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

Villegas-Fernández, A.M. and Sillero, J.C. and Emeran, A.A. and Flores, F. and Rubiales, D. (2011) Multiple-disease resistance in Vicia faba: Multi-environment field testing for identification of combined resistance to rust and chocolate spot. Field Crops Research, 124 (1). pp. 59-65.

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Abstract

The 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

Item Type: Article
Uncontrolled Keywords: Faba bean; Uromyces viciae-fabae; Botrytis fabae; Genotype × environment interaction
Author Affiliation: Institute for Sustainable Agriculture, CSIC, Apdo. 4084, 14080 Córdoba, Spain
Subjects: Plant Protection
Divisions: Other Crops
Depositing User: Mr B Krishnamurthy
Date Deposited: 03 Jul 2013 06:14
Last Modified: 03 Jul 2013 06:14
Official URL: http://dx.doi.org/10.1016/j.fcr.2011.06.004
URI: http://eprints.icrisat.ac.in/id/eprint/10824

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