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Titre :
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Inter- and intra-specific variation in European oaks: evolutionary implications and practical consequences
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Auteurs :
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A. Kremer ;
Workshop on Inter- and intra-specific variation in European oaks: evolutionary implications and practical consequences, Bruxelles, BEL, 15-16 juin 1994 (1994; BEL) ;
H. Muhs
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Type de document :
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congrès/colloque
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Editeur :
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Luxembourg, LUX : Office for official publications of the european communities, 1996
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ISBN/ISSN/EAN :
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92-827-5993-8
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Format :
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379 p.
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Note générale :
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Agro-industrial research division DGXII-E.2
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Langues:
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= Anglais
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Catégories :
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Biologie végétale - Génétique
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Mots-clés:
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VARIABILITE GENETIQUE
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QUERCUS ROBUR
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QUERCUS PETRAEA
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QUERCUS CERRIS
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QUERCUS CRENATA
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QUERCUS SUBER
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GENETIQUE DE POPULATION
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RESISTANCE A LA TEMPERATURE
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PHENOLOGIE
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MORPHOLOGIE
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HYBRIDATION
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IDENTIFICATION
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DETERMINATION D'ESPECE
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Résumé :
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The European Commission supported a research project (programme FOREST) entitled : " Description of genetic variation in oak populations by means of molecular markers and adaptive traits" (project MA2B-CT91-0022) which lasted from 1991 to 1993. Seven laboratories from four countries have assessed molecular traits (isozymes, nuclear and cytoplasmic DNA) as well as adaptive features (phenology of bud burst and bud set, frost resistance). This methodology was applied to a sample of populations covering a large part of the natural distribution of the species. The contractors of the project felt that the results obtained within the framework of the project deserved to be shared with an extended scientific community than merely oak geneticists because of their practical consequences and their evolutionary implications and therefore decided to organize a workshop where these issues would be discussed. Thirty seven participants from eleven countries took part in the workshop which was held in Brussels on 15 and 16 June, 1994. Comparisons of data obtained with various complementary characters lead to important results about the evolutionary history of the two major species, Q. robur and Q. petraea. But they also lead to important practical cconsequences that address (1) species indentification, (2) seed stand certification and (3) seed transfer. Since these consequences may affect sylvicultural practices in natural and artificial regeneration regimes, they need to be discussed between geneticists and sylviculturists. The results also imply future investigations (conservation of gene resources, gene flow between species, assessments of east European populations) that need to be initiated. The objectives of the workshop were to (1) present the results to population geneticists, tree breeders, sylviculturists and legislators involved in oak research and (2) to discuss their pratical consequences in sylviculture and management of oak stands and (3) to specify future investigations.
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