Variety traits
Lolium multiflorum Lam.
Ploidy in Italian ryegrass determines productivity levels and morphological characteristics. Breeding programs distinguish between diploid (2n) and tetraploid (4n) varieties, which differ in seed weight and development intensity.
In the reference 278 varieties crop Italian ryegrass, where this is mentioned in the description.
Two forms of ploidy are key for Italian ryegrass: diploid (2n) and tetraploid (4n) varieties. The main difference between them is observed in seed weight: the 1000-seed weight for tetraploids is 3.7–5.1 g, whereas for diploids this value ranges from 2.5–3.0 g.
Tetraploid forms are often characterized by more vigorous initial seedling growth, higher dry matter yield, and better leafiness. Converting diploid forms to a tetraploid base is a common breeding method used to increase the overall productivity and adaptability of cultivar populations of this crop.
General information about the subject — on the page Ploidy.
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.
Lolium multiflorum Lam. · Italian ryegrass
WRIGHTSON PAS S.A.
Lolium multiflorum Lam. · Italian ryegrass
University of Florida
Lolium multiflorum Lam. · Italian ryegrass
PGG Wrightson Seeds
Lolium multiflorum Lam. · Italian ryegrass
Plant Breeding Hladke Zivotice
Lolium multiflorum Lam. · Italian ryegrass
VEB SAAT
Lolium multiflorum Lam. · Italian ryegrass
Barenbrug Holland B.V.
Lolium multiflorum Lam. · Italian ryegrass
KONINKLIJKE KWEEKBED
Lolium multiflorum Lam. · Italian ryegrass
EURO Grass
Lolium multiflorum Lam. · Italian ryegrass
BARENBRUG HOLDING| Barenbrug Holding B.V.
Lolium multiflorum Lam. · Italian ryegrass
Lukas H. Wolters c/o Euro Grass BV
Lolium multiflorum Lam. · Italian ryegrass
Euro Grass Breeding GmbH Co. KG
Lolium multiflorum Lam. · Italian ryegrass
JOORDENS
Lolium multiflorum Lam. · Italian ryegrass
ADVANTA
Lolium multiflorum Lam. · Italian ryegrass
DLF Trifolium A/S -Dinamarca-
Lolium multiflorum Lam. · Italian ryegrass
Euro Grass Breeding GmbH Co. KG
Lolium multiflorum Lam. · Italian ryegrass
Rouergue Auvergne Gévaudan Tarnais -RAGT-
Lolium multiflorum Lam. · Italian ryegrass
Euro Grass Breeding GmbH Co. KG
Lolium multiflorum Lam. · Italian ryegrass
JOORDENS' ZAADHANDEL| J. Joordens' Zaadhandel B.V.
Lolium multiflorum Lam. · Italian ryegrass
Euro Grass Breeding GmbH Co. KG
Lolium multiflorum Lam. · Italian ryegrass
Theodorus P.M. op den Kamp
Lolium multiflorum Lam. · Italian ryegrass
DLF-TRIFOLIUM| DLF-Trifolium A/S
Lolium multiflorum Lam. · Italian ryegrass
ROBERTO GUARNIERI
Lolium multiflorum Lam. · Italian ryegrass
PEDERSEN CHR.| Chr. Pedersen c/o Zuchtstation Daehnfeldt / ANDERSEN JOERN| Joern Skov Andersen c/o Prodana Seeds A/S
Lolium multiflorum Lam. · Italian ryegrass
DSV Francia