Abstract:
The precise origin of the wheat plant as we know it today is not known. Wheat evolved from wild grasses, probably somewhere in the Near East. A very likely place of origin is the area known in early historical times as the Fertile Crescent - a region with rich soils in the upper reaches of the Tigris Euphrates drainage basin. Wheat is one of the universal cereals of old world agriculture. Wheat has a complex polyploid large genome in the cereal crops Efforts on wheat genome mapping using DNA markers started after formation of the International Triticeae Mapping Initiative (ITMI) in 1990. However, the progress in developing saturated map was slow because of large genome size of wheat, polyploid nature, high proportion of repetitive DNA and lack of sufficient polymorphism. For large-genome species, including crops such as wheat full-genome sequences may not be available in the near future. Therefore, it is necessary to devise alternative strategies to access genomes of wheat and its relatives on a large scale and thus ensure continued advances in the biology of wheat. In this paper, the availability of abundant, high-throughput sequence based markers which is the key for detailed genome-wide trait analysis has been reviewed.
Page(s):
305-327
DOI:
DOI not available
Published:
Journal: Proceedings of Pakistan Academy of Sciences, Volume: 44, Issue: 4, Year: 2007