Pollen Analysis of the Honeys Samples Produced in the Three Phyto-géographical Zones of Benin
François Ezin Azonwade, Armand Paraïso, Monique G. Tossou, Haziz Sina, Aude Eminsede Kelomey, Kamirou Chabi-Sika, Lamine Baba-Moussa
Abstract : The
aim of this work was the melissopalynologycal analysis of the honey samples
collected both during the dry and rainy seasons of the three phyto-geographical
zones of Benin. The analysis was performed by conventional methods on 60 honeys
samples. The total of 138 taxa have been identified at family level (31), genus
level (20) and to the level species (87). The number of pollens counted varies
according to the phyto-geographical zones. Thus, 17091 pollens have been
counted in the samples of the Sudanian zone; 13884 in those of the
Sudano-Guinean zone and 7960 pollens in those of the Guinean zone. The pollen
content of the honey samples reflects the plant species of the three
phyto-geographical zones. The most dominant plant taxa were Combretaceaes
(26.01%) and Parkia biglobosa (10.67%) in Sudanian zone, Combretaceae (29.52%)
in SudanoGuinean zone. In the Guinean zone, the dominant taxa were Zea mays
(18.35%) and Terminalia (15.34%). The specific richness varies from 6 to 43 in
the Sudanian zone, from 7 to 34 in the Sudano-Guinean zone and from 1 to 28
taxa in the Guinean zone. None of the density of the dominant pollens reached
45%, thus all the analyzed honeys are polyfloral.
Keywords:
Honeys - pollens - phytogeographical zones - Vegetation – Benin
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