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السجلات المعروضة 41 -- 50 من 77
Towards a prospective transplantation of the local mangrove avicennia marina (forssk.) Vierh. Growing on coast of qatar i. Ecophysiological performance of juveniles.
(
Qatar University
, 1990 , Article)
A population sample of propagules was collected at random from average size A. marina trees growing at "Dhakhira" (Qatar). This sample was then divided into subsamples which were used to detect the effects of light intensity, ...
Effect Of "Ethrel" On Colour Development And Juice Quality Of Sweet Oranges And Grapefruits
(
Qatar University
, 1994 , Article)
"Ethrel" was sprayed at 0,120, 420 and 480 ppm on sweet orange and grapefruit trees at fruit maturity stage to improve colouring and juice quality. Changes in fruit colour were observed in both varieties but the results ...
Mineral analysis of soil, euphorbia hirta l. And mycoflora from the industrial Yanbu City, Saudi Arabia
(
Qatar University
, 1995 , Article)
Soil and Euphorbia hirta L. samples were collected from five localities from the industrial Yanbu city Saudi Arabia, and analysed for their metal and fungal flora. Soil type is sandy, alkaline and contained low percentage ...
Studies On Plant Growth Regulators And Enzymes Production By Some Bacteria
(
Qatar University
, 1994 , Article)
Twenty four bacterial strains of thallobacteria belonging to genus Streptomyces were tested for their potentialities to produce plant growth regulators and some hydrolases in shake cultures. Seven strains namely; Streptomyces ...
Response of Nile Phytoplankton to Algicide (CuSO4, 5H2O) In Multispecies Chemostat Experiments
(
Qatar University
, 1994 , Article)
The addition of CuSO4 . 5H2O (algicide) to cultures of phytoplankton populations from the river Nile, grown under steady-state conditions using chemostat, resulted in remarkable alterations in species composition, total ...
Weed Communities Of Date Palm In Eastern Arabia
(
Qatar University
, 1992 , Article)
The present study deals with the recognition and description of the weed communities of date palm plantations in Al-Hassa Oasis, . Eastern Arabia. Thirty three communities are recognized. They are classified, after the ...
Evaluation of methods for screening of extracellular cellulase In filamentous fungi
(
Qatar University
, 1996 , Article)
Twenty-eight fungal species belonging to fifteen genera were isolated from Saudi Arabian soil and were screened for the production of extracellular cellulase enzymes. Cleared-zone technique, cellulose azure method and agar ...
Comparison of antibiotic susceptibilities of four species of coagulase-negative staphylococci isolated rom normal skin and acne Lesions: a statistical approach
(
Qatar University
, 1996 , Article)
Ten strains of each of four species of coagulase negative staphylococci: S. epidermidis, S. hominis, S. capitis, and S. cohnii isolated from both acne lesion and normal skin (total 80 strains) were tested for their antibiotic ...
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 ...
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 ...