Now showing items 1-10 of 42
Systematic studies in Gnidia L. (Thymelaeaceae)
Gnidia L., variously estimated to contain 100–160 species, is the largest genus in the sub-cosmopolitan family Thymelaeaceae. Most species are shrubby, and occur in tropical and southern Africa, with one species reaching ...
A regulatory role for proline metabolism in Arabidopsis thaliana (L.) Heynh.
Many plants accumulate organic osmolytes in response to the imposition of environmental stresses that cause cellular dehydration. Of these, proline is the most extensively studied. Conclusive demonstration that this imino ...
Micropropagation of date palm (Phoenix dactylifera L.) and papaya (Carica papaya L.)
Date palms (Phoenix dactylifera L.) and papayas (carica papaya L.) are two commercially important plantation crops. Their economic potential in South Africa and worldwide is increasing. However, due to disease, pests and ...
Regeneration and biotransformation of some members of the Cucurbitaceae.
Five cultivars, all belonging to the family Cucurbitaceae, have been tested for the ability to regenerate shoots or somatic embryos from cotyledonary explants. The influence of several combinations of growth regulators ...
Proline biosynthesis in transgenic soybean plants.
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 ...
Studies on the primary phloem of Gomphocarpus physocarpus.
Penetration of the stems and leaves of Gomphocnrpus physocarpus by the aphid, Aphis nerii was studied with light and phase microscopes. Penetration of the epidermis and ground tissue was largely intercellular, that ...
'n Plantekologiese opname van Boschberg en sy omringende gebiede met spesiale verwysing na die weidingsfaktor.
No abstract available.
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 ...
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 ...
A plant ecological survey of the Umfolozi Game Reserve, Zululand.
A landscape unit approach based on use of airphotos was used for investigation of Deciduous Acacia Woodland in the Reserve. The approach was useful for indicating that a quantity of as few as 531 samples could be suitable ...