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Multiple-disease resistance in Vicia faba: Multi-environment field testing for identification of combined resistance to rust and chocolate spot

AuthorsVillegas-Fernández, Ángel M. ; Sillero, Josefina C.; Emeran, Amero A.; Flores, Fernando; Rubiales, Diego
KeywordsFaba bean
Uromyces viciae-fabae
Botrytis fabae
Genotype × environment interaction
Issue Date9-Oct-2011
CitationField Crops Research 124(1): 59-65 (2011)
AbstractThe aim of this work was to identify Vicia faba germplasm resistant both to rust and chocolate spot. A collection of 43 accessions of V. faba previously identified as chocolate-spot resistant was evaluated for rust and chocolate spot resistance in Egypt and in Spain. The genotype and genotype × environment (GGE) biplot analyses allowed the selection of 11 accessions resistant to both diseases in those locations. These 11 accessions were evaluated for rust in an additional field trial in Spain, all performing better than the susceptible check. The joint analysis of the 11 accessions in the four field trials where they had been evaluated revealed no significant effects either for genotype, environment or the genotype × environment interaction. They are hence promising sources of resistance, both for their low severities and their stable responses across the studied environments. This collection was also tested under controlled conditions against the Egyptian and the Spanish isolates of rust present in the field trials further underlining the stable performance of these genotypes. Finally, the effect of previous infection with chocolate spot on rust resistance was assessed under controlled conditions and no influence of it was found. © 2011 Elsevier B.V.
Identifiersdoi: 10.1016/j.fcr.2011.06.004
issn: 0378-4290
Appears in Collections:(IAS) Artículos
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