Unexpectedly Good Soft Wheat Quality from a Hard × Soft Cross

Kongraksawech, Teepakorn; Ross, Andrew; Peterson, C. J.; Heesacker, Adam; Larson, Milton B.

doi:10.1094/cchem-02-14-0024-r

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…Carter et al [5] reported QTLs for break flour yield on chromosomes 3B and 4D. A QTL for total flour yield on chromosome 2B was previously identified as being associated with both flour yield and break flour yield [6,7]. For flour color, polyphenol oxidase genes (Ppo) on group 2 chromosomes and phytoene synthase genes (Psy) on group 7 chromosomes have been well studied due to their relationships with the discoloration and yellowness of products, respectively [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Multifamily QTL analysis and comprehensive design of genotypes for high-quality soft wheat

et al. 2020

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Milling properties and flour color are essential selection criteria in soft wheat breeding. However, high phenotypic screening costs restrict selection to relatively few breeding lines in late generations. To achieve marker-based selection of these traits in early generations, we performed genetic dissection of quality traits using three doubled haploid populations that shared the high-quality soft wheat variety Kitahonami as the paternal parent. An amplicon sequencing approach allowed effective construction of well-saturated linkage maps of the populations. Marker-based heritability estimates revealed that target quality traits had relatively high values, indicating the possibility of selection in early generations. Taking advantage of Chinese Spring reference sequences, joint linkage maps of the three populations were generated. Based on the maps, multifamily quantitative trait locus (QTL) analysis revealed a total of 86 QTLs for ten traits investigated. In terms of target quality traits, 12 QTLs were detected for flour yield, and 12 were detected for flour redness (a* value). Among these QTLs, six for flour yield and nine for flour a* were segregating in more than two populations. Some relationships among traits were explained by QTL collocations on chromosomes, especially group 7 chromosomes. Ten different ideotypes with various combinations of favorable alleles for the flour yield and flour a* QTLs were generated. Phenotypes of derivatives from these ideotypes were predicted to design ideal genotypes for highquality wheat. Simulations revealed the possibility of breeding varieties with better quality than Kitahonami.

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