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落羽杉优良种源选择(PDF)

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

Issue:
2006年02期
Page:
47-50
Column:
研究论文
publishdate:
2006-02-20

Article Info:/Info

Title:
A Primary Study on Selection of Superior Provenance of Taxodium distichum (L.) Rich
Article ID:
1000-2006(2006)02-0047-04
Author(s):
LIU Xue-jun1 CAO Fu liang1* WANG Gui-bin1 WANG Qi-ming2
1. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037 China; 2. Jiangsu Academy of Forestry, Nanjing 211153, China
Keywords:
TaxodiuTn distichum (L.) Rich Provenance Synthetical selection
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2006.02.011
Document Code:
A
Abstract:
The tree height, DBH, individual volume, crown, height of the lowest branch, branching angle and number of shoot of 16 bald cypress (Taxodium distichum (L.)Rich) provenances were determined. The results were as follows= (1) There existed a significant variation of 16 provenances in tree height, DBH, individual volume, crown, height of the lowest branch, but the variations of the branching angle and number of shoot were not significant. The 9th and 6th provenance had highest height, DBH and volume,while the tree height, DBH and volume among 16th provenances was lowest. (2) The correlative analysis showed that there were significant positive relativity among the tree height, DBH, individual volume, crown and height of the lowest branch, but there was not obvious relativity between these indexes and branching angle and number of shoot. (3) The analysis results of heritability showed that the heritability of DBH of bald cypress was highest, and the heritability of the branching angle and number of shoot was lowest. (4)The 9th, 6th, 12th, 13th and 4th superior provenances were selected from the 16 provenances by using synthetical selection of multiple characters, and these five provenances had higher production after being cultivated.

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Last Update: 2013-05-20