The large carpenter bees (Xylocopinae, Xylocopa Latreille) occurring in central Saudi Arabia are reviewed. Two species are recognized in the fauna, Xylocopa (Koptortosoma) aestuans (Linnaeus) and Xylocopa (Ctenoxylocopa) sulcatipes Maa. Diagnoses for and keys to the species of these prominent components of the central Saudi Arabian bee fauna are provided to aid their identification by pollinati...

dates fruit has been used as staple food in the middle east for thousands of years and various types of dates are found worldwide. dates and their constituents show various roles in diseases prevention and treatment through anti-oxidant, anti-inflammatory, anti-bacterial activity. in the present study we investigated the activity of aqueous and n-hexane extracts of phoenix dactylifera l. fruit ...

The amplified fragment length polymorphism (AFLP) technique was applied to identify palm varieties. Fluorescence labelled primers were used in selective amplifications and the amplified fragments were detected on capillary gel electrophoresis using an automated DNA sequencer with the analysis fragment option. This is a rapid and efficient technique for detecting a large number of DNA markers on...

fusarium oxysporum f. sp. albedinis (foa) is a soil borne fungus causing the most serious disease of date palm (phoenix dactylifera l.) called “bayoud”. in the present study, five medicinal plants from the algerian sahara (southwest of algeria): limoniastrum feei (aerial part, roots), launeae arborescens (batt.) murb. (aerial part, roots), fredolia aretioides moq. et coss. (aerial part, roots),...