Etude du Pollen des Plantes Spontanées dans la Wilaya de Ghardaïa

Abstract

Our study codsists of studyidg the Po ed of Slodtadeous P adts id the Ghardaïa Regiod duridg the f oweridg period (January to April . 2124 ) the pollination period. Neume out on 26 species from different stations following random sampling. The objective of this study is to construct knowledge of the biodiversity of pollen that grow spontaneously in this region. The results obtained allowed us to inventory 22 spontaneous species representing 16 botanical families, the most represented families are the Asteraceae and the Brassicaceae. After microscopic observation of the pollen grains we observed the following: Medium-sized pollens are the most dominant in the plants studied, the small size of which is observed in Emex Spinosa )29.37 μm(, while the largest is observed in Convolvulus supinus )063.63 μm(. The slherica lo ed form is the most domidated with a lercedtage of 59%. Pollens with smooth exines are the most abundant type in the plants studied. A very great diversity of apertures is detected in the lo eds with a domidadce of the madolorate add lerico lorate. This study is the first id the Ghardaïa regiod. Our study is considered as an overview of the field of ecology add coudts as the first study od slodtadeous l adts id the Ghardaïa regiod.