Identification of a new race of Hemileia vastatrix in Brazil
P. G. C. Cabral A , E. M. Zambolim A , L. Zambolim A C , T. P. Lelis A , A. S. Capucho A and E. T. Caixeta BA Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-000, Viçosa, M.G., Brazil.
B Embrapa Café, Parque Estação Biológica, Av. W3 Norte, 70770-901, Brasília, D.F., Brazil.
C Corresponding author. Email: zambolim@ufv.br
Australasian Plant Disease Notes 4(1) 129-130 https://doi.org/10.1071/DN09052
Submitted: 12 November 2009 Accepted: 23 November 2009 Published: 14 December 2009
Abstract
In this study, a survey of physiological races of Hemileia vastatrix was carried out on 34 coffee leaf rust populations collected at several coffee genotypes in Brazil. After the inoculation on leaf disc of coffee differential clones, the races I, II, III, XIII, XVII and XXXVII were characterised. This is the first report of race XXXVII on Coffea arabica in Brazil, which shows the evolutionary potential of H. vastatrix. The emergence of complex races like XXXVII represents a challenge for breeders in the development of resistant cultivars.
Acknowledgements
The authors acknowledge the Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG), Consórcio Brasileiro de Pesquisa e Desenvolvimento do Café (CBP&D), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Ministério da Agricultura Pecuária e Abastecimento (MAPA) for providing financial support. P.G.C. Cabral and A.S. Capucho acknowledge the Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq for providing the student grant.
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