Chromosome mediated gene transfer via classical hybridization techniques into wheat and detection of the alien chromosomes using up-to-date molecular cytogenetic and genetic methods

摘要

The wild and cultivated species related to wheat represent a valuable gene source (reservoir) for breeding, as a large number of accessions have good resistance against various biotic (diseases, insects) and abiotic (drought, frost) stresses. A largeproportion of the related species can be sexually crossed with wheat, so favourable traits can be transferred from the hybrids via traditional crossing. The transfer of the agronomically useful characters of barley, rye, and some Aegilops and Agropyron species into wheat via classical genetic methods is in progress at the Agricultural Research Institute of the Hungarian Academy of Sciences in Martonvasar. The most up-to-date molecular genetic and cytogenetic (in situ hybridization) methods are used forthe detection of alien gene transfer and the analysis of the hybrids and their derivatives. It is planned to transfer salt and drought tolerance, earliness and favourable nutritional quality parameters from barley, disease resistance from rye and Agropyron species and drought tolerance from Aegilops species into wheat.