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QTL mapping for grain yield and three yield components in a population derived from two high-yielding spring wheat cultivars.
Theor Appl Genet. 2021 Jul; 134(7):2079-2095.TA

Abstract

KEY MESSAGE

Four genomic regions on chromosomes 4A, 6A, 7B, and 7D were discovered, each with multiple tightly linked QTL (QTL clusters) associated with two to three yield components. The 7D QTL cluster was associated with grain yield, fertile spikelet number per spike, thousand kernel weight, and heading date. It was located in the flanking region of FT-D1, a homolog gene of Arabidopsis FLOWERING LOCUS T, a major gene that regulates wheat flowering. Genetic manipulation of yield components is an important approach to increase grain yield in wheat (Triticum aestivum). The present study used a mapping population comprised of 181 doubled haploid lines derived from two high-yielding spring wheat cultivars, UI Platinum and LCS Star. The two cultivars and the derived population were assessed for six traits in eight field trials primarily in Idaho in the USA. The six traits were grain yield, fertile spikelet number per spike, productive tiller number per unit area, thousand kernel weight, heading date, and plant height. Quantitative Trait Locus (QTL) analysis of the six traits was conducted using 14,236 single-nucleotide polymorphism (SNP) markers generated from the wheat 90 K SNP and the exome and promoter capture arrays. Of the 19 QTL detected, 14 were clustered in four chromosomal regions on 4A, 6A, 7B and 7D. Each of the four QTL clusters was associated with multiple yield component traits, and these traits were often negatively correlated with one another. As a result, additional QTL dissection studies are needed to optimize trade-offs among yield component traits for specific production environments. Kompetitive allele-specific PCR markers for the four QTL clusters were developed and assessed in an elite spring wheat panel of 170 lines, and eight of the 14 QTL were validated. The two parents contain complementary alleles for the four QTL clusters, suggesting the possibility of improving grain yield via genetic recombination of yield component loci.

Authors+Show Affiliations

Department of Plant Sciences, University of Idaho, Aberdeen, ID, USA.Department of Plant Sciences, University of Idaho, Aberdeen, ID, USA.Department of Plant Sciences, University of Idaho, Aberdeen, ID, USA.Department of Plant Sciences, University of Idaho, Aberdeen, ID, USA.Department of Plant Sciences, University of Idaho, Aberdeen, ID, USA.Department of Plant Sciences, Kansas State University, Manhattan, KS, USA.Department of Plant Sciences, University of Idaho, Aberdeen, ID, USA. jchen@uidaho.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33687497

Citation

Isham, Kyle, et al. "QTL Mapping for Grain Yield and Three Yield Components in a Population Derived From Two High-yielding Spring Wheat Cultivars." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 134, no. 7, 2021, pp. 2079-2095.
Isham K, Wang R, Zhao W, et al. QTL mapping for grain yield and three yield components in a population derived from two high-yielding spring wheat cultivars. Theor Appl Genet. 2021;134(7):2079-2095.
Isham, K., Wang, R., Zhao, W., Wheeler, J., Klassen, N., Akhunov, E., & Chen, J. (2021). QTL mapping for grain yield and three yield components in a population derived from two high-yielding spring wheat cultivars. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 134(7), 2079-2095. https://doi.org/10.1007/s00122-021-03806-1
Isham K, et al. QTL Mapping for Grain Yield and Three Yield Components in a Population Derived From Two High-yielding Spring Wheat Cultivars. Theor Appl Genet. 2021;134(7):2079-2095. PubMed PMID: 33687497.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - QTL mapping for grain yield and three yield components in a population derived from two high-yielding spring wheat cultivars. AU - Isham,Kyle, AU - Wang,Rui, AU - Zhao,Weidong, AU - Wheeler,Justin, AU - Klassen,Natalie, AU - Akhunov,Eduard, AU - Chen,Jianli, Y1 - 2021/03/09/ PY - 2020/08/05/received PY - 2021/02/24/accepted PY - 2021/3/10/pubmed PY - 2021/9/23/medline PY - 2021/3/9/entrez SP - 2079 EP - 2095 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 134 IS - 7 N2 - KEY MESSAGE: Four genomic regions on chromosomes 4A, 6A, 7B, and 7D were discovered, each with multiple tightly linked QTL (QTL clusters) associated with two to three yield components. The 7D QTL cluster was associated with grain yield, fertile spikelet number per spike, thousand kernel weight, and heading date. It was located in the flanking region of FT-D1, a homolog gene of Arabidopsis FLOWERING LOCUS T, a major gene that regulates wheat flowering. Genetic manipulation of yield components is an important approach to increase grain yield in wheat (Triticum aestivum). The present study used a mapping population comprised of 181 doubled haploid lines derived from two high-yielding spring wheat cultivars, UI Platinum and LCS Star. The two cultivars and the derived population were assessed for six traits in eight field trials primarily in Idaho in the USA. The six traits were grain yield, fertile spikelet number per spike, productive tiller number per unit area, thousand kernel weight, heading date, and plant height. Quantitative Trait Locus (QTL) analysis of the six traits was conducted using 14,236 single-nucleotide polymorphism (SNP) markers generated from the wheat 90 K SNP and the exome and promoter capture arrays. Of the 19 QTL detected, 14 were clustered in four chromosomal regions on 4A, 6A, 7B and 7D. Each of the four QTL clusters was associated with multiple yield component traits, and these traits were often negatively correlated with one another. As a result, additional QTL dissection studies are needed to optimize trade-offs among yield component traits for specific production environments. Kompetitive allele-specific PCR markers for the four QTL clusters were developed and assessed in an elite spring wheat panel of 170 lines, and eight of the 14 QTL were validated. The two parents contain complementary alleles for the four QTL clusters, suggesting the possibility of improving grain yield via genetic recombination of yield component loci. SN - 1432-2242 UR - https://www.unboundmedicine.com/medline/citation/33687497/QTL_mapping_for_grain_yield_and_three_yield_components_in_a_population_derived_from_two_high_yielding_spring_wheat_cultivars_ L2 - https://dx.doi.org/10.1007/s00122-021-03806-1 DB - PRIME DP - Unbound Medicine ER -