摘要
Interpretation of primary growth markers (modules) is neglected in sustainable resource management processes, yet it opens up prospects for long time series on tree crown development, necessary for their characterization in the current context of climate change. This study aimed to assess the morphological variation of crown shoots in <i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;"> in the face of a changing environment. Axis growth modules of 420 individuals of different ages were retrospectively analyzed in the presence or absence of shading during the wet and dry seasons in seven localities in Cote d’Ivoire. The results showed that the developmental environment of individuals did not influence the growth modules dimensions (P > 0.05). However, module size remained significantly different between locations (P < 0.05). The southern part of the gradient is still favourable and has priority for the establishment of permanent plots. The modules morphology differs from the youngest to the oldest individuals (P < 0.05). The rainy season remains the ideal period for the implementation of agroforestry reforestation programmes based on this species (P < 0.05). </span><i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;"> is a monochasial sympod (Pseudo-monopod) with a relay axis that follows the Paul Champagnat architectural model in the young stage, and transits to the Wilhelm Troll model later in the adult and old stage. This information contributes to the understanding of the functioning of crown and the adaptation of this species to a varying environment. It could guide choice of suitable environment and ideal genotype for the implementation of a reforestation or agroforestry programme based on </span><i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;">.</span>
Interpretation of primary growth markers (modules) is neglected in sustainable resource management processes, yet it opens up prospects for long time series on tree crown development, necessary for their characterization in the current context of climate change. This study aimed to assess the morphological variation of crown shoots in <i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;"> in the face of a changing environment. Axis growth modules of 420 individuals of different ages were retrospectively analyzed in the presence or absence of shading during the wet and dry seasons in seven localities in Cote d’Ivoire. The results showed that the developmental environment of individuals did not influence the growth modules dimensions (P > 0.05). However, module size remained significantly different between locations (P < 0.05). The southern part of the gradient is still favourable and has priority for the establishment of permanent plots. The modules morphology differs from the youngest to the oldest individuals (P < 0.05). The rainy season remains the ideal period for the implementation of agroforestry reforestation programmes based on this species (P < 0.05). </span><i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;"> is a monochasial sympod (Pseudo-monopod) with a relay axis that follows the Paul Champagnat architectural model in the young stage, and transits to the Wilhelm Troll model later in the adult and old stage. This information contributes to the understanding of the functioning of crown and the adaptation of this species to a varying environment. It could guide choice of suitable environment and ideal genotype for the implementation of a reforestation or agroforestry programme based on </span><i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;">.</span>
作者
Beda Innocent Adji
Doffou Sélastique Akaffou
Kouadio Henri Kouassi
Yao Patrice Houphouet
Jerôme Duminil
Sylvie Sabatier
Beda Innocent Adji;Doffou Sélastique Akaffou;Kouadio Henri Kouassi;Yao Patrice Houphouet;Jerôme Duminil;Sylvie Sabatier(Université Jean Lorougnon Guédé, Agroforestry UFR, Daloa, Cote d’Ivoire;CIRAD, UMR AMAP, Montpellier, France;AMAP, Université Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France;IRD, UMR-DIADE, Montpellier Cedex 5, France;DIADE, Université Montpellier, CIRAD, IRD, Montpellier, France)
