Diseases
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart
A group of fungal diseases in Italian ryegrass manifesting as spots of various shapes and colors. They are caused by pathogens such as Magnaporthe oryzae, Drechslera species, Alternaria alternata, and Pestalotiopsis trachycarpicola, which primarily affect species of the genus Lolium.
In the reference 20 varieties crop Italian ryegrass, where this is mentioned in the description.
Pyricularia leaf spot (gray leaf spot) is characterized by small, watery spots, leaf tip curling, and a gray coating. Helminthosporium leaf spots manifest as longitudinal or transverse stripes with a net-like pattern, while alternaria leaf spot appears as necrotic reddish-brown spots with a lightened center. Black leaf spot is accompanied by the formation of black necrotic lesions on the leaf blade.
Pathogens such as Pyricularia oryzae exhibit high specificity to the genus Lolium, although a clear classification into internationally recognized races does not exist. Breeding for resistance is based on phenotyping and germplasm screening, and the final indicator is often characterized as tolerance without the identification of specific genetic loci.
General information about the subject — on the page Leaf spot diseases.
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
Barenbrug Holland B.V. (NL)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
JOST BEART
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
RAGT 2n, FR
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Carneau Freres SA (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
RAGT 2n, FR
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
DLF Seeds A/S
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
EIGEN VERMOGEN VH INSTITUUT VOOR LANDBOUW- EN VISSERIJONDERZOEK
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Limagrain Verneuil Holding (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
RAGT 2n, FR
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
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
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