Genetic analysis of SBCMV resistance in durum wheat was carried out using a population of 181 recombinant inbred lines (RILs) obtained from Meridiano (moderately resistant) × Claudio (moderately susceptible). The RILs were characterized for SBCMV response in the field under severe and uniform SBCMV infection during 2007 and 2008 and profiled with SSR and DArT markers. A wide range of disease reaction (as estimated by symptoms and DAS-ELISA) was observed. Most of the variability for SBCMV-response was explained by a major QTL (QSbm.ubo-2BS) located in the distal telomeric region of chromosome 2BS near Xwmc243, with the favourable allele contributed by Meridiano. QTLs with minor effects on SBCMV-response were also detected. Consistently with the observed transgressive segregation, both parents contributed resistance alleles. QSbm.ubo-2BS significantly affected grain yield and test weight of the grains.
Mapping genetic factors for resistance to Soil-Borne cereal mosaic virus (SBCMV) in durum wheat / MACCAFERRI M.; RATTI C.; RUBIES-AUTONELL C.; TUBEROSA R.; DEMONTIS A.; MASSI A.; STEFANELLI S.; VALLEGA V.; SANGUINETI M.C.. - ELETTRONICO. - (2008), pp. 1-3. (Intervento presentato al convegno 11th International Wheat Genetics Symposium 2008 tenutosi a Brisbane, Australia nel 24-29 August 2008).
Mapping genetic factors for resistance to Soil-Borne cereal mosaic virus (SBCMV) in durum wheat
MACCAFERRI, MARCO;RATTI, CLAUDIO;RUBIES AUTONELL, CONCEPCION;TUBEROSA, ROBERTO;STEFANELLI, SANDRA;SANGUINETI, MARIA CORINNA
2008
Abstract
Genetic analysis of SBCMV resistance in durum wheat was carried out using a population of 181 recombinant inbred lines (RILs) obtained from Meridiano (moderately resistant) × Claudio (moderately susceptible). The RILs were characterized for SBCMV response in the field under severe and uniform SBCMV infection during 2007 and 2008 and profiled with SSR and DArT markers. A wide range of disease reaction (as estimated by symptoms and DAS-ELISA) was observed. Most of the variability for SBCMV-response was explained by a major QTL (QSbm.ubo-2BS) located in the distal telomeric region of chromosome 2BS near Xwmc243, with the favourable allele contributed by Meridiano. QTLs with minor effects on SBCMV-response were also detected. Consistently with the observed transgressive segregation, both parents contributed resistance alleles. QSbm.ubo-2BS significantly affected grain yield and test weight of the grains.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
