Browsing Botany by Title
Now showing items 136-155 of 261
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Occurrence and properties of the multicopper oxidases laccase and tyrosinase in lichens.
(2012)The work presented in this thesis describes the occurrence and properties of two multicopper oxidases derived from lichens. Despite numerous data on laccases and tyrosinases in fungi and flowering plants, this is the first ... -
On the ecology of hyperscum-forming Microsystis aeruginosa in a hypertrophic African lake.
(1987)Light is the primary source of energy in most of earth's ecosystems . In freshwater ecosystems the major interacting factors that determine the abundance and species composition of planktonic phototrophs, the primary ... -
On the vacuolar system in maize roots.
(1979)Root-cap cells of Zea mays L proliferate by division in the cap meristem, and subsequently differentiate and mature as they move towards the periphery of the cap, where ' they undergo autolysis and are sloughed. Vacuolar ... -
Optimising methods for embryonic axis fixation and micropropagation of Syzygium cordatum Hochst.
(2009)Syzygium cordatum Hochst. (family - Myrtaceae), commonly called the umDoni (Zulu) tree, is found throughout South Africa. The tree is utilised for its fruit, bark and wood by many villagers, and this demand has placed ... -
Optimising mini-plug transplanting of Eucalyptus dunnii seedlings.
(2013)Mini-plug transplanting has only recently been described as a useful propagation method for use in forestry nurseries. Mini-plug seedlings are seedlings that have been pre-cultivated in containers with volumes less than ... -
Overcoming biological barriers to control pollinated seed production in Eucalyptus.
(2009)The overall aim of this PhD study was to develop protocols to improve the efficiency of eucalypt controlled pollinations (CPs) in order to make it more cost-effective for forestry companies to perform them on a commercial ... -
Oxidative status and stress associated with cryopreservation of germplasm of recalcitrant-seeded species.
(2012)Genetic diversity of cultivated species and their wild relatives, as well as of wild species encompasses plant genetic resources or germplasm, the ex situ preservation of which embodies a critical aspect of biological ... -
Patterns and rate of woody vegetation cluster development in a semi- arid savanna, Natal, South Africa.
(1996)No abstract available. -
The performance and rooting of eucalyptus grandis x nitens cuttings.
(2007)Hybrid clones of Eucalyptus grandis and E. nitens (GN) have consistently been shown to be suitable for planting in cold, dry, marginal plantation sites, where they exhibit high yields and superior pulp properties. However, ... -
Pharmacological activities of selected South African medicinal plants.
(2011)The use of traditional medicine is a popular practice in South Africa especially among rural dwellers due to several reasons such as availability of natural products, cultural beliefs, preference of natural products to ... -
Pharmacological evaluation of medicinal plants used by Venda people against venereal and related diseases.
(2012)Venereal diseases (VDs) are infections that are mainly transmitted through sexual intercourse and amongst these are gonorrhoea, syphilis, chlamydia and trichomoniasis. Gonorrhoea is the most commonly known VD and the widest ... -
Pharmacological investigation of some trees used in South African traditional medicine.
(2005)South Africa is home to a wide diversity of cultural groups, all of which utilize the flora for a variety of purposes. This is true with regard to traditional medicine systems which are similar to those of the rest of ... -
Pharmacological properties of members of the Sterculiaceae.
(2002)There is a resurgence of interest in many countries in medicinal plants and their curative properties (HARBORNE & BAXTER, 1993). Little work has previously been conducted on the Sterculiaceae species, especially those ... -
Pharmacological, phytochemical and safety evaluation of commercial herbal preparations common in South Africa.
(2009)Herbal formulations claimed to cure several medical conditions including skin eruptions, chest pains, wounds, gout, menstrual pains, stress, nervous disorders, microbial and viral infections as well as stomach ailments ... -
Pharmacology and phytochemistry of South African plants used as anthelmintics.
(2009)Traditional medicine in South Africa is part of the culture of the people and has been in existence for a long-time. Although animal components form part of the ingredients used, plant material constitutes the major ... -
Pharmacology and phytochemistry of South African traditional medicinal plants used as antimicrobials.
(2009)Among all the major infectious human diseases, gastro-intestinal infections caused by microbial pathogens are a major cause of morbidity and infant death in developing countries, largely due to inadequate sewage disposal ... -
Physiological and gene expression responses to water stress in drought tolerant and drought sensitive maize cultivars.
(1996)Physiological characteristics of the response to water stress of two maize cultivars, the one drought resistant (PAN473) and the other drought sensitive (SR52), were compared. Mature plants were grown in one of two ... -
Physiological and molecular characterization of habituated and non- habituated soybean callus lines (Glycine max (L.) Merr cv. Acme)
(1998)A cytokinin habituated soybean callus has been isolated, utilizing the cytokinin soybean bioassay. The habituated callus line was subsequently characterized with a non-habituated callus line in relationship to levels ... -
Physiological aspects of shoot growth regulation in juvenile and adult Citrus sinensis (L.) Osbeck.
(1982)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 ... -
The physiology of flowering with contributions by in vitro techniques.
(1987)Abstract cannot be copied from pdf document.