Browsing Biological Sciences by Title
Now showing items 503-522 of 733
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The potential of bulk segregant analysis and RAPD technology for identification of molecular markers linked to traits in sugarcane.
(1998)The objective of the present study was to investigate the potential use of bulk segregant analysis (Michelmore et al., 1991) as a method to rapidly identify genetic markers linked to traits in sugarcane. Four bulked DNA ... -
Potential of established pastures in the winter rainfall region.
(1986)The seasonal production of 11 pastures was evaluated in dryland and irrigated trials at eight sites in the Winter Rainfall Region. These data were related to ... -
The potential of hot water treatments for curtailing seed-associated mycoflora.
(1995)The consequences of toxigenic fungi associated with stored seed have stimulated these investigations aimed at developing treatments to minimise this mycoflora, without significantly reducing seed quality or viability. ... -
The potential overlap in habitat space of caracal (Caracal caracal) and blue duiker (Philantomba monticola) in KwaZulu-Natal, South Africa : an environmental niche modelling approach.
(2016)According to the mesopredator release hypothesis, when apex predators disappear from an ecosystem, the number of mesopredators increase and thus predation of prey species increases. Since the extermination of large predators ... -
The potential use embryonic shoot apices as explants for cryopreservation of selected recalcitrant-seeded species.
(2017)Abstract available in PDF file. -
The potential use of sugarcane varieties for the identification of genetic markers.
(1996)The use of genetic markers that are linked to specific traits in sugarcane has the potential to increase the efficiency of the selection of improved varieties. Conventionally, markers are identified by analysing the ... -
A preliminary investigation into the status, distribution and some aspects of the foraging ecology of the southern ground hornbill (Bucorvus cafer) in Natal.
(1990)A study on the distribution, status and selected aspects of the foraging ecology of B. cafer in Natal, was undertaken from January 1989 to December 1990. A census was initiated to assess the distribution of B. cafer ... -
Prevalence and genetic relatedness of Besnoitia besnoiti isolates from different geographical regions of South Africa.
(2015)Bovine besnoitiosis is a protozoan disease caused by an apicomplexan parasite Besnoitia besnoiti and is reportedly re-emerging in Europe and occurring in many other countries including South Africa. The disease has long ... -
Prevalence of gastro-intestinal parasites of livestock and dogs and risk factors for transmission with emphasis on giardia and cryptosporidium in Magude district, Maputo province, Mozambique.
(2016)The main objective of this study was to determine the prevalence of gastrointestinal parasites and risk factors for transmission of Giardia and Cryptosporidium in livestock and dogs of Magude District, Maputo, Mozambique ... -
Production and economics of Arado and Barka cattle in Eritrea.
(2007)Grazing lands in Eritrea are degraded due to decades of overstocking and consequent overgrazing. Since the rangelands are accessible to entire village communities, organisation and coordinated decision making regarding the ... -
Production and physiological responses of Italian ryegrass and white clover grown in mono cultures and mixed stands.
(1993)The aim of this study was to test the hypothesis that ryegrass and clover, when grown under optimal conditions in mixed stands, interact in response to available light energy. with other resources non-limiting, pasture ... -
Production of hydroxyl radicals by lichens via extracellular hydroquinone-driven redox cycling.
(2016)Abstract available in PDF file. -
Proline biosynthesis in transgenic soybean plants.
(2000)Plants have evolved numerous strategies for the adaptation to drought. Although many investigations reported on the potential value of proline accumulation during environmental stress, it is still unknown whether or not a ... -
Promoters for sugarcane transformation : isolation of specific sequences and evaluation of rolC.
(1997)Increasing the sucrose yield and the disease resistance of plants are two major objectives of the transgenic sugarcane plant programme in South Africa. The sugarcane culm has thus been identified as one of the main target ... -
Propagation of Coleonema album (Thunb.) Bartl. & J. C. Wendl. : a horticultural and medicinal plant.
(2012)Coleonema album is a South African green treasure, endemic to the Cape region and hard to find in other parts of the country. It is ranked among the most highly utilized medicinal plants at present. The plant extracts ... -
Propagation of Romulea species.
(2012)Romulea is a genus with numerous attractive and endangered species with horticultural potential. This genus in the Iridaceae has its centre of diversity in the winter-rainfall zone of South Africa. This thesis uses ... -
Prostaglandin-synthesis inhibitory activity from the leaves of Siphonochilus aethiopicus used in the treatment of dysmenorrhoea.
(1999)Plants used by southern African traditional healers for the treatment of menstrual pains were screened for prostaglandin-synthesis inhibitors and the ability to reduce isolated uterine muscle contraction using the ... -
Proximate factors influencing dispersal in the social spider, Stegodyphus mimosarum (Araneae, Eresidae)
(2002)Stegodyphus mimosarum Pavesi,1883 and S. dumicola Pocock, 1898 are two species of philopatric, inbred, permanently communal, non-territorial spiders that co-occur in parts of South Africa. The patchiness of colony distribution, ... -
Pyrophosphate dependent phosphofructokinsase (PFP) activity and other aspects of sucrose metabolism in sugarcane internodal tissues.
(1997)The biochemical basis for the regulation of sucrose accumulation is not fully understood. The present study was thus aimed at investigating aspects of 'coarse' (enzyme activity) and 'fine' (metabolite) control of glycolytic ... -
Radical veld improvement in South Africa with special reference to the Highland sourveld of Natal.
(1970)No abstract available.