Genetic control of wood colour, density and heartwood ellagitannin concentration in European oak (Quercus petraea and Q. robur) |
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Authors: | MOSEDALE, J.R. CHARRIER, B. JANIN, G. |
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Affiliation: | 1Oxford Forestry Institute, Department of Plant Sciences South Parks Road, Oxford OX1 3RB, England 2Ecole Supérieure du Bois CP 3029, rue Christian Pauc, 44087 Nantes Cedex 03, France 3INRA, Equipèe de Recherches sur la Qualitée des Bois, Centre de Recherches dc Nancy 54280 Champenoux, France |
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Abstract: | Pressler cores of young clones of Quercus petraea and Q. roburwere analysed from two sites in Germany. Variation of wood colour(defined by the CIELAB system), density and heartwood ellagitanninswas examined between clones, species and sites. Similar studieswere made of cores from another trial of 20 half-sib familiesof parent trees deriving from five German forests. The resultsfrom both the clonal and progeny trials indicate that heartwoodellagitannin content and wood density are under strong geneticcontrol, while sapwood and heartwood colour are less so. A largeproportion of between-clone variation in wood density and ellagitanninlevels occurred between the two species, while these propertiesvaried little among ramets of the same clone grown on two contrastingsites, despite a difference in growth rates. A large proportionof the total variation among progeny was attributed to forestorigins and could not be attributed clearly to either geneticor environmental causes because of limitations of the samplingdesign |
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