Molecular mapping of QTLs for gluten strength as measured by sedimentation volume and mixograph in durum wheat (Triticum turgidum L. ssp durum)

Mapping of main and epistatic effect QTLs associated to grain protein and gluten strength using a RIL population of durum wheat

“…For SV the heritability ranged from 94.2% to 97.1%. These results were in agreement with those reported by Clarke et al (2000) and were higher than those reported by Huang et al (2006) and Patil et al (2009). The genotype-environment interaction was highly significant for GPC and SV, showing that these traits require selection in multiple environments.…”

“…The most important QTLs for SV found in this work are in agreement with those cited by other authors on chromosome arms 1BL, 6AL, 6BL and 7AS (Elouafi et al 2000;Kerfal et al 2010;Patil et al 2009;McCartney et al 2006;Zhang et al 2008). The position of the QSv.cerz-1BL QTL located on chromosome 1BL coincided with the protein marker Glu-B1 on the map.…”

“…Alternatively, Li et al (2009) reported the homoeologous loci Glu-A1 and Glu-D1 strongly associated with this trait, also in common wheat. Recently, Patil et al (2009) found a QTL linked to the Glu-B1 locus associated with SV in durum wheat. In contrast, Elouafi et al (2000) and Blanco et al (2000) did not find any effect of the Glu-B1 locus on gluten strength and they suggested that this had been probably due to the similar effect of the alleles carried by the parental lines in these durum wheat populations.…”

“…Quantative trait loci (QTLs) contributing to the variation of grain protein content were mapped in all chromosomes using hexaploid and tetraploid wheat mapping populations (Blanco et al 2000(Blanco et al , 2002(Blanco et al , 2006Distelfeld et al 2006;Joppa and Cantrell 1990;Mann et al 2009;Olmos et al 2003;Suprayogi et al 2009;Uauy et al 2006;Zhang et al 2008). In addition, QTLs for flour protein content (Campbell et al 2001;McCartney et al 2006;Zhao et al 2010) or others affecting SV (Elouafi et al 2000;Kerfal et al 2010;Li et al 2009;Patil et al 2009;Zhang et al 2008) have also been detected.…”

Genotype × environment interactions and QTL clusters underlying dough rheology traits in Triticum aestivum L.

“…For each trait, phenotypic data for the individual environments were analysed separately and LV, SV and GPC were analysed together with the MDRTs to compare the QTLs for both. The positions and effects of QTLs were detected by Composite interval mapping (CIM) and the tests of pleiotropy versus close linkage was performed by Multi-trait CIM (Mt-CIM) (Jiang and Zeng, 1995), both implemented in QTL Cartographer v. 2.5 (Wang et al, 2007) with parameters described by Patil et al (2009). QTLs were declared at LOD !3.0 and those in identical, overlapping or adjacent marker intervals in a linkage group were treated as the same.…”