Variety traits
Lolium perenne L.
Drought tolerance in perennial ryegrass is considered a complex quantitative trait manifested in the crop's ability to maintain biomass and stand density under moisture deficit, as well as to regenerate after drought periods.
In the reference 27 varieties crop Perennial ryegrass, where this is mentioned in the description.
To assess the tolerance of Lolium perenne L., complex methods are applied, including the use of rain-out shelters under field conditions and the induction of osmotic stress using polyethylene glycol. The main indicators are the accumulation of shoot and root dry matter, leaf wilting rate, relative water content in tissues, and the accumulation of osmolytes such as proline and soluble sugars.
This trait does not have standardized values, so the assessment is always comparative relative to reference cultivars. Crucial for ryegrass is the ability to maintain productivity during the summer period and avoid stand thinning. The presence of intraspecific variability, including the involvement of symbiotic endophytic fungi, allows for the selection of genotypes adapted to water stress conditions.
General information about the subject — on the page Drought 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
Deutsche Saatveredelung AG - DSV (DE)
Lolium perenne L. · Perennial ryegrass
DLF Pickseed
Lolium perenne L. · Perennial ryegrass
GRASSLAND TECHNOLOGY LTD
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Lolium perenne L. · Perennial ryegrass
DLF Trifolium A-S, DK
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland BV (NL)
Lolium perenne L. · Perennial ryegrass
Den Haan Zaden
Lolium perenne L. · Perennial ryegrass
Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey
Lolium perenne L. · Perennial ryegrass
Oregro Seeds
Lolium perenne L. · Perennial ryegrass
ABERYSTWYTH UNIVERSITY
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S
Lolium perenne L. · Perennial ryegrass
DLF Seeds A-S, DK
Lolium perenne L. · Perennial ryegrass
Blue Moon Farm
Lolium perenne L. · Perennial ryegrass
PURE SEED TESTING
Lolium perenne L. · Perennial ryegrass
PURE SEED TESTING
Lolium perenne L. · Perennial ryegrass
ZAJAC PERFORMANCE SEEDS
Lolium perenne L. · Perennial ryegrass
TURF MERCHANTS
Lolium perenne L. · Perennial ryegrass
Rutgers, The State University of New Jersey
Lolium perenne L. · Perennial ryegrass
PURE SEED TESTING
Lolium perenne L. · Perennial ryegrass
Dr. Ulf Feuerstein / Michael J. McCarthy
Lolium perenne L. · Perennial ryegrass
SEED RESEARCH OF OREGON
Lolium perenne L. · Perennial ryegrass
Lolium perenne L. · Perennial ryegrass
Jonathan Green & Sons, Inc., Cascade International Seed Company
Lolium perenne L. · Perennial ryegrass
HAO-DEMETER-Fodder Crops and Pastures Institute