Premium
Reaction of some winter oat cultivars to oat mosaic and oat tubular viruses
Author(s) -
CATHERALL P. L.,
BOULTON R. E.
Publication year - 1979
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1979.tb02923.x
Subject(s) - biology , cultivar , virus , avena , host (biology) , agronomy , plant virus , horticulture , virology , ecology
SUMMARY In four out of five seasons in Wales, during 1970‐76, the winter oat cvs Maris Osprey and Peniarth were very susceptible to oat mosaic virus, cv. Padarn was moderately susceptible and cvs Pendrwm and Century were resistant. However, plants of resistant cultivars were sometimes severely damaged and some symptomless plants contained virus particles. It is suggested that a minimum threshold of virus in the plant is necessary to induce symptoms and that this threshold is lower in susceptible than in resistant cultivars. Cvs Pendrwm and Century were also the most resistant to oat tubular virus. Sap from cv. Padarn induced most local lesions in the assay host Nicotiana clevelandii , indicating that oat tubular virus reached its highest concentration in this cultivar.