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السجلات المعروضة 61 -- 70 من 77
Incidence and characterization of bacillus cereus isolated From egyptian foods.
(
Qatar University
, 1993 , Article)
In this study, 178 strains of Bacillus cereus were isolated from different Egyptian foods. Isolation was performed, using MYP and PEMBA media and confirmed by staining and biochemical tests. B. cereus occurred in 98% of ...
Response of Date Palm Pollen Tube Growth to Storage Period and Conditions
(
Qatar University
, 1994 , Article)
The growth rate of pollen tube of date palm (Pheonix dactylifera L.) pollen grains stored either freeze-dried or unfreeze-dried at 25, 4 and - 8°C was measured after 3,7 and 12 months of storage. The growth of pollen tube ...
Cytology and palynology of common monocots in mariut, egypt i. Common species of the families alliceae and liliaceae
(
Qatar University
, 1994 , Article)
The present sludy includes cytological and palynological investigations of five species belonging to the families Alliaceae and Liliaceae, as an impetus for more in-depth floristic, taxonomic and phytogeographical ...
Age Environmental Factors, Germination And Seedling Emergence Of Ocimum Basilicum L
(
Qatar University
, 1990 , Article)
Fresh and exhumed seeds of Ocimuni basilicum L. gave 100 % germination at 13/11-h alternating temperature of 20/10, 32/18, 38/24 and 40/32 °C but did not germinate at constant temperatures. Germination was prevented in the ...
A critical analysis of "harvest index"
(
Qatar University
, 1993 , Article)
The many ways in which harvest index ratio (HI) can be used are discussed. A selection of published values for HI are given. Attention is drawn to the confusion in calculating the HI such that some present methods of ...
Inherritance of growth and other agronomic traits in two oat (avena sativa l.) Crosses
(
Qatar University
, 1990 , Article)
Evaluating the inheritance of growth traits should assist plant breeders in determining
its usefulness as a selection criterion for grain yield improvement. Three oat cultivars,
'Stout', 'Lodi' and 'Marathon' were chosen ...
Toxicity of Cobalt and Nickel to Fusarium Solani Isolated From Saudi Arabian Soil
(
Qatar University
, 1994 , Article)
Fusarium solani isolated from Saudi Arabian soil was able to grow on liquid media containing up to 300 ug/ml cobalt or nickel. F. solani was tolerant to cobalt than nickel. The results provide evidence of the accumulation ...
Pullulan production from sugar beat molasses
(
Qatar University
, 1997 , Article)
Sugar beet molasses was used as the substrate for the production of pullulan with Aureobasidum pullulans ATCC 42023. In addition biomass, residual sugar and final pH of the culture medium were investigated. In comparing ...
Plant growth, metabolism and adaptation in relation to stress conditions XII. Carbohydrate and acid accumulation in phaseolus vulgaris and zea mays stressed with sodium sulphate
(
Qatar University
, 1990 , Article)
Phaseolus vulgaris and Zea mays seedlings and plants were cultured on quarter-strength Hoagland nutrient medium with or without increasing concentrations of Na^SO^. Sodium sulphate increased the levels of reducing sugars ...
Physiological growth analysis of the life-history of calotropis procera (AIT.) AIT. F.
(
Qatar University
, 1992 , Article)
Growth of Calotropis procera was analysed by distribution of dry weight throughout the plant at various stages in growth. Dry biomass, leaf area index, specific leaf area, leaf weight ratio, leaf area ratio, net assimilation ...