Browsing Botany by Title
Now showing items 198-217 of 261
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The role of meta-topolins on the physiology of micropropagated 'Williams' bananas (Musa spp. AAA)
(2012)Banana production ranks fifth behind cereals as a food crop and has potential, along with other major crops, to feed the world's increasing population. Globally, continuous efforts and techniques including the use of plant ... -
The role of overstorey proteoid shrubs in maintaining species richness in a southern Cape mountain fynbos community.
(1996)This study was conducted to determine if, and how, over storey proteoid shrubs affect the species richness of a southern Cape mountain fynbos community. Protea eximia, P. lorifolia and P. repens were the dominant ... -
The role of Potamogeton crispus L. in the Pongolo River floodplain ecosystem.
(1984)1. Aquatic macrophytes generally dominate energy and nutrient transfers in wetland ecosystems. They provide a diverse habitat for other organisms but each species or life-form, has a different role in determining ecosystem ... -
Screening of traditionally used South African medicinal plants against Candida albicans.
(2003)Candida species were discovered more than a century ago as a causative organism of oral thrush. In HIV patients, the presence of oral candidiasis has been shown to be the earliest opportunistic infection. Candidiasis ... -
Seasonal pharmacological and phytochemical properties of medicinal bulbs.
(2010)Medicinal bulbs form part of the diversified flora in South Africa. The plants are used extensively in South African traditional medicine in the treatment of various ailments. Due to the ever-increasing demand and the ... -
The secretory apparatus of Ceratotheca triloba (Pedaliaceae) : morphology and chemical composition of the secretion.
(2012)Ceratotheca triloba (Bernh.) E. Mey. ex Hook. f., commonly known as the wild foxglove, is a fast growing annual that is indigenous to southern Africa. The surface of the plant is covered with fine, hair-like trichomes, ... -
Seed dormancy and germination in Protea compacta R.Br. and Leucadendron daphnoides Meisn.
(1974)The germination responses of seed to a wide variety of treatments showed that both the pericarp and the embryo contribute to the dormant condition in Protea compacta. Germination can be improved to a greater or lesser ... -
Seed germination and medicinal properties of Alepidea species.
(2009)The rhizomes of Alepidea amatymbica and Alepidea natalensis are used for medicinal purposes. Because of the increase in demand for these plants the species is becoming scarce. As the seed biology of neither species is well ... -
Seedling establishment of Themeda triandra Forssk. in the montane grasslands of Natal.
(1994)Soil erosion and vegetation destruction have reached serious proportions in disturbed areas of the montane grasslands of the Natal Drakensberg. Little is known of the inherent ability of indigenous grasses to produce ... -
The senescence of the cut carnation (Dianthus caryophyllus L. cv. White Sim) flower.
(1985)A review of the literature pertaining to cut carnation flower senescence and the regulatory role of plant hormones in this process revealed the value of this system in physiological studies. Carnation flower senescence ... -
Sink regulation of photosynthesis in sugarcane
(2007)The C4 plant, sugarcane (Saccharum spp. hybrids), accumulates sucrose to high concentrations and, as a result, has been the focus of extensive research into the biochemistry and physiology of sucrose accumulation. Despite ... -
Somatic embryogenesis of Pinus patula Scheide et Deppe.
(1994)Immature, green female cones of Pinus patula Scheide et Deppe. were collected on a weekly basis during the South African summer months from December 1991 to February 1992 and from December 1992 to March 1993. Embryogenic ... -
Some aspects of biological control of seed storage fungi.
(1995)Under storage conditions of ambient temperature and relative humidity in South Africa, seed-associated mycoflora proliferates. Fusarium moniliforme is ubiquitous in newly-harvested maize, persisting for variable periods ... -
Some aspects of megagametophyte development and post-shedding seed behaviour of Encephalartos natalensis (Zamiaceae)
(2009)Very little is known about the post-shedding seed behaviour and megagametophyte development of the cycads, the most primitive extant seed-bearing plants, which pre-date the dinosaurs. In the present investigation, seeds ... -
Some implications of associated mycoflora during hydrated storage of recalcitrant seeds of Avicennia marina (Forssk.) Vierh.
(2004)Three questions are considered in the context of the possible effects of seedassociated mycoflora, typified by Fusarium moniliforme, during hydrated storage of recalcitrant seeds of the tropical species, ... -
Some investigations of the responses of Quercus robur and Ekebergia capensis embryonic axes to dehydration and cryopreservation.
(2000)Recalcitrant seeds are those that are shed at high water contents, are actively metabolic throughout development, when they are, and remain, desiccation-sensitive, and may also be chilling sensitive. These properties ... -
Some investigations towards the cryopreservation of sugarcane germplasm.
(2009)Sugarcane has become an increasingly important crop in recent years, with South Africa featuring as one of the prominent producers. This has led to a significant growth in the South African sugarcane industry, translating ... -
Some invetsigations on the responses to desiccation and exposure to cryogenic temperatures of embryonic axes of Landolphia kirkii.
(2011)Landolphia kirkii is scrambling shrub forming an integral part of the flora along the coastal areas of north-eastern South Africa. The non-sustainable harvesting of fruit as food source, by monkeys and rural communities ... -
Some physiological and growth responses of three eucalyptus clones to soil water supply.
(2002)The response of three Eucalyptus spp. clones (GC550, GU210 and TAG14) to water availability was assessed in terms of growth, plant water status, leaf gas exchange, whole plant hydraulic characteristics (both root and ...