Modeling of introgression between Elymus caninus and E. fibrosus (Poaceae) and their registration using one-dimensional SDS electrophoresis

Abstract

Artificial sexual hybrids between Elymus caninus (L.) L. and E. fibrosus (Schrebk) Tzvel. were experimentally examined in generations F1-F5. The possibility of genetic introgression between these species was shown. Morphologically, the hybrid plants can be assigned to either of the parental species or to variety E. caninus var. muticus (Holmb.) Karlsson. Some traits (spike density, leaf blade width, leaf blade pubescence, awns of lemmas) exhibited considerable variation. Polypeptide spectra of endosperm proteins were characterized in the initial parental biotypes and the hybrid progeny, using a gel-buffer SDS electrophoresis system. It was suggested that successful interspecies hybridization requires backcrosses or normalizing crosses. The possibility of sexual genetic exchange enables to utilize the gene pools of the two species to transfer the required traits in selection forage forms.