Importance of wheat-rye translocations for breeding modern cultivar of Triticum aestivum L.

Abstract

Investigations of the world wheat genepool conducted by Ukraine's National Centre for Plant Genetic Resources produced information on the geographic origins and genetic background of numerous wheat lines possessing the 1BL/1RS wheat-rye translocation, 1B(R) substitution and 1AL/1RS translocation. Wheat-rye translocations can determine high productivity, adaptive possibilities, and disease and insect resistance in wheat. Data on 330 cultivars and lines carrying wheat-rye translocations and/or substitutions were analysed. Based on this information, wheats were classified according to continent and country of origin and year of release. This clarified how translocation sources of different genetic and geographic origins have been used in breeding programmes all over the world.