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The Architectural Unit Setting up and Architectural Characteristics of Néré, <i>Parkia biglobosa</i>, Jack, R. Br. (Fabaceae)

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American Journal of Plant Sciences 2022年第1期13卷 109-136页

作者： Beda Innocent Adji Doffou Sélastique Akaffou Véronique Letort Mengzhen Kang Xiujuan Wang Marc Jaeger Philippe De Reffye Kouadio Henri Kouassi Yao Patrice Houphouet Jerôme Duminil yves caraglio Sylvie Sabatier Université Jean Lorougnon Guédé UFR Agroforesterie Daloa C&#244 te d’Ivoire CIRAD UMR-botAnique et Modélisation de l’Architecture des Plantes et des végétations (AMAP) Montpellier France MICS CentraleSupélec-Université Paris-Saclay Gif-sur-Yvette France Key Laboratory of Management and Control for Complex Systems (CASIA-LMCCS) Institute of Automation Chinese Academy of Sciences Beijing China IRD UMR-DIADE Montpellier France

Parkia biglobosa is a much-loved and over-exploited African savannah species for its socio-economic importance. Knowing and taking into account its architectural unit, which is the basis for diagnosing phenology, productivity and tree health, could provide a new perspective on its sustainable management. The aim of this study is to establish the architectural development in Parkia biglobosa by retrospective analysis. To achieve this objective, 390 individuals of all sizes ranging from seedlings to senescent trees were observed and analysed under various soil and climatic conditions in Côte d’Ivoire. The results showed that Parkia biglobosa is a light plant but shading tolerant. It is a mixed vegetative axis plant, the stem is orthotropic* in its proximal part and plagiotropic* (collapsing) in its distal part in young stage. The tree then transitions to an adult and old stage into a tree with a plagiotropic* axis in the proximal and distal parts, the trunk is built up by superimposing collapsed relay axes that gradually straighten, branching is sympodial*, growth is defined and sexuality is terminal and lateral. The ontogeny takes place in three phases: initiation of development and establishment of the crown (young), then flowering and establishment of the architectural unity (adult) and finally the death of secondary axes in the crown, duplication of the architecture by a series of partial and total reiterations (old). The level of organisation is 5: the phytomere, the module or growth unit, the axis, the architectural unit and the reiterated complex. Retrospective analysis of the modules showed that the dimensions of the growth units are indicators of morphological variation and species adaptation to a changing climate (P R2 and

关键词： Parkia biglobosa Architectural Development Architectural Unit Côte d’Ivoire

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