Basic Studies relating to the Transference of Genetic Characters From Triticum Monococcum L. to Hexaploid Wheat

Abstract

Two techniques used for genetic transfer of stem rust resistance from einkorn (T. monococcum) to hexaploid wheat are described. Success of direct interspecific hybridization between wheat and einkorn was confined to the wild form, and is attributed to differences in survival and development of F 1 hybrids rather than crossability between the two species or germination of hybrid grains. Meiotic pairing between A genome chromosomes in interspecific hybrids was shown to be significantly lower in AABD than in AAB hybrids. These two interspecific hybrids also showed a different distribution pattern of functional female gametes.