Quantitative trait loci conferring grain selenium nutrient in durum wheat × wild emmer wheat RIL population

Jun Yan, Wen-Tao Xue, Rong-Zhi Yang, Hai-Bo Qin, Gang Zhao, Fahima Tzion and Jian-Ping Cheng
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Jun Yan: Key Laboratory of Coarse Cereal Processing in Ministry of Agriculture, School of Pharmacy and Bioengineering, Chengdu University, Chengdu, P.R. China
Wen-Tao Xue: College of Agriculture, Guizhou University, Guiyang, P.R. China
Rong-Zhi Yang: College of Agriculture, Guizhou University, Guiyang, P.R. China
Hai-Bo Qin: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, P.R. China
Gang Zhao: Key Laboratory of Coarse Cereal Processing in Ministry of Agriculture, School of Pharmacy and Bioengineering, Chengdu University, Chengdu, P.R. China
Fahima Tzion: Institute of Evolution, University of Haifa, Haifa, Israel
Jian-Ping Cheng: College of Agriculture, Guizhou University, Guiyang, P.R. China

Czech Journal of Genetics and Plant Breeding, 2018, vol. 54, issue 2, 52-58

Abstract: The genetic and phenotypic basis of grain selenium concentration (GSeC) and yield per plant (GSeY) was studied in a tetraploid wheat population consisting of 152 F6 recombinant inbred lines (RILs) derived from a cross between Triticum dicoccoides (accession G18-16) and durum wheat cultivar Langdon (LDN) grown under three different environments over 2 years. Wide genetic variation was found among RILs for GSeC and GSeY. A total of 15 QTL effects on 9 chromosomes associated with GSeC and GSeY were detected, with a logarithm od the odds (LOD) score ranging from ca. 3.2 to 11.7, explaining 1.4% to 18.6% of the phenotypic variation. Higher GSeC and GSeY were conferred by the G18-16 allele at 10 loci and by the LDN allele at 5 loci. Seven QTLs showed interactions with environmental conditions. Five genomic regions harbouring QTLs for grain Se concentrations and yields were selected for further marker-assisted selection programs, facilitating the use of wild alleles for improvement of elite wheat cultivars.

Keywords: grain selenium concentration; grain selenium yield; quantitative trait locus mapping; tetraploid wheat; Triticum dicoccoides (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:54:y:2018:i:2:id:112-2016-cjgpb

DOI: 10.17221/112/2016-CJGPB

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