Thanks to its contribution human nutrition, rice is a vital issue, mainly based on quality. While O. glaberrima abandoned in favor of Asian rice, this study was carried out identification process best grain quality African order make them more competitive and valorous systems varietal improvement. Principal components analysis method has been used for characterization 215 accessions, their tech...

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...

The U.S. Plant Variety Protection Act (PVPA) of 1970 was meant to strengthen intellectual property protection for plant breeders. A model of investment under partial excludability is developed, leading to the hypotheses that any increase in excludability or appropriability of the returns to invention, attributable to the PVPA, would lead to increases in investment or efficiency gains in varieta...

The cultivated strawberry (Fragaria x ananassa Duch.) is an important berry crop worldwide due to its flavourful taste, and high content of nutrients and health-beneficial phytochemicals. Derived from interspecific hybridization of the octoploids F. virginiana and F. chiloensis, a vast number of strawberry varieties have been developed adopted to varying growth environments, and in order to mee...

Genealogical data have been used very widely to construct indices with which to examine the contribution of plant breeding programmes to the maintenance and enhancement of genetic resources. In this paper we use such indices to examine changes in the genetic diversity of the winter wheat crop in England and Wales between 1923 and 1995. We find that, except for one period characterized by the do...

In intonation languages, the realization of pitch accents varies with the application of phonetic e!ects such as &&truncation'' and &&compression''. These e!ects can change the surface form of accents but do not a!ect the inventory of phonological contrasts. Cross-linguistic di!erences in the application of truncation and compression have been attested for the standard varieties of English and ...