Progress in pea breeding for disease resistance at Cordoba, Spain
2008
Rubiales, D., Institute for Sustainable Agriculture (CSIC), Cordoba (Spain) | Fernández-Aparicio, M. | Moral, A. | Pérez-de-Luque, A. | Barilli, E. | Sillero, J.C. | Torres, A.M. | Curto, M. | Castilejjo, M.A. | Prats, E. | Fondevilla, S.
At Cordoba (Spain) we started pea research 10 years ago, have centered our activities mainly in resistance against broomrape (Orobanche crenata) as this was considered the major constraint. After a huge search we found that resistance is very scarce, being able to identify only some levels of incomplete resistance in a few accessions of Pisum sativum and in wild Pisum that were successfully crossed with pea cultivars and introduced into a breeding program that is underway. Resistance is of complex inheritance, so looked QTLs and approached the characterization of the mechanisms of resistance involved. We identified also resistance to Ascochyta blight (Mycosphaerella pinodes) and to powdery mildew (Erysiphe pisi). Studies on the inheritance and identification of QTLs for M.pinodes resistance have been performed. A breeding program including these resistant accessions is also in progress. We have identified a new gene for resistance to E. pisi called Er3. This gene from P.fulvum has been successfully introduced into pea varieties and we have identified SCARs markers linked to this gene that will facilitate the early selection of individuals carrying the gene in breeding programs.
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