Genome size variation among annual bluegrass selections from golf course greens.
Annual bluegrass is highly variable for many characteristics, including genome size.
This technique was used to study genome size variation among 103 selections from putting greens at 6 golf courses in the Northeast United States. Genome size values for fertile, presumably tetraploid, selections ranged from 3.37pg to 4.55pg. The presence of sterile, presumably polyhaploid strains, with genome size values of approximately 2pg, was detected in 3 populations. Significant differences in genome size occurred within all 6 populations, however, differences among populations were not significant. Significant, positive correlations between genome size, leaf texture, and number of inflorescences per unit area were detected.