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美洲黑杨×欧美杨F1无性系的多性状联合选择(PDF)

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

Issue:
2005年02期
Page:
6-10
Column:
研究论文
publishdate:
2005-02-20

Article Info:/Info

Title:
Research on Growth and Wood Properties Joint Genetic Improvement of New Clones of Poplus deltoides (I-69)
Article ID:
1000-2006(2005)02-0006-05
Author(s):
GUAN Lan-hua12 PAN Hui-xin1* HUANG Min-ren1 SHI Jisen1
1. Key Laboratory of Forestry Genetics and Gene Engineering Nanjing Forestry University, Nanjing 210037, China; 2. China-Japan Cooperation Science and Technology Center for Forest Tree Improvement Project, Wuhan 430079, China
Keywords:
Joint genetic improvement Genetic gain Selection index Directional selection
Classification number :
S722
DOI:
10.3969/j.jssn.1000-2006.2005.02.002
Document Code:
A
Abstract:
The joint genetic improvement of the growth, wood properties and stem form with the data of the 12th year of 33 F1 clones of Poplus deltoides (I-69)~P. euramericana(I-45) were studied. Superior clones could be selected from the independent knocking-out selection. The aggregate character was improved with selection index, but the genetic gain of single character with selection index was less than that of single character selection. Selected with the index of volume and wood density, the clones with fast growth and high density were bred,which was the same of 66.7% as that was selected with the independent knocking-out selection. Selection index B and D were the good indexes composed of growth,wood quality and stem form. When selected with index B,whose heritability was 0. 653 5,the genetic gain of wood density was very small,but the genetic gain of volume was 5.14%. However the genetic gain of wood density was 6. 27% and the volume was not decreased at all selected through index D with heritability 0. 702. It was applicable that the aggregate evaluation and directional selection of multi-characters could be done with selection index.

References

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Last Update: 2013-05-20