Difference between vertical resistance vs horizontal resistance
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Horizontal resistance is polygenic, and acts against all races of blight. Vertical resistance, conferred by the R-genes, is oligogenic, and can be overcome by a change of race. Horizontal resistance slows down the rate at which disease increases in the field.
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1
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Horizontal Resistance is polygenic , and acts against all races of Blight .
Vertical Resistance, conferred by the R-genes, is oligogenic , and can be overcome by a change of race.
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