The resistance of Capsicum spp to tobamoviruses is conferred by the genes series L¹ to L4. Based on the ability of some isolates to overcome the resistance genes, the tobamovirus can be classificated in the pathotypes P0, P1, P1-2 and P1-2-3. In Brazil, at this moment there are three species of tobamovirus: Tobacco mosaic virus (TMV), Tomato mosaic virus (ToMV), belonging to pathotype P0 and Pepper mild mottle virus (PMMoV) belonging to pathotype P1-2 respectively, that can infect sweet and hot peppers. Eighty-six genotypes of sweet and hot pepper were evaluated for the resistance to tobamovirus. Eigth genotypes of C. annuum, five of C. baccatum and the three genotypes ICA #39, Pimenta de cheiro and PI 152225 of C. chinense reacted with hipersensibility to ToMV, while the genotype Ancho of C. annuum was considered tolerant to ToMV, remaining symptomless but allowing the multiplication of the virus. The genotypes considered resistant to ToMV, were evaluated for the reaction to P1,2 PMMoV. Only the PI 152225 of C. chinense reacted with hipersensibility to PMMoV, indicating that it could be used as a potential source of resistance in the breeding programs from Brazil.
Sweet pepper; hot pepper; ToMV; TMV; PMMoV
