TMS{Dwyka+Dwyka ... 510 4 2 The tests were carried out during October/November which is past .the peak maturity period. By taking a number of samples from each variety it was hoped that variations due to ratoon, age, soil, rainfall, etc. would be smoothed out. The results indicated that there is a definite varietal trend but considerable fluctuations occurred within each variety. N:Co.310 showe...

Wavelength (nm) 1995), analysis of sugar related products (Schaffler et al., 1993) and predicting varietal resistance to the stalk borer Eldana saccharina Walker (Lepidoptera: Pyralidae) (Rutherford et al., 1993). This paper is a summary of some past and current research in South Africa, as well as indicating potential new applications. Comparison of NIR spectra for a range of products tested a...

Plant breeding is a key mechanism for adaptation of cropping systems to climate change. Much discussion of breeding for climate change focuses on genes with large effects on heat and drought tolerance, but phenology and stress tolerance are highly polygenic. Adaptation will therefore mainly result from continually adjusting allele frequencies at many loci through rapid-cycle breeding that deliv...

Wine is an amazingly complex natural product that requires dedicated scientists to resolve many of its mysteries. Traditional synthetic organic chemistry and modern analytical techniques are powerful tools at the disposal of wine chemists who tackle the complexities of wine in order to improve scientific understanding and provide practical solutions to industry. Part of this quest for knowledge...

Phenotyping in field experiments is challenging due to interactions between plants and effects from biotic and abiotic factors which increase complexity in plant development. In such environments, visual or destructive measurements are considered the limiting factor and novel approaches are necessary. Remote multispectral imaging is a powerful method that has shown significant potential to esti...

Participatory methods have been widely adopted by researchers working on applied agricultural problems including crop breeding. This change in paradigm has implications for the design and analysis of methods used. Some of these are summarized in a companion paper by this author (see Coe 1, this proceedings). An assumption of this paper is that formal analysis of quantitative data collected syst...