Now showing items 71-80 of 239
Carbohydrate metabolism in Parthenium argentatum Gray.
The metabolism of carbohydrates in guayule is a subject which has not been considered with respect to its role in cis-polyisoprene synthesis, It has been suggested that acetate or sucrose act as the distal, and isopen ...
'n Plantekologiese opname van Boschberg en sy omringende gebiede met spesiale verwysing na die weidingsfaktor.
No abstract available.
Aspects of structure, growth and morphogenesis in a new filamentous red alga (Ceramiaceae, Rhodophyta)
Pteroceramium, a descriptive name given to an undescribed winged species closely related to Ceramium, has uniaxial filamentous thallus construction with pseudodichotomous branching. Alternate branches become dominant. ...
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 ...
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 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, ...
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, ...
The effect of 6-Benzyladenine on adventitious shoot formation by Lycopersicon. species in vitro.
Lycopersicon esculentum Mill. cv. Rodade was developed in South Africa for the fresh produce market. This cultivar is also of major importance for South African tomato breeding programmes because of its resistance to ...
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 ...