Centre for Genetic Resources, the Netherlands Use and Improvement of Larch in the Netherlands TREEBREEDEX meeting Hann. Münden, Germany 25-26 March 2009.

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Presentation transcript:

Centre for Genetic Resources, the Netherlands Use and Improvement of Larch in the Netherlands TREEBREEDEX meeting Hann. Münden, Germany March 2009 Sven M.G. de Vries Alterra, Wageningen

Centre for Genetic Resources, the Netherlands Facts & figures of Larch in The Netherlands ha covered with forest = app. 12% area NL ha covered with Larch= app. 6% forest area NL (European, Japanese & Hybrid Larch) NL not within the distribution range of Larch Most Larch forest is planted Majority with imported plant material (mostly Japan, Germany, Slovakia & NL) Interest in Larch is decreasing (conifers in general)

Centre for Genetic Resources, the Netherlands Larch in The Netherlands Significant tree species in the 60s and 70s Imported FRM + little NL Wood production Selection & Breeding activities in Larch

Centre for Genetic Resources, the Netherlands Selection & Breeding activities in Larch History of improvement work started in early 1949 Phenotypical selection of stands 1949 First Provenance trials in 1955 First list of selected stands 1967 First Hybrid Larch seed orchard since 1969 (2 ha in production since 1975) Second seed orchard in 1971 (1 ha) First tested material 1995

Centre for Genetic Resources, the Netherlands Selection & Breeding activities in Larch individual plus trees selected in Dutch (seed) stands, provenance & progeny trials Japanese and European Larch Open pollinated/controlled crossings -> nursery testing & comparative trials Early selection basis for first generation Hybrid larch seed orchards Based on flower phenology, survival and growth

Centre for Genetic Resources, the Netherlands Future strategies In the 90’s interest collapsed Until now both seed orchards still more or less in operation Recently discussion on re-establishment of one Hybrid larch seed orchard identical to first one Need for seed not the reason, but conservation of genotypes for “better” times

Centre for Genetic Resources, the Netherlands Larch in The Netherlands Thank you for your attention!