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Variety traits

Ploidy — Italian ryegrass

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.

Sources8

Varieties of Italian ryegrass 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.

Oscar

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Carneau Freres SA (FR)

FR
2 records

Litonio

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

DEUTSCHE SAATVEREDELUNG AG

AT
2 records

Meritra RvP

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

ILVO-PLANT 39

BE
2 records

Draga

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Kmetijski inštitut Slovenije (SI)

HR
2 records

Acquilon

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Deutsche Saatveredelung AG - DSV (DE)

FR
2 records

KPC Laška

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

KIS

SI
2 records

Excellent

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Padana Sementi Elette

BE
2 records

Meroa RvP

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

EIGEN VERMOGEN VH INSTITUUT VOOR LANDBOUW- EN VISSERIJONDERZOEK

BE
2 records

Pepper

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

R 2n (FR)

FR
2 records

Dukat

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Danko Hodowla Roslin Sp.z.o.o.

PL
3 records

Merode

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

AVEVE ZADEN

BE
2 records

Dolomit

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

DEUTSCHE SAATVEREDELUNG AG

2 records

Melfredo

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

ILVO-PLANT 39

BE
2 records

Multisolc ax 9

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

ENRIC MARTI MELIA

ES
2 records

Ralino

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

SEMILLAS FITO, S.A.

ES
2 records

Monarque

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Mommersteeg International BV (NL)

FR
2 records

Dardevyl

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

RAGT SA (FR)

FR
3 records

Yolande

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Limagrain Verneuil Holding (FR)

FR
2 records

Ugnė

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Lietuvos agrarinių ir miškų mokslų centras

LT
2 records

Ensilor

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

GIE GRASS (FR)

FR
2 records

Prestyl

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

RAGT SA (FR)

FR
2 records

AVANCE

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

ZWAAN & DE WILJES

ES HR
2 records

Itarzi

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

DLF Trifolium A-S, DK

FR
2 records

Melmia

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

ILVO-PLANT 39

BE
2 records