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Identification of quantitative trait loci involved in resistance to <Emphasis Type="Italic">Pseudomonas syringae</Emphasis> pv. <Emphasis Type="Italic">syringae</Emphasis> in pea (<Emphasis Type="Italic">Pisum sativum</Emphasis> L.) |
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| Authors: | |
| Institution: | 1.Institute for Sustainable Agriculture,CSIC,Córdoba,Spain;2.Consejería de Agricultura y Ganadería, Junta de Castilla y León,Instituto Tecnológico Agrario,Valladolid,Spain;3.Department of Animal and Plant Sciences,University of Sheffield,Sheffield,UK;4.Department of Seed Science and Technology, Faculty of Agriculture,University of Zagreb,Zagreb,Croatia |
| Abstract: | Pseudomonas syringae is the main pathogen responsible for bacterial blight disease in pea and can cause yield losses of 70%. P. syringae pv. pisi is prevalent in most countries but the importance of P. syringae pv. syringae (Psy) is increasing. Several sources of resistance to Psy have been identified but genetics of the resistance is unknown. In this study the inheritance of resistance to Psy was studied in the pea recombinant inbred line population P665 × ‘Messire’. Results suggest a polygenic control of the resistance and two quantitative trait loci (QTL) associated with resistance, Psy1 and Psy2, were identified. The QTL explained individually 22.2 and 8.6% of the phenotypic variation, respectively. In addition 21 SSR markers were included in the P665 × ‘Messire’ map, of which six had not been mapped on the pea genome in previous studies. |
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