Ploidy is a key genetic parameter of Festulolium, determining the chromosomal stability of hybrids, their fertility, and economically valuable traits. Most modern varieties of this crop are tetraploid (4n).
In the reference
24
varieties
crop Festulolium,
where this is mentioned in the description.
The ploidy level of Festulolium serves as an essential characteristic in breeding and variety registration, reflecting the genome organization inherited from the parent species of the genera Lolium and Festuca. Tetraploid forms (4n) prevail in breeding practice, as this ploidy level allows for the successful stabilization of trait inheritance, combining the productivity of ryegrass with the hardiness of fescue.
The choice of ploidy directly influences the plant morphotype, which determines green mass yield, forage quality, winter hardiness, and drought resistance. Furthermore, the ploidy level is a critical factor for ensuring the fertility of hybrid progeny, and cytogenetic methods as well as molecular markers are employed to monitor the genetic stability of varieties.
General information about the subject — on the page
Ploidy.
Varieties of Festulolium mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.