Inbreeding depression in two field trials of youngpinus sylvestris(L.)
作者:
Kenneth Lundkvist,
Gösta Eriksson,
Lennart Norell,
Inger Ekberg,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1987)
卷期:
Volume 2,
issue 1-4
页码: 281-290
ISSN:0282-7581
年代: 1987
DOI:10.1080/02827588709382465
出版商: Taylor & Francis Group
关键词: Pinus sylvestris;inbreeding depression;stem volume;height;within‐family variance
数据来源: Taylor
摘要:
Inbreeding depression after selfing was estimated in two field trialsof Pinus sylvestris, age 11 and 14 years, respectively, by comparing stem volume and height after selfing and outcrossing. For the majority of trees, inbreeding caused a statistically significant reduction in stem volume. The average inbreeding depression for stem volume was 46% and 66% for the two trials, respectively, with a large variation among trees. For one of the trials, the inbreeding depression for height remained at a constant level between age 6 to 14 years, while the inbreeding depression increased between age 6 to 11 years for the other trial. Inbreeding depression was not found to be correlated with the GCA for stem volume of the individual trees. The relative phenotypic within‐family variance was found to be higher in progenies after selfing as compared to outcrossing.
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