Now showing items 1-10 of 11
The biochemical and cytokinin changes in the developing and germinating seeds of Podocarpus henkelli stapf.
A review of the literature revealed that there is a lack of depth in our knowledge of gymnospermous seeds with regard to the development and germination processes. The phytohormones, particularly the cytokinins have ...
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 ...
Physiological aspects of shoot growth regulation in juvenile and adult Citrus sinensis (L.) Osbeck.
As the requirements for more efficient and economical crop production emerge, so the need for a better understanding of plant growth and development is felt. It is especially the need to understand means by which man may ...
Dormancy and germination of the Manketti nut, Ricinodendron rautanenii.
The distribution of Ricinodendron rautanenii trees is confined to a fairly distinct band across southern Africa. This stretches from South West Africa in the west, through Botswana and Zimbabwe, to Mozambique in the ...
A study of the blackshouldered kite Elanus caeruleus.
No abstract available.
A revision of the genus Ancilla Lamarck, 1799 (Mollusca : Olividae : Ancillinae)
The genus Ancilla Lamarck, 1799, contains 34 valid species and subspecies; 41 names previously applied to the group are reduced to 23, and 11 new species described (Kilburn, 1977, 1980, 1981). A provisional subgeneric ...
Tissue culture studies on Peperomia clusifolia Hook. and Strongylodon macrobotrys A. Gray.
Tissue culture studies were carried out on two ornamental plant species, Strongylodon macrobotrys A. Gray and Peperomia clusifolia Hook. Successful in vitro regeneration of plantlets was achieved in the latter species, using ...
Aspects of the biology of the caracal (Felis caracal Schreber, 1776) in the Cape Province, South Africa.
Felis caracal, despite heavy hunting pressure, is common and widespread throughout the Cape Province. Caracal are considered to be the principal wild predator of domestic livestock (goats and sheep) by most farmers ...
Social ecology of Otomys irroratus, Rhabdomys pumilio and Praomys natalensis.
This work sets out to describe the socio-ecological niches of otonya irroratus, Rhabdomys pumilio and Praomys natalensis in the Natal midlands. This objective necessitated a broad-based approach in which aspects of ...