The genetic variation of inter‐provenance hybrids ofpicea abiesand possible breeding consequences
作者:
Zeki Kaya,
Dag Lindgren,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1992)
卷期:
Volume 7,
issue 1-4
页码: 15-26
ISSN:0282-7581
年代: 1992
DOI:10.1080/02827589209382694
出版商: Taylor & Francis Group
关键词: Norway spruce;provenance hybrids;general combining ability;specific combining ability;family heritability;genetic correlation;clonal forestry.
数据来源: Taylor
摘要:
The variance of general combining ability (GCA) and specific combining ability (SCA) for height and diameter growth were estimated from a 13 years old provenance hybridization study in Norway spruce. The GCA variance component for both height and diameter growth was significant, but there was no significant SCA variance. Hybrid progenies outperformed the progenies from stands, but this superiority was not interpreted as a provenance heterosis effect. Estimated family heritabilities for height and diameter growth were moderately high (0.40 for both traits). A consequence of the low SCA variance for Norway spruce may be that clonal testing should replace progeny testing for estimating GCA.
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