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The resistance of the perennial ryegrass cultivar Endura to ryegrass mosaic virus
Author(s) -
GIBSON R. W.,
WOODS R. D.,
PICKERING S. PETA
Publication year - 1980
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1980.tb04757.x
Subject(s) - biology , perennial plant , cultivar , virus , agronomy , resistance (ecology) , mosaic virus , plant virus , virology
SUMMARY The perennial ryegrass cv. Endura is particularly resistant to infection with two ryegrass mosaic virus isolates, RMV‐Roth and RMV‐Sax. A few plants appeared immune to RMV‐Roth but were infected by RMV‐Sax. Two plants that developed only mild symptoms after infection with RMV‐Roth contained few virus particles, but passage through these resistant plants caused no detectable change in the virulence of RMV‐Roth towards S 22 Italian ryegrass. In offsets derived from one of these resistant plants, RMV‐Sax caused severe symptoms and attained a high virus concentration but it was unable to infect if the plant was already infected with RMV‐Roth.