Now showing items 31-40 of 53
Towards improved livestock production off sweet grassveld.
No abstract available.
An assessment of Coastcross II Bermudagrass and kikuyu for growing out young beef animals.
The immediate aim of this study was to relate herbage availability, liveweight gain and stocking rate to one another under continuous and rotational grazing so that management recommendations could be formulated for ...
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 ...
Tissue culture of selected indigenous monocotyledons.
Components of the South African indigenous flora are disappearing at an alarming rate, due to pressures on land use. The flora is protected by proclamation of reserves and conservation legislation, however these measures ...
The role of cytokinins in the regulation of apical dominance in Pisum sativum.
Intact or decapitated Pisum sativum seedlings were used to investigate the correlative inhibition of lateral buds by the shoot apex - a developmental process known as apical dominance. Apical dominance is considered to ...
Achene biology and the chemical control of Chromolaena odorata.
Abstract viewable in PDF document.
A study of the marine phytoflagellate Pyramimonas pseudoparkeae Pienaar et Aken (Prasinophyceae)
The morphology and structure of P. pseudoparkeae is described in detail. The alga resembles other species in the genus but is most closely related to P. parkeae being separated from it by differences in scale ...
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 regulation of root development by aluminium in Zea mays L.
This investigation confirmed that plant reaction to Al was directed through the disruption of intercellular co-ordination existing between the cell populations comprising the root meristem. The first detectable response ...
The regulation of phytoplankton productivity in a shallow, turbid, oligotrophic lake.
Aspects of the physical and chemical environment likely to influence phytoplankton productivity were investigated in Lake Midmar, a shallow (mean depth 11.4m), oligotrophic impoundment, over a three year period to ...