Volume growth and wood density of plus tree progenies ofPinus contortain two Swedish field trials
作者:
Anders Fries,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1986)
卷期:
Volume 1,
issue 1-4
页码: 403-419
ISSN:0282-7581
年代: 1986
DOI:10.1080/02827588609382433
出版商: Taylor & Francis Group
关键词: Pinus contorta;wood density;ring width;heritability;correlation;indirect selection
数据来源: Taylor
摘要:
Seventy‐four half‐sib families of lodgepole pine(Pinus contortassp.latifoliaEngelm.) plus trees were measured for vigour, height growth, stem diameter, wood density and ring width in two Swedish field trials at age 9. Height growth, wood density and ring width differed between families within provenances with variance components of 3–8 %. Coefficients of variation were highest for height growth and lowest for ring width. Heritabilities were similar for height growth and wood density but lower for ring width. These genetic parameters seemed to be equal for all provenances. Indirect selection for high dry stem biomass was more effective using height growth than wood density, and a correlated response in wood density of 2.1 % of mean by selecting the 15 highest parent trees was indicated. Juvenile wood density looks uncertain as a selection criterion for mature wood density.
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