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Middle-Upper Devonian And Lower Carboniferous Miospore Assemblages From Western Desert Of Egypt
(
Qatar University
, 1985 , Article)
Important morphological features of some spore assemblages from Middle-Upper Devonian and Lower Carboniferous of Western Desert of Egypt are described. Comparing the present assemblages with those obtained from other ...
Phyto-Ecological Observations In Northern Oman
(
Qatar University
, 1985 , Article)
The present study has evolved out of a limited field work during a short visit to Oman. It is an attempt to record more detailed data on the plant communities and their habitat features in three sectors of northern Oman. ...
17- Hydroxylation Of Progesterone By Cunninghamella Echinulata On A Laboratory Fermentor Scale
(
Qatar University
, 1985 , Article)
The mircrobiological transformation of progesterone by a local isolate of Cunninghamella echiiiulata using a laboratory fermentor was studied. Progresterone (10-50 g/1) wetted by Tween 80 was added to 48-hour old culture ...
Proline Accumulation In Plants Of Different Ecological Groups As A Response To Water Deficit
(
Qatar University
, 1985 , Article)
The diurnal changes in proline content were investigated in different plants including a desert shrub (Retama raetam), a halophytic grass (Spombolus virgimcus) and a cultivated crop (Zea mays). Though these species have ...
A comparative study of the effects of clumping, substrate, light, depth of burial and soil moisture upon the germination of seeds of weeds and crops grown in the sudan gezira.
(
Qatar University
, 1985 , Article)
The influence of the number of seeds per clump upon germination of oryza sativa L., Gossypium hirsutum L., Brachiaria eruciformis (Sm.) Griseb, Dinbera retroflexa (Vahl) Panz. and Echinochloa colonum (L.) Link was investigated ...
Botanical Exploration Of Sinai
(
Qatar University
, 1985 , Article)
The history of the botanical exploration of Sinai has been reviewed. It has been divided into the following periods:
I. Expeditions in the eighteenth century.
II. Exploration from 1800 till the publication of "Florula ...