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Les vergers à graines de douglas français : une composante majeure du programme d'amélioration vers une organisation européenne coopérative

Abstract : In France, most of the Douglas-fir seed orchards were planted during the 70-80s. They are the direct products of the breeding program of this period. This program changed in 1985 when it was decided to go back to the natural aera in order to build long term breeding populations. The genetic basis of these populations differs from that of the seed orchard production populations. Nevertheless breeding work is going on in the seed orchards : multisite evaluation of GCA of seed orchard clones, thanks to controlled crosses, will allow genetic thinnings in the orchards, supplemental mass pollination with top pollen, and possibly establishment of new seed orchards with elite clones. Research supplies being limited, we must coordinate breeding work in these two sets of populations. For this purpose, a multiline scheme is proposed. As for variety engineering, intensive management of the seed orchards requires further research in the fields of economics of flower stimulation, pollen technology, control of cone and seed pest populations, pruning.
Mots-clés : CEMAGREF FRANCE
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Conference papers
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https://hal.inrae.fr/hal-02581974
Contributor : Migration Irstea Publications <>
Submitted on : Thursday, May 14, 2020 - 9:27:26 PM
Last modification on : Tuesday, February 16, 2021 - 12:09:48 PM

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  • HAL Id : hal-02581974, version 1
  • IRSTEA : PUB00012417

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B. Héois, Monique Guibert, G. Philippe, Nicolas Schermann, J.C. Bastien. Les vergers à graines de douglas français : une composante majeure du programme d'amélioration vers une organisation européenne coopérative. Joint meeting of the IUFRO working parties S2.02.05,06,12 and 14 (Douglas-fir Pinus contorta Sitka spruce and Abies) : evolution of breeding strategies for conifers from the Pacific Northwest, Limoges, 1-4 August 1995, 1995, Limoges, France. pp.11. ⟨hal-02581974⟩

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