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Evaluation et homologation de variétés issues des vergers à graines de l'Etat - programme 2018

Abstract : This report describes the work done in 2018 by Irstea, INRA, ONF and CNPF in the frame of a joint research program dedicated to seed orchard testing. Two species or groups of species were involved: Douglas-fir and larch. With regard to Douglas-fir, the data collected 5 years after planting in 24 trials have been synthesized, which represents an important step forward. The 8 French seed orchards do not differ for survival but some differ for height growth. It is interesting to notice that the ranking varies with the type of site: a seed orchard characterized by a poor growth in cool and moist environments performs better in hot and dry sites. In addition, analysis of data from 18 trials allowed us to improve our knowledge about the performance and ecological requirements of French orchards. For larch, the main result concerns the estimation of the performance of a seed orchard composed of F1-hybrids. This work resulted in the admission of this orchard to the national register of basic materials, in 'qualified' category, and in a first cone collection.
Keywords : DOUGLAS PROVENANCE
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https://hal.inrae.fr/hal-02608722
Contributor : Migration Irstea Publications Connect in order to contact the contributor
Submitted on : Saturday, May 16, 2020 - 4:45:05 PM
Last modification on : Wednesday, November 17, 2021 - 2:52:04 PM

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  • HAL Id : hal-02608722, version 1
  • IRSTEA : PUB00060290

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Gwenaël Philippe, Rémy Gobin, Yves Rousselle, S. Girard, S. Matz. Evaluation et homologation de variétés issues des vergers à graines de l'Etat - programme 2018. [Rapport de recherche] irstea. 2019, pp.181. ⟨hal-02608722⟩

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