New QTL alleles for quality-related traits in spring wheat revealed by RIL population derived from supernumerary × non-supernumerary spikelet genotypes

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Morgan Echeverry-SolarteMohamed Mergoum

Abstract

A population developed from an exotic line with supernumerary spikelets was genetically dissected for eight quality traits, discovering new genes/alleles with potential use in wheat breeding programs. Identifying new QTLs and alleles in exotic germplasm is paramount for further improvement of quality traits in wheat. In the present study, an RIL population developed from a cross of an elite wheat line (WCB414) and an exotic genotype with supernumerary spikelets (SS) was used to identify QTLs and new alleles for eight quality traits. Composite interval mapping for 1,000 kernels weight (TKW), kernel volume weight (KVW), grain protein content (GPC), percent of flour extraction (FE) and four mixograph-related traits identified a total of 69 QTLs including 19 stable QTLs. These QTLs were located on 18 different chromosomes (except 4D, 5D, and 6D). Thirteen of these QTLs explained more than 15% of phenotypic variation (PV) and were considered as major QTLs. In this study, we identified 11 QTLs for TKW (R (2) = 7.2-17.1 %), 10 for KVW (R (2) = 6.7-22.5%), 11 for GPC (R (2) = 4.7-16.9%), 6 for FE (R (2) = 4.8-19%) and 31 for mixograph-related traits (R (2) = 3.2-41.2%). In this population, several previously identified QTLs for SS, nin...Continue Reading

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Citations

Dec 15, 2015·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Fa CuiJunming Li
Feb 26, 2019·G3 : Genes - Genomes - Genetics·Sepehr Mohajeri NaraghiMohamed Mergoum
Aug 23, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jian MaXiujin Lan
Jul 8, 2020·Molecular Biology Reports·Mohamed BarakatIbrahim Al-Ashkar
Aug 11, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Peng JiangXu Zhang

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