Evaluation location: Florida, United States
Study was conducted to estimate ploidy level and determine DNA content of Lolium multiflorum. The average 2C DNA content was 6.13 - 0.36 pg for diploids and 12.30 - 0.83 pg for tetraploids. Five seeds per accession were used to determine ploidy using flow cytometry. Diploid and tetraploid annual ryegrass showed significant differences for morphological and agronomic traits.