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黑杨派新无性系研究——Ⅴ.树冠结构与干形改良(PDF)

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

Issue:
1988年03期
Page:
1-14
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
STUDIES OF NEW CLONES OF THE AIGEIROS SECTION——V. The Relationships of Tree Crown Structure with Stem Form improvement
Article ID:
1000-2006(1988)03-0001-14
Author(s):
Wu Rong ling Wang Mingxiu Huang Minren Lu Shixing Xu Xizeng & Xu Nong
Department of Forestry
Keywords:
The Aigeiros Section Clones Round degree Straight degree Stem form improvement
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1988.03.001
Document Code:
A
Abstract:
This paper analysed the genetic variation of the stem form characters in 1-69 poplar × Simon poplar and 1-69 poplar × Nigra poplar F1 clones, which indicated that it is possible to select directly for stem form. In, order to tap adequately the potential of stem form improvement and to provide theoretical foundation for mult-generation breeding, the possibility of selecting indirectly for stem form from the tree crown structure was studied. The analysis of ge-notypic correlation provided the asseciations of different characters composing of tree crown to stem form and path-analysis analysed concretely their direct and indirect effects so as to determine the ideal crown form for stem form improvement of two different F1 clones. Based on the comparison among the results of selecting indexes of stem form of different characters combinations, the stem form estimates of different clones were taken by the most reasonable selection equations. By means of the comparison of the results of stem form selection to those of growth selection, the possibitity of improving simultaneously growth and stem form was concretely reviewed.

References

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Last Update: 1900-01-01