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UBC Theses and Dissertations
Juvenile-mature correlations in selected Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] provenances and progenies Musoke, Rachel
Abstract
Growth and branch characteristics of thirteen year old Douglas-fir trees were analysed with the objectives of partitioning the variance into additive and non-additive, estimating heritabilities, and estimating juvenile-mature genetic correlations. High correlations could be used in early selection to reduce the progeny testing periods with possible advantage of increasing selection differential and hence genetic gains. Most of the traits rendered non-significant additive variance, consequently non-significant heritabilities. Among the juvenile traits, embryo class and dormancy period revealed significant genetic correlations with the thirteen year old root collar diameter (0.73 and 0.32 respectively). This highlights the possible predictability of root collar diameter correlated response as a result of early selection based on embryo class or dormancy time.
Item Metadata
Title |
Juvenile-mature correlations in selected Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] provenances and progenies
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1981
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Description |
Growth and branch characteristics of thirteen year old Douglas-fir trees were analysed with the objectives of partitioning the variance into additive and non-additive, estimating heritabilities, and estimating juvenile-mature genetic correlations. High correlations
could be used in early selection to reduce the progeny testing periods with possible advantage of increasing selection differential and hence genetic gains.
Most of the traits rendered non-significant additive variance, consequently non-significant heritabilities. Among the juvenile traits, embryo class and dormancy period revealed significant genetic correlations with the thirteen year old root collar diameter (0.73 and 0.32 respectively). This highlights the possible predictability of root collar diameter correlated response as a result of early selection based on embryo class or dormancy time.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-03-23
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0095201
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.