Response of Ryegrass Plant Introductions to Artificial Inoculation with Pyricularia grisea under Greenhouse Conditions. L. E. Trevathan, Assistant Professor, Department of Plant Pathology and Weed Science, Mississippi State University, Mississippi State 39762. Plant Dis. 66:696-697. Accepted for publication 21 October 1981. Copyright 1982 American Phytopathological Society. DOI: 10.1094/PD-66-696.

A total of 315 ryegrass (Lolium multiflorum, L. perenne) plant introductions representing 41 countries were tested for resistance to Pyricularia grisea. Symptoms ranged from no apparent leaf lesions to plant death. PI 231592, 231602, 287849, 287852, 298091, 303015, 303026, and 306692 were asymptomatic following double inoculations with P. grisea. Plant death was not correlated with number of leaf lesions.

Keyword(s): ryegrass blast.