Plasticity and stability of hybrid aspen clones in 14 field trials over Sweden, Finland and north-west Russia
Abstract The study aimed at estimating the genotype × environment (G × E) interaction, stability and plasticity parameters for height growth and survival of hybrid aspen ( Populus tremula L. × Populus tremuloides Michx.) clones. A set of 17 hybrid aspen clones were studied at age four in 11 field tr...
| Published in: | Folia Forestalia Polonica |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Walter de Gruyter GmbH
2021
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.2478/ffp-2021-0018 https://www.sciendo.com/pdf/10.2478/ffp-2021-0018 |
| Summary: | Abstract The study aimed at estimating the genotype × environment (G × E) interaction, stability and plasticity parameters for height growth and survival of hybrid aspen ( Populus tremula L. × Populus tremuloides Michx.) clones. A set of 17 hybrid aspen clones were studied at age four in 11 field trials (series 1) and a set of 12 clones were studied at age 12 in three field trials (series 2) in Sweden, Finland and north-west Russia. There was an intermediate and significant correlation between height ranks at four and 12 years, showing modest G × E interaction for tree height. The corresponding correlation for survival was weak and insignificant, indicating a stronger G × E interaction than for height. The stability parameter ( S ) for height showed large differences among clones. The plasticity index ( PI ) values for height ranged from 0.6 to 0.8 among clones, demonstrating high levels of phenotypic plasticity. |
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