PRODUCTION AND CYTOGENETIC ANALYSIS OF INTERGENERIC HYBRIDS BETWEEN ELYMUS ANTHOSACHNOIDES AND PSATHYROSTACHYS HUASHANICA (POACEAE, TRITICEAE)

Intergeneric hybridization between Elymus anthosachnoides (2n = 28, SS YY) and Psathyrostachys huashanica (2n = 14, NN) was performed. Three hybrid plants, obtained via embryo rescue, were intermediate between t he parents in morphology and developed vigorously, but were completely sterile. The mean chromosome configuration was 19.48 I + 0.76 II per cell in the hybrids at meiotic metaphase I. This result indicates that E. anthosachnoides and P. huashanica are distantly related and that t here is little or no homoeology between N (P. huashanica) and S or Y ( E. anthosachnoides) genomes.