Variety traits
Lolium perenne L.
The ability of perennial ryegrass to maintain viability and productivity when exposed to stress factors such as trampling, drought, salinity, and low temperatures.
In the reference 30 varieties crop Perennial ryegrass, where this is mentioned in the description.
To assess tolerance to trampling, wear simulators are used, measuring the percentage of green cover, turf quality on a 1–9 scale, and NDVI index values. Tolerance to grazing is determined through multi-year persistence trials—the ability of a cultivar to maintain population density within the sward under conditions of regular livestock grazing.
When assessing resistance to abiotic stresses, such as drought or salinity, both laboratory phytotests and field observations are used. The main indicators include root and shoot length, dry biomass, seedling vigor index, and physiological markers, including chlorophyll content and enzyme activity, such as catalase.
High tolerance of perennial ryegrass cultivars is characterized by a minimal decrease in quality, cover, or biomass relative to a standard under a specific stress impact. This trait directly affects sward longevity, the need for overseeding, aesthetic properties, and the functional purpose of the stands.
General information about the subject — on the page Tolerance.
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 perenne L. · Perennial ryegrass
Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey
Lolium perenne L. · Perennial ryegrass
MEYER WILLIAM / THE SCOTTS COMPANY
Lolium perenne L. · Perennial ryegrass
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / Wilbert Luesink
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland B.V. (Variety Administration)
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Lolium perenne L. · Perennial ryegrass
Rutgers, The State University of New Jersey - Cook College
Lolium perenne L. · Perennial ryegrass
SEED RESEARCH OF OREGON
Lolium perenne L. · Perennial ryegrass
SEED RESEARCH OF OREGON
Lolium perenne L. · Perennial ryegrass
Lolium perenne L. · Perennial ryegrass
Lolium perenne L. · Perennial ryegrass
D J Van der Have BV (NL)
Lolium perenne L. · Perennial ryegrass
Jonathan Green & Sons, Inc., Cascade International Seed Company
Lolium perenne L. · Perennial ryegrass
DLF Pickseed USA, Inc. and Rutgers, The State University of New Jersey
Lolium perenne L. · Perennial ryegrass
Barenbrug USA
Lolium perenne L. · Perennial ryegrass
PICKSEED WEST INC
Lolium perenne L. · Perennial ryegrass
MCCARTHY RESEARCH FARM
Lolium perenne L. · Perennial ryegrass
Dipl.Ing.agr. Heiner Busch in Fa. Deutsche Saatveredelung AG / Dr. Ulf Feuerstein
Lolium perenne L. · Perennial ryegrass
Barenbrug USA
Lolium perenne L. · Perennial ryegrass
Saatzucht Steinach GmbH & Co KG
Lolium perenne L. · Perennial ryegrass
Semunion Gazon GIE (FR)
Lolium perenne L. · Perennial ryegrass
Lolium perenne L. · Perennial ryegrass
EIGEN VERMOGEN VH INSTITUUT VOOR LANDBOUW- EN VISSERIJONDERZOEK
Lolium perenne L. · Perennial ryegrass
PROSEEDS MARKETING