Variety traits
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart
The ploidy of Italian ryegrass determines the classification of varieties into diploid (2n=14) and tetraploid (2n=28) forms, which differ significantly in morphology, forage quality, and agronomic characteristics.
In the reference 190 varieties crop Italian ryegrass, where this is mentioned in the description.
Diploid varieties of Italian ryegrass are characterized by smaller cell size, higher tillering capacity, and the formation of a dense sward. They demonstrate increased tolerance to trampling, better competitiveness against weeds, and adaptability to extreme conditions, including waterlogged soils.
Tetraploid varieties have larger cells, which leads to the formation of wider leaves and a higher concentration of water-soluble carbohydrates, improving the palatability of the forage for livestock. These forms exhibit an erect growth habit and require higher seeding rates due to their larger seed size, although they are sensitive to overgrazing and environmental stress.
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. ssp. italicum (A. Br.) Volkart · Italian ryegrass
P.BREED.INST.WALES
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Limagrain Genetics Grandes Cultures SA (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
RAGT SA (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Department Plantgenetics and Breeding (BE)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
DLF Seeds A-S, DK
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Barenbrug Holland BV, 6501 BH Nijmegen
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Deutsche Saatveredelung AG, D-59557 Lippstadt
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
STELLING DIETER
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
LIAN VAN KRUIJSSEN
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
FAL Station de Recherche Agronomique Federale (CH)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
FAL Station de Recherche Agronomique Federale (CH)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Barenbrug Holland BV (NL)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Barenbrug Holland BV (NL)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Slechtitelská stanice Hladké Zivotice spol.s.r.o.
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
DLF Trifolium Hladke Zivotice, s.r.o. (CZ)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
RAGT 2n, FR
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
PRODANA SEEDS A/S (DK)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
ILVO-PLANT 39
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
RAGT SA (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Barenbrug Holland BV (NL)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Carneau Freres SA (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
FAL Station de Recherche Agronomique Federale (CH)