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.
MACCAFERRI M., RATTI C., RUBIES-AUTONELL C., TUBEROSA R., DEMONTIS A., MASSI A., et al. (2008). Mapping genetic factors for resistance to Soil-Borne cereal mosaic virus (SBCMV) in durum wheat. SYDNEY : Sydney University Press.
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.