Authors:
Pape Ibrahima Djighaly*, Seydou Ndiaye, Joseph Saturnin Dieme, Fatou Dieng, Moustapha Gueye,Arlette Zaiya Zazou, Amadou Mbarrick Diarra and Fode Amata Drame ,Cameroun |
Abstract:
The adaptation of Anacardium occidentale L. to water deficit conditions has become essential in
the context of climate change in Casamance, Senegal. Water deficit is one of the main causes
that strongly affect the productivity of woody species. Thus, the promotion of tolerant varieties
that can withstand the uncertainty of rainfall and its deficits is a solution to adapt to the effects of
climate change.
The study of the tolerance of four provenances of Anacardium occidentale L under drought stress
conditions (12.5%, 25%, 50% and 100% of field capacity) was carried out in a semi-controlled
environment. The measurement of height, total dry biomass, collar diameter and root length and
relative water content, allowed us to obtain the results on the growth and physiological reactions
of Anacardium occidentale provenances under water stress. At a high level of drought stress
(12.5%), the best growth was obtained with plants from the Ziguinchor provenance, which had
higher survival rates, heights, collar diameters and relative water content than the Kolda, Sédhiou
and Goudomp provenances. These results show that the Ziguinchor plants provenance is more
tolerant to water stress than the other provenances tested. This study recommends the use of the
Ziguinchor Anacardium occcidentale provenance to fight against the effects of climate change in
Casamance (Senegal). |
