ISHS Acta Horticulturae 704: X International Workshop on Fireblight
QTLS RELATED TO FIRE BLIGHT RESISTANCE IN PEAR |
| Authors: | L. Dondini, F. Gaiotti, L. Pierantoni, R. Chiodini, S. Tartarini, S. Sansavini, C. Bazzi |
| Keywords: | Pyrus communis, molecular markers, Erwinia amylovora, reactivity, breeding |
| Abstract:
For several years, pear production in Emilia-Romagna (Po River Valley, northeastern Italy) has been strongly affected by fire blight. The presence of different levels of resistance to fire blight (Erwinia amylovora) in European pear (Pyrus communis L.) cultivars suggests that QTLs related to resistance can be identified. Two European pear linkage maps (by crossing the cultivars ‘Passe Crassane’ and ‘Harrow Sweet’, susceptible and resistant to E. amylovora, respectively) were constructed. At present, the ‘Harrow Sweet’ map covers enough of the pear genome to identify four possible QTLs (all marked by the presence of a SSR) related to fire blight resistance and to develop a suite of molecular markers able to discriminate resistant and susceptible genotypes in the analysed population, as well as to select new fire blight resistant genotypes in pear breeding programmes. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
