Associative effects of leaf roll and ring rot on disease expression and yield of potatoes |
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| Authors: | G A Nelson W E Torfason |
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| Institution: | 1. Research Station, Canada Department of Agriculture, T1J 4B1, Lethbridge, Alberta
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| Abstract: | Netted Gem potato plants infected with either the ring rot bacterium (Corynebacterium sepedonicum) or the potato leaf roll virus alone exhibited typical symptoms of the respective diseases. Plants infected with both the bacterium and the virus exhibited severe leaf roll. Typical ring rot symptoms were masked in dual infections, thereby increasing the difficulty in detection of the bacterial disease. The combined yield-reducing effect of the two pathogens was greater than that of the potato leaf roll virus and was similar to that caused by ring rot alone. |
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