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Interaction famille x site dans un test tristationnel de descendances de douglas (Pseudotsuga menziesii Mirb.) Franco

Abstract : The results given in this paper come from a multi-site provenance-progeny test with artificial french origins of Douglas-Fir (63 open-pollinated progenies). The ecological features of the three field trials are very different (fig. 1), each being however considered << normal>> for this species. Six traits are taken into account, most of them assessed at age 7 in the field, i.e. 10 years after the seed : total height, flushing, stem sinuosity, branch angle, forking, lamma shoot frequency (fig. 2). The aim is to reveal family x site interaction and to find a practical way of selecting stable-inspace progenies.Analysis of variance is performed at within and between-sites levels (models 1, 2, 3). Between sites, the contribution of each site and family to the overall interaction sum of squares is evaluated through its relative interactivity defined as the inverse of Wricke’s ecovalence (1962) (models 4 and 5). A synthetic interactivity is proposed to evaluate family stability for some traits simultaneously (model 6) when single-trait interactivities are independant.
Keywords : DOUGLAS
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  • PRODINRA : 85320

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Bernard Roman-Amat, Charles Eric Durel. Interaction famille x site dans un test tristationnel de descendances de douglas (Pseudotsuga menziesii Mirb.) Franco. Annales des sciences forestières, INRA/EDP Sciences, 1987, 44 (2), pp.189-210. ⟨hal-02725348⟩

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