New disease symptoms observed on field-grown potato plants with potato spindle tuber viroid and potato virus Y infections |
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| Authors: | R P Singh T H Somerville |
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| Institution: | (1) Agriculture Canada Research Station, P.O. Box 20280, E3B 4Z7 Fredericton, New Brunswick, Canada |
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| Abstract: | Summary Potato spindle tuber viroid (PSTV) and potato virus Y (PVY) were isolated from plants of cultivar Kennebec with severe necrotic
symptoms in the field. In the greenhouse, severe necrotic symptoms were reproduced only when potato plants were infected either
simultaneously with PSTV+PVY, or with PSTV prior to PVY infection. Thirteen additional potato cultivars were tested in the
greenhouse for this synergistic reaction and eight developed necrotic responses similar to cv. Kennebec. PVY concentration
was significantly higher in doubly infected plants, compared with those infected with PVY alone. |
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| Keywords: | Synergistic reaction necrotic symptoms virus concentration ELISA PAGE |
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