Morphological trait variation and relationships of Afzelia africana Sm. caused by climatic conditions and anthropogenic disturbance in Benin (West Africa)

Afzelia africana Sm. is a tree species found in different climatic conditions affected by chronic human disturbance. It is known that trees can respond to their environments by changing their morphological traits. Also, as plants store their reserves in fruits, seeds and leaves, long-lasting disturb...

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Veröffentlicht in:Genetic resources and crop evolution 2019-06, Vol.66 (5), p.1091-1105
Hauptverfasser: Houehanou, Thierry D., Prinz, Kathleen, Hellwig, Frank, Assogbadjo, Achille E., Gebauer, Jens, Glele Kakaï, Romain L., Sinsin, Brice
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container_end_page 1105
container_issue 5
container_start_page 1091
container_title Genetic resources and crop evolution
container_volume 66
creator Houehanou, Thierry D.
Prinz, Kathleen
Hellwig, Frank
Assogbadjo, Achille E.
Gebauer, Jens
Glele Kakaï, Romain L.
Sinsin, Brice
description Afzelia africana Sm. is a tree species found in different climatic conditions affected by chronic human disturbance. It is known that trees can respond to their environments by changing their morphological traits. Also, as plants store their reserves in fruits, seeds and leaves, long-lasting disturbance may impact morphological traits of fruits, seeds and leaves. Thus, in this study, we evaluated (1) the variation of morphological traits of A. africana according to climatic conditions and human disturbance, and (2) the relationships among morphological traits. Twelve morphological parameters based on fruits, seeds and leaflets were assessed across three climatic zones and compared for individuals in protected and disturbed landscapes. Univariate and multivariate analyses were used to evaluate the effects of climatic factors and disturbance. Highest values for fruit, seed and leaflet traits were observed in humid areas indicating for best performance under optimal conditions. Significant adverse effects of human disturbance were observed for traits in the humid and drier areas. The interaction between climatic conditions and disturbance was significant for most traits suggesting a climate-dependent effect of the disturbance on evaluated traits. Bioclimatic variables were thus identified as potential drivers of traits. Some significant and positive associations were observed among fruit and seed traits. These morphological trait variations are valuable insights to guide sustainable management and conservation of A. africana populations in different climatic zones and habitats types in Benin.
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It is known that trees can respond to their environments by changing their morphological traits. Also, as plants store their reserves in fruits, seeds and leaves, long-lasting disturbance may impact morphological traits of fruits, seeds and leaves. Thus, in this study, we evaluated (1) the variation of morphological traits of A. africana according to climatic conditions and human disturbance, and (2) the relationships among morphological traits. Twelve morphological parameters based on fruits, seeds and leaflets were assessed across three climatic zones and compared for individuals in protected and disturbed landscapes. Univariate and multivariate analyses were used to evaluate the effects of climatic factors and disturbance. Highest values for fruit, seed and leaflet traits were observed in humid areas indicating for best performance under optimal conditions. Significant adverse effects of human disturbance were observed for traits in the humid and drier areas. The interaction between climatic conditions and disturbance was significant for most traits suggesting a climate-dependent effect of the disturbance on evaluated traits. Bioclimatic variables were thus identified as potential drivers of traits. Some significant and positive associations were observed among fruit and seed traits. 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subjects Afzelia africana
Agriculture
Anthropogenic factors
Bioclimatology
Biomedical and Life Sciences
Climatic conditions
Climatic zones
Disturbance
Fruits
Human influences
Humid areas
Leaves
Life Sciences
Morphology
Plant Genetics and Genomics
Plant Physiology
Plant Sciences
Plant species
Plant Systematics/Taxonomy/Biogeography
Research Article
Seeds
Sustainability management
Variation
title Morphological trait variation and relationships of Afzelia africana Sm. caused by climatic conditions and anthropogenic disturbance in Benin (West Africa)
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