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SH1 leaf rust and bacterial halo blight coffee resistances are genetically independent

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dc.contributor.author Rodrigues, Lucas Mateus Rivero
dc.contributor.author Braghini, Masako Toma
dc.contributor.author Guerreiro Filho, Oliveiro
dc.date.accessioned 2018-07-04T12:23:16Z
dc.date.available 2018-07-04T12:23:16Z
dc.date.issued 2017-04
dc.identifier.citation RODRIGUES, L. M. R.; BRAGHINI, M. T.; GUERREIRO FILHO, O. SH1 leaf rust and bacterial halo blight coffee resistances are genetically independent. Bragantia, Campinas, v. 76, n. 2, p. 209-213, Abr./Jun. 2017. pt_BR
dc.identifier.issn 1678-4499
dc.identifier.uri http://dx.doi.org/10.1590/1678-4499.171 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/9996
dc.description.abstract Coffee resistance to Pseudomonas syringae pv. garcae has been associated to pleiotropic effect of SH1 allele, present in coffee plants resistant to certain races of Hemileia vastatrix, the causal agent of leaf rust, or genetic linkage between resistance alleles to both pathogens. To validate this hypothesis, 63 coffee plants in F2 generation were evaluated for resistance to 2 isolates of H. vastatrix carriers of alleles, respectively, v2, v5 (isolate I/2015) and 1; v2; v5 (isolate II/2015) with the objective to confirm presence of SH1 allele in resistant plants to isolate I/2015. The same coffee plants were evaluated for resistance to a mixture of P. syringae pv. garcae strains highly pathogenic to coffee. Results showed that, among F2 coffee allele SH1 carriers, resistant to isolate I/2015, resistant and susceptible plants to bacterial halo blight were found; the same segregation occurs between F2 homozygous for SH1 allele, susceptible to the same isolate (I/2015) of H. vastatrix. Results also indicate that there is no pleiotropic effect of gene or allele SH1 connection between genes conferring resistance to leaf rust caused by H. vastatrix and bacterial halo blight caused by P. syringae pv. garcae. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Instituto Agronômico (IAC) pt_BR
dc.relation.ispartofseries Bragantia;v. 76, n. 2, p. 209-213, 2017
dc.rights Open Access pt_BR
dc.subject Coffea arabica L. pt_BR
dc.subject Resistant cultivars pt_BR
dc.subject Pseudomonas syringae pv. garcae pt_BR
dc.subject linkage pt_BR
dc.subject Hemileia vastatrix pt_BR
dc.subject Pleiotropic effect pt_BR
dc.subject.classification Cafeicultura::Pragas, doenças e plantas daninhas pt_BR
dc.title SH1 leaf rust and bacterial halo blight coffee resistances are genetically independent pt_BR
dc.type Artigo pt_BR

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