Elite durum wheat genetic map and recombination rate variation in a multiparental connected design

Vaissayre, Laurence; Ardisson, Morgane; Borries, C.; Santoni, Sylvain; David, Jacques; Roumet, Pierre

doi:10.1007/s10681-012-0627-y

Cited by 4 publications

(5 citation statements)

References 63 publications

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“…Our consensus genetic map (3488 cM) is longer than other durum or cultivated emmer maps [2635 cM (Maccaferri et al 2014 )], and SNP-based maps of wild wheat [2258 cM (Avni et al 2014 )]. This kind of difference between genetic map lengths in durum wheat has already been reported (Leflon et al 2010 ; Vaissayre et al 2012 ). Here, the increased map length could be due to a high per se recombination rate of the Lloyd cultivar, which has already been detected in a previous study (Vaissayre et al 2012 ).…”

Section: Discussionsupporting

confidence: 64%

“…This kind of difference between genetic map lengths in durum wheat has already been reported (Leflon et al 2010 ; Vaissayre et al 2012 ). Here, the increased map length could be due to a high per se recombination rate of the Lloyd cultivar, which has already been detected in a previous study (Vaissayre et al 2012 ). Variations in recombination rate among genotypes have also be documented and tested in other species (Esch et al 2007 ).…”

Section: Discussionsupporting

confidence: 64%

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Epistatic determinism of durum wheat resistance to the wheat spindle streak mosaic virus

et al. 2017

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Key message The resistance of durum wheat to the Wheat spindle streak mosaic virus (WSSMV) is controlled by two main QTLs on chromosomes 7A and 7B, with a huge epistatic effect. Abstract Wheat spindle streak mosaic virus (WSSMV) is a major disease of durum wheat in Europe and North America. Breeding WSSMV-resistant cultivars is currently the only way to control the virus since no treatment is available. This paper reports studies of the inheritance of WSSMV resistance using two related durum wheat populations obtained by crossing two elite cultivars with a WSSMV-resistant emmer cultivar. In 2012 and 2015, 354 recombinant inbred lines (RIL) were phenotyped using visual notations, ELISA and qPCR and genotyped using locus targeted capture and sequencing. This allowed us to build a consensus genetic map of 8568 markers and identify three chromosomal regions involved in WSSMV resistance. Two major regions (located on chromosomes 7A and 7B) jointly explain, on the basis of epistatic interactions, up to 43% of the phenotypic variation. Flanking sequences of our genetic markers are provided to facilitate future marker-assisted selection of WSSMV-resistant cultivars.Electronic supplementary materialThe online version of this article (doi:10.1007/s00122-017-2904-6) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 64%

Section: Discussionsupporting

confidence: 64%

Epistatic determinism of durum wheat resistance to the wheat spindle streak mosaic virus

et al. 2017

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“…bread wheat), have therefore facilitated genotyping of secondary crops such as tetraploid wheat. Map resolution has thus been improved [ 10 , 13 – 15 ], while facilitating the delimitation of chromosome regions involved in the control of agronomical traits [ 16 ], and relevant comparisons of local recombination rates have been published [ 17 ]. Moreover, bridging information from different single cross maps has allowed high density consensus maps to be built based on several thousand markers.…”

Section: Introductionmentioning

confidence: 99%

Genotyping by Sequencing Using Specific Allelic Capture to Build a High-Density Genetic Map of Durum Wheat

et al. 2016

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Targeted sequence capture is a promising technology which helps reduce costs for sequencing and genotyping numerous genomic regions in large sets of individuals. Bait sequences are designed to capture specific alleles previously discovered in parents or reference populations. We studied a set of 135 RILs originating from a cross between an emmer cultivar (Dic2) and a recent durum elite cultivar (Silur). Six thousand sequence baits were designed to target Dic2 vs. Silur polymorphisms discovered in a previous RNAseq study. These baits were exposed to genomic DNA of the RIL population. Eighty percent of the targeted SNPs were recovered, 65% of which were of high quality and coverage. The final high density genetic map consisted of more than 3,000 markers, whose genetic and physical mapping were consistent with those obtained with large arrays.

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“…Similarly, a higher number of linkage groups was also reported in durum wheat. For example, 21 linkage groups were reported for JK × Ch1 (Nachit et al, 2001), 18 for MDM (Elouafi and Nachit, 2004), 23 for the K/S map (Maccaferri et al, 2008), 25 for Meridiano × Claudio, 20 for Colosseo × Lloyd (Trebbi et al, 2011), and 26 for consensus parental maps (Vaissayre et al, 2012), instead of 14 linkage groups of durum wheat. In the present study, the linkage map was constructed with 866 markers, which is higher than that used for most of the previous published maps (Suenaga et al, 2005;Semagn et al, 2006;Nalini et al, 2007).…”

Section: Linkage Groupsmentioning

confidence: 99%

High levels of segregation distortion in the molecular linkage map of bread wheat representing the West Asia and North Africa region

Baloch¹,

Alsaleh²,

Andeden³

et al. 2016

Turk J Agric For

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The Fertile Crescent is a primary center of wheat domestication and diversity. Despite its importance for bread wheat breeding, few efforts have been made to fully understand the genetic structure of the Anatolian bread wheat. A lack of information regarding the genetic structure of the bread wheat from this region is evident. Therefore, this study aimed to provide new insights into the genetic structure of bread wheat from Anatolia. A genetic linkage map was constructed based on recombinant inbred lines derived from a cross between the Turkish cultivar Gerek-79 and the Moroccan cultivar Arrehane, by using DArT markers anchored with simple sequence repeat markers. This map consisted of 54 linkage groups belonging to 21 bread wheat chromosomes, spanning a total of 935.629 cM. The total number of mapped markers varied from 5 to 87, depending on the chromosome. Seventy-seven DArT markers with unpublished chromosomal locations were mapped on different chromosomes, whereas 23 were mapped onto chromosomes that deviated from those detailed in the literature. This linkage map represents a key starting point towards our understanding of the genome structure of Anatolian bread wheat, which would, in turn, permit us to genetically dissect important agromorphological and quality characteristics. This linkage map will be useful for the identification of QTL for biotic and abiotic stresses, and for important agronomic traits that are valuable for Anatolian wheat.

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Elite durum wheat genetic map and recombination rate variation in a multiparental connected design

Cited by 4 publications

References 63 publications

Epistatic determinism of durum wheat resistance to the wheat spindle streak mosaic virus

Epistatic determinism of durum wheat resistance to the wheat spindle streak mosaic virus

Genotyping by Sequencing Using Specific Allelic Capture to Build a High-Density Genetic Map of Durum Wheat

High levels of segregation distortion in the molecular linkage map of bread wheat representing the West Asia and North Africa region

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