Now showing items 21-30 of 64
An investigation into in vitro culture and phytochemical aspects of some members of the order Cycadales.
The present-day cycads represent the diverse, modified remnants of a much larger group of gymnosperms which flourished in the Mesozoic Era. The approximately 148 surviving species of the Cycadales are sparsely distributed ...
Achene biology and the chemical control of Chromolaena odorata.
Abstract viewable in PDF document.
Adventitious rooting in stem cuttings of Eucalyptus grandis Hill ex Maid.
Adventitious rooting in stem cuttings of Eucalyptus grandis Hill ex Maid. was thought to be influenced by a putative inhibitor. In previous studies it has been usual to infer the presence of putative rooting inhibitors ...
The physiology of flowering with contributions by in vitro techniques.
Abstract cannot be copied from pdf document.
Transport and metabolism of 8(14C)t-Zeatin.
A review of the literature established that there were areas of cytokinin transport which needed further investigation, in order to determine the function and/or mode of action of cytokinins during certain stages of plant ...
Canine anti-endotoxin immunotherapy in cranial mesenteric arterial occlusion shock and canine parvovirus disease endotoxaemia.
Endotoxin (LPS, lipopolysaccharide) forms an integral part of the outer cellular membrane of gram negative bacteria (GNB). The canines' intestine always contains large amounts of GNB, and hence LPS. If these GNB with ...
Biological studies of bottlenose dolphins from Natal coastal waters.
The biology of bottlenose dolphins from the east coast of southern Africa is investigated. Births occur predominantly in summer, after a one year gestation period. Calves are born at a length of approximately 103 cm and ...
Aspects of the ecology and exploitation of the fishes of the Kosi Bay system, KwaZulu, South Africa.
ln this study the exploitation of the fish fauna of the Kosi estuarine system by man and natural predators is described and estimates made of the off-take and its species composition. The most important ...
Beef production from kikuyu and Italian ryegrass.
Four grazing trials to characterise cultivated pastures, in terms of beef production, were conducted in Bioclimate 3 of Natal. Dual purpose and British beef type cows were run on kikuyu at stocking rates ...
Ecological effects of fire in the montane grasslands of Natal.
Although controlled burning has been used to manage Highland Sourveld grasslands, little was known of its effects on the vegetation. This study examined the effects of past fire treatments on veld condition,species ...