CLONES OF THE AIGEIROS SECTION——Ⅶ. EARLY SELECTION OF GROWTH
Article ID:
1000-2006(1989)01-0010-12
Author(s):
Wu Rang ling Wang Mingxiu Huang Minren Lu Shixing Xu Xizeng & Xu Nong
Department of Forestry
Keywords:
The Aigeiros section Clone Early selection Genetic gain Optimum selection ageEarly selection result stability
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1989.01.002
Document Code:
A
Abstract:
This paper discussed the optimum selection ages(xmax) of height, diameter and volume in 1-69 poplar x Simon poplar and 1-69 poplar x Nigra poplar F1 clones, using annual genetic gain(△Gt) and expected genetic gain(Gt) as the evaluation criteria, and the stability of their early selection result was tested. Age of early selection might be as ealy as 2 years after plantation(not including plantation age) in 1-69 poplar x Simon poplar Ft clones. Age of early selection was 3~4 years after plantation(including plantation age) in 1-69 poplar x Nigra poplar F, clones. Selection for these two F1 clones at these ages would represent that at rotation ages, and genetic gain of the selection would achieve the maximum value. Therefore, it was concluded that early selection would be effective.

References

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Last Update: 1900-01-01