{"id":122189,"date":"2021-07-21T14:19:39","date_gmt":"2021-07-21T12:19:39","guid":{"rendered":"https:\/\/uniavisen.dk\/en\/event\/oulimata-diatta-ign-defends-her-thesis-at-the-section-of-forest-nature-and-biomass\/"},"modified":"2021-07-21T14:19:39","modified_gmt":"2021-07-21T12:19:39","slug":"oulimata-diatta-ign-defends-her-thesis-at-the-section-of-forest-nature-and-biomass","status":"publish","type":"event","link":"https:\/\/uniavisen.dk\/en\/event\/oulimata-diatta-ign-defends-her-thesis-at-the-section-of-forest-nature-and-biomass\/","title":{"rendered":"Oulimata Diatta, IGN, defends her thesis at the section of Forest, Nature and Biomass"},"content":{"rendered":"<p>Oulimata Diatta defends her thesis:<\/p>\n<p><strong>Variation among Acacia senegal (L) Willd trees of different\u00a0genetic origins in relation to climatic adaptation<\/strong><\/p>\n<p><a href=\"https:\/\/ucph-ku.zoom.us\/j\/62253671399\">Zoom<\/a><\/p>\n<p><strong>Supervisors:<\/strong><br \/>\nProfessor Erik Dahl Kj\u00e6r, SNB, UCPH<br \/>\nAssociate Professor Anders R\u00e6bild, SNB, UCPH<\/p>\n<p><strong>Assessment Committee:<\/strong><br \/>\nHead of Unit Heino Konrad, Bundesforschungszentrum F\u00fcr Wald, Austria<br \/>\nPrincipal Scientist Jules Bayala, World Agroforestry Center<br \/>\nHead of Research Lars Graudal (Chair), SNB, UCPH<\/p>\n<p><strong>Summary:<\/strong><br \/>\nAcacia senegal (L) Willd. is a species of major ecological and socio-economical importance, widely distributed in parts of dry tropical regions of Africa and Asia. The species has received increased interest due to its derived gum arabic, drought tolerance, wide distribution, presence of multiple levels of ploidy and ability to fix nitrogen. To enhance knowledge on degree of genetic variation among populations in A. senegal with a view to its domestication and management in Sahelian area, common garden trials in Senegal were studied in order to understand the morphological and phenological responses associated with the adaptation of the\u00a0species to dry conditions. The study revealed three levels of ploidy namely diploid (2n), triploid (3n) and tetraploid (4n), but at highly different frequencies among populations. Leaf morphology and isotopic discrimination in A. senegal varied according to ploidy level and geographic origin. Variation among provenances in survival, height and diameter was significant, and differences could be partly explained by the climate at their site of origin. The phenology in A. senegal is also under genetic control with significant differences observed among populations and ploidy levels. Overall, the present thesis demonstrated that A. senegal across Africa consist of provenances that are genetically differentiated in their leaf morphology, phenology and growth, and these differences most likely reflects adaptation to local climatic conditions. The implication for sustainable use and management of genetic resources of the species is discussed with focus on domestication and conservation given the uncertain future climate.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Oulimata Diatta defends her thesis: Variation among Acacia senegal (L) Willd trees of different\u00a0genetic origins in relation to climatic adaptation Zoom Supervisors: Professor Erik Dahl Kj\u00e6r, SNB, UCPH Associate Professor Anders R\u00e6bild, SNB, UCPH Assessment Committee: Head of Unit Heino Konrad, Bundesforschungszentrum F\u00fcr Wald, Austria Principal Scientist Jules Bayala, World Agroforestry Center Head of Research [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":122190,"template":"","class_list":["post-122189","event","type-event","status-publish","has-post-thumbnail","hentry","event_category-phd-thesis-defense"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - 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