Browsing by Author "Sayed, O. H. [اسامة هنداوي سيد]"
Now showing items 1-6 of 6
-
Appraisal into Phytochemistry and Taxonomy of an Old Plant Collection from The Middle East
Sayed, O. H. [اسامة هنداوي سيد] ( Qatar University , 1997 , Article)The English traveller Richard Pococke (1704 -1765) visited the Middle East during the period 1737-1740 and collected medicinal plants from localities in Egypt and Arabia. This collection gave a description of the Middle ... -
Condition and trend of a depression-type habitat In rainfed desert rangelands of Qatar In response to fertilizer application
Sayed, O. H. [اسامة هنداوي سيد] ( Qatar University , 1994 , Article)Characteristics of a rainfed depression-type habitat in desert ranges, and its response to fertilizer application were studied. A single fertilizer application at a rate of 75 Kg ha1 prior to the rainy season improved range ... -
Ecophysiological Characteristics, Distribution, and Nutritional Value of Desert Range Plants in Qatar
Sayed, O. H. [اسامة هنداوي سيد] ( Qatar University , 1993 , Article)Despite the scarcity of water, desert ranges of Qatar can support a characteristic diversity of species and an all-year-round supply of feed. A correlation between carbon dioxide fixation mechanism, distribution of species, ... -
Edaphic Gradients And Species Attributes Influencing Plant Distribution In Littoral Salt Marshes Of Qatar
Sayed, O. H. [اسامة هنداوي سيد] ( Qatar University , 1994 , Article)Edaphic gradients of moisture and salinity are critical environmental stresses that seriously influence littoral salt marsh flora, and determine the zonation of coastal vegetation. Shoreline communities subjected to severe ... -
Effects of the expected sea level rise on avicennia marina L: a case study in Qatar
Sayed, O. H. [اسامة هنداوي سيد] ( Qatar University , 1995 , Article)A simulation of the expected sea levels rise was carried out by imposing a state of protracted flooding on seedlings of the mangrove species Avicennia marina L. under natural conditions. The imposed flooding resulted in ... -
Nature Of The Aflatoxin B, - Induced Inhibition Of Photosynthesis In Chlorella Fusca (Chlorococcales, Chlorophyta)
Sayed, O. H. [اسامة هنداوي سيد]; Wilson, S. ( Qatar University , 1994 , Article)Treatment with Aflatoxin E^ (AFBi) resulted in inhibition of photosynthetic oxygen evolution in Chlorella fusca Shih.et Krauss. Treatments also induced a marked reduction of both chlorophyll and carotenoid contents. ...