The genetic relationships between hexaploid wheat landraces from different geographic origins.

摘要

The genetic relationships amongst 81 landraces from different countries were investigated using AFLP analysis with five primer combinations and compared with those obtained using the RAPD method for the same set of landraces. Groups of genetically similar landraces were identified using multivariate statistics on the band data generated by both types of analysis. The landraces were combined into two main groups of either European or Asian origin. Within the main groups the landraces formed subgroupsconsisting mostly of common and other hexaploid wheats, hi general landraces belonging to one group originated from the same region. Distinctions between groups of landraces were mainly due to differences in the frequency of amplified DNA fragments. Theincongruity between the taxonomic division of hexaploid wheats and relationships of the landraces revealed by DNA markers is discussed.