Major quality trait analysis and QTL detection in hexaploid wheat in humid rain-fed agriculture

Li, H M; Tang, Zongxiang; Zhang, H Q; Yan, Bin; Ren, Zhenzhen

doi:10.4238/2013.may.21.5

Cited by 12 publications

(14 citation statements)

References 33 publications

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“…Depending on the populations, the QTL explaining the largest variance of protein content in durum wheat was found on different chromosomes, such as 2A ( Blanco et al, 2006 ), 5B ( Golabadi et al, 2012 ), and 5A ( Marcotuli et al, 2017 ). Similarly, in hexaploid wheat, the number of QTL controlling protein content were reported on different chromosomes ( Börner et al, 2002 ; Sun et al, 2008 ; Wang et al, 2012 ; Li et al, 2013 ; Terasawa et al, 2016 ; Tiwari et al, 2016 ; Zou et al, 2017 ). These results suggest the complex inheritance of grain protein and the strong influence of the underlying population and the environment.…”

Section: Discussionmentioning

confidence: 99%

Haplotype Loci Under Selection in Canadian Durum Wheat Germplasm Over 60 Years of Breeding: Association With Grain Yield, Quality Traits, Protein Loss, and Plant Height

et al. 2018

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Durum wheat was introduced in the southern prairies of western Canada in the late nineteenth century. Breeding efforts have mainly focused on improving quality traits to meet the pasta industry demands. For this study, 192 durum wheat lines were genotyped using the Illumina 90K Infinium iSelect assay, and resulted in a total of 14,324 polymorphic SNPs. Genetic diversity changed over time, declining during the first 20 years of breeding in Canada, then increased in the late 1980s and early 1990s. We scanned the genome for signatures of selection, using the total variance Fst-based outlier detection method (Lositan), the hierarchical island model (Arlequin) and the Bayesian genome scan method (BayeScan). A total of 407 outliers were identified and clustered into 84 LD-based haplotype loci, spanning all 14 chromosomes of the durum wheat genome. The association analysis detected 54 haplotype loci, of which 39% contained markers with a complete reversal of allelic state. This tendency to fixation of favorable alleles corroborates the success of the Canadian durum wheat breeding programs over time. Twenty-one haplotype loci were associated with multiple traits. In particular, hap_4B_1 explained 20.6, 17.9 and 16.6% of the phenotypic variance of pigment loss, pasta b∗ and dough extensibility, respectively. The locus hap_2B_9 explained 15.9 and 17.8% of the variation of protein content and protein loss, respectively. All these pleiotropic haplotype loci offer breeders the unique opportunity for further improving multiple traits, facilitating marker-assisted selection in durum wheat, and could help in identifying genes as functional annotations of the wheat genome become available.

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Section: Discussionmentioning

confidence: 99%

Haplotype Loci Under Selection in Canadian Durum Wheat Germplasm Over 60 Years of Breeding: Association With Grain Yield, Quality Traits, Protein Loss, and Plant Height

et al. 2018

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“…The genetic architecture of wheat quality traits has been frequently studied through classical linkage mapping in bi-parental populations Elangovan et al 2008;Li et al 2013;McCartney et al 2006;Nelson et al 2006;Parker et al 1999;Prasad et al 2003;Reif et al 2011b;Schmidt et al 2004;Sun et al 2008Sun et al , 2010. The genetic architecture of wheat quality traits has been frequently studied through classical linkage mapping in bi-parental populations Elangovan et al 2008;Li et al 2013;McCartney et al 2006;Nelson et al 2006;Parker et al 1999;Prasad et al 2003;Reif et al 2011b;Schmidt et al 2004;Sun et al 2008Sun et al , 2010.…”

Section: Introductionmentioning

confidence: 99%

Identification of milling and baking quality QTL in multiple soft wheat mapping populations

Cabrera

Guttieri

Smith³

et al. 2015

Theor Appl Genet

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Two mapping approaches were use to identify and validate milling and baking quality QTL in soft wheat. Two LG were consistently found important for multiple traits and we recommend the use marker-assisted selection on specific markers reported here. Wheat-derived food products require a range of characteristics. Identification and understanding of the genetic components controlling end-use quality of wheat is important for crop improvement. We assessed the underlying genetics controlling specific milling and baking quality parameters of soft wheat including flour yield, softness equivalent, flour protein, sucrose, sodium carbonate, water absorption and lactic acid, solvent retention capacities in a diversity panel and five bi-parental mapping populations. The populations were genotyped with SSR and DArT markers, with markers specific for the 1BL.1RS translocation and sucrose synthase gene. Association analysis and composite interval mapping were performed to identify quantitative trait loci (QTL). High heritability was observed for each of the traits evaluated, trait correlations were consistent over populations, and transgressive segregants were common in all bi-parental populations. A total of 26 regions were identified as potential QTL in the diversity panel and 74 QTL were identified across all five bi-parental mapping populations. Collinearity of QTL from chromosomes 1B and 2B was observed across mapping populations and was consistent with results from the association analysis in the diversity panel. Multiple regression analysis showed the importance of the two 1B and 2B regions and marker-assisted selection for the favorable alleles at these regions should improve quality.

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“…The growing area of staple crops such as cereals is increasingly extending into environments that require different adaptations of pollen development. For instance, tropical rice is grown in temperate climate zones and temperate climate wheat is grown in humid tropical environments [310][311][312]. Air humidity and climatic conditions modifying atmospheric humidity (rain, fog, cold, heat and drought) have a dramatic effect on plant species producing orthodox and recalcitrant pollen, causing asynchrony and reducing pollen number and fertility.…”

Section: Discussionmentioning

confidence: 99%

The Trials and Tribulations of the Plant Male Gametophyte — Understanding Reproductive Stage Stress Tolerance

Pacini¹

2016

Abiotic and Biotic Stress in Plants - Recent Advances and Future Perspectives

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Yield and productivity of many crop species depend on successful reproductive development to produce seeds or fruits for human nutrition. Plants determine the right time to flower based on environmental cues (day length, temperature) and angiosperms have evolved a plethora of mechanisms to adapt flowering to specific environmental conditions. Despite these adaptation mechanisms, fertilisation and seed production remain subject to the reigning weather conditions before and during flowering. To fertilise the immobile female gametes inside the ovule, the male gametophytes need to be dispersed in a hostile environment. In crop plants, unexpected inclement weather conditions during male gametophyte development and pollen dispersal are often associated with dramatic yield losses. Molecular and physiological studies are gradually making progress in identifying genes and processes that control various aspects of pollen development, but the many intricacies involved in environmental control of pollen development and-in particular-regulation of male fertility remain poorly understood. The aim of this paper is to draw attention to the enormous amount of complexity and biodiversity that exist in angiosperm male gametophyte development. A better understanding of the strategies that exist in adapting pollen production and fertility to environmental challenges may ultimately benefit improvement of abiotic stress tolerance in major food crops.

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Major quality trait analysis and QTL detection in hexaploid wheat in humid rain-fed agriculture

Cited by 12 publications

References 33 publications

Haplotype Loci Under Selection in Canadian Durum Wheat Germplasm Over 60 Years of Breeding: Association With Grain Yield, Quality Traits, Protein Loss, and Plant Height

Haplotype Loci Under Selection in Canadian Durum Wheat Germplasm Over 60 Years of Breeding: Association With Grain Yield, Quality Traits, Protein Loss, and Plant Height

Identification of milling and baking quality QTL in multiple soft wheat mapping populations

The Trials and Tribulations of the Plant Male Gametophyte — Understanding Reproductive Stage Stress Tolerance

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