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Simonetti, Maria Carmela; Bellomo, M. P.; Laghetti, Gaetano; Perrino, P.; Simeone, Rosanna; Blanco, A.

doi:10.1023/a:1008602009133

Cited by 54 publications

(3 citation statements)

References 10 publications

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“…The QTL on 5AL (closest marker Xpsr918b-5A) had major effects on all spike traits, accounting for an average of 41.7% of the phenotypic variation for threshability over 2 yr, 59.8% for glume tenacity, 40.1% for spike length and 46.6% for spike compactness. The marker Xpsr145-5A has been used in the previous studies as a flanking marker of the Q gene conferring the free-threshing habit (Jantasuriyarat et al, 2004;Kato et al, 1998;Muramatsu, 1963;Simonetti et al, 1999;Simons et al, 2006). In the present study, this marker was also closely linked with these QTL above, although slightly farther compared with the Xpsr918b-5A.…”

Section: Quantitative Trait Loci For Spike Traitsmentioning

confidence: 51%

“…Based on common marker analysis, it was found that the QTL on 5AL, which had major effects on threshability and glume tenacity, corresponded to the domestication gene Q in wheat (Kato et al, 1998;Simonetti et al, 1999). This gene also largely affected the other two spike traits: spike length and compactness.…”

Section: Maintaining the Free-threshing Habit While Utilizing Spelt Amentioning

confidence: 99%

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Spelt as a Genetic Resource for Yield Component Improvement in Bread Wheat

2015

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Novel germplasm resources are required to broaden the genetic diversity of bread wheat (Triticum aestivum L.) for further yield improvement. In this study, the usefulness of spelt (T. spelta L.) as a genetic resource to improve yield components of bread wheat was determined. A recombinant inbred line mapping population of bread wheat Forno and spelt Oberkulmer was used to quantify the yield components. Subsequently, quantitative trait loci (QTL) for yield components, together with grain threshability traits, were identified. Oberkulmer had larger grains (in 2012 season), more fertile tillers, higher biomass, longer and laxer spikes than Forno. Quantitative trait locus analysis revealed six alleles for low threshability and two for tenacious glumes from the spelt, and the Q gene had major effects. Furthermore, 40 favorable alleles for yield components were detected from Oberkulmer, and 83% of them were independent of those for low threshability and tenacious glumes. Therefore, spelt is a useful genetic resource for yield component improvement of bread wheat, while maintaining the free‐threshing habit. In addition, most of QTL for grain number components were coincident with those for grain weight. Allelic analysis of the coincident QTL showed that increased grain number was associated with decreased grain weight, which explained their negative phenotypic relationships.

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Section: Quantitative Trait Loci For Spike Traitsmentioning

confidence: 51%

Section: Maintaining the Free-threshing Habit While Utilizing Spelt Amentioning

confidence: 99%

Spelt as a Genetic Resource for Yield Component Improvement in Bread Wheat

2015

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“…In tetraploid wheat, FT varieties have the Q allele on chromosome 5AL (Muramatsu, 1986). A recent study by Simonetti et al (1999) proved that both Tg and Q are active in the tetraploid, as in the hexaploid wheat, and that they occupy homologous loci on chromosomes 2BS (l Tg2) and 5AL (l Q2). The same authors indicate the existence of two further loci on chromosomes 5AS and 6AS that might play an additional role in FT.…”

Section: Discussionmentioning

confidence: 99%

Molecular linkage map of Einkorn wheat: mapping of storage-protein and soft-glume genes and bread-making quality QTLs

Taenzler¹,

Esposti²,

Vaccino³

et al. 2002

Genet. Res.

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Two molecular maps of Triticum monococcum L were produced and integrated. The integrated map includes a total of 477 markers, 32 RFLPs, 438 AFLPs, one morphological (soft glume (Sog)) and six storage-protein markers, and covers 856 cM. The trait Sog with the recessive allele sog maps to linkage group 2S. Probably, this is the T. monococcum homologue of Tg and Tg2 in hexaploid and tetraploid wheats, respectively. Loci coding for seed storage proteins were allocated to chromosomes 1L (HMW GLU1,2 and Glu1), 1S (LMW GLU6,7, LMW GLU1-4, omega GLI1-4, gamma GLI5 and Gli-1) and 6L (alpha/beta GLI7-14). Parameters related to bread-making quality (SDS sedimentation volume, specific sedimentation volume (SSV) and total protein content) were studied in one of the two populations. A QTL that is consistently present across environments was detected for SDS sedimentation volume and for SSV. The position of the QTL on chromosome 1S was in close agreement with the map positions of storage-protein loci. A second QTL was mapped on chromosome 5. For protein content, two significant QTLs were mapped to linkage groups 1 and 5.

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