Now showing items 41-50 of 239
Tissue culture studies on citrus and Welwitschia.
Part I. IN VITRO CULTURE OF CITRUS EMBRYOS AND NUCELLAR ISOLATES Zygotic embryos of the Ellendale mandarin, a monoembryonic variety of citrus, were cultured on modified basal media of Murashige and Skoog (BM), and ...
Isolation and characterisation of senescence-related genes in carnations.
Senescence has been the subject of many studies, with the ultimate goal of increasing longevity of cut flowers, and for insight into the process of ageing. Senescence in the carnation is a complex phenomonen involving ...
A revision of Argyrolobium (Crotalarieae, Fabaceae) in South Africa.
A revision of 45 South African species of Argyrolobium is presented comprising nomenclature, typification, recorded distributions and full descriptions. In an attempt to reduce confusion between subtly different species, ...
Ultrastructure of the germinating Welwitschia mirabilis seed.
The structure and chemical composition of quiescent Welwitschia mirabilis (Hooker fil.) seeds and resultant changes occurring during the first 7 days of germination were studied. Research was focussed on the megagametophyte ...
Extraction, purification and determination of Solasodine in cultures of Solanum mauritianum Scop.
Solasodine, a steroidal alkaloid, is used by the pharmaceutical industry in certain parts of the world, as a raw material in the synthesis of steroid drugs. The compound is contained in many members of the genus Solanum, ...
Seedling establishment of Themeda triandra Forssk. in the montane grasslands of Natal.
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 ...
An investigation into the potential of faecal sludge for plant production.
Abstract available in PDF file.
The interaction between endophytic Fusarium species and Eldana saccharina (Lepidoptera) following in vitro mutagenesis for F. sacchari tolerance to control the borer in sugarcane.
Eldana saccharina is a major pest in the South African sugar industry. Stalk damage by this borer and infection of bored tissue by opportunistic fungi result in loss of biomass and sucrose content, respectively. Amongst ...
Effects of some of the procedural steps of cyropreservation on cryo-recalcitrant zygotic embryos of three amaryllid species producing desiccation-sensitive seeds.
Cryopreservation is the most promising method for the long-term conservation of germplasm of plants producing desiccation-sensitive seeds. While such seeds are generally termed recalcitrant in the context of conventional ...
Micromorphology and phytochemistry of the foliar secretory structures of Stachys natalensis Hochst. and development of an in vitro propagation protocol.
Many members of the genus Stachys have been used as ornamental plants, or as edible foods and, in a number of cultures, as traditional medicine. One such species, Stachys natalensis Hochst., is a perennial, straggling shrub ...