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Partial dominance of resistance to potato virus y in capsicum annuum

Partial dominance of resistance to potato virus y in capsicum annuum

Plant Disease 64(1): 57-59

In pepper plants (C. annuum L.) carrying the gene ya for potato virus y [PVY] resistance, the heterozygous condition ya+ya can be differentiated from the susceptible ya+ya+ by the symptomatology after PVY inoculation. The heterozygous plants, which are more vigorous and contain lower virus titer than the homozygous plants, can be considered partially resistant. Hence, breeding for PVY resistance can be made more efficient by repeated backcrossing of the identified heterozygous plants with the recurrent susceptible cultivars.

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