Earliness and growth performance in clones ofpicea abiesselected for late frost resistance
作者:
Kenneth Lundkvist,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1987)
卷期:
Volume 2,
issue 1-4
页码: 31-43
ISSN:0282-7581
年代: 1987
DOI:10.1080/02827588709382444
出版商: Taylor & Francis Group
关键词: Picea abies;clone;cutting;late‐frost‐resistance;genotype × environment interaction;repeatability
数据来源: Taylor
摘要:
Four late frost reistant trees in a young plantation ofPicea abieswere selected and compared with 15 non‐resistant ones after they had been propagated as cuttings. Two cutting trials were established, one in a nursery and one at the original selection site. Flushing, growth rate and total growth were assessed during four years. Frost resistant clones were found to be delayed in their flushing and growth development in early summer as compared to non‐resistant clones but the differences were not statistically significant. Large block variance and errors reduced the power of the statistical tests. Clone, site and year were found to be significant sources of variation in ANOVA, but neither interaction between clone and site nor clone and year were statistically significant. It is concluded that differences in growth rhythm parameters cannot be established between resistant and non‐resistant clones in this experiment, but the results are encouraging for the deployment of clones in forest plantations, provided the clones are tested and their performance remain stable over several propagation cycles.
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