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Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat

The present research aims to identify the efficient combination of drought-tolerance selection criteria and associated quantitative trait loci. A panel of 197 bread wheat genotypes was evaluated for yield- and drought-tolerance-related traits in two environments (favorable and semiarid) for 2 years...

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Autores principales: Bennani, Sahar, Birouk, Ahmed, Jlibene, Mohammed, Sanchez-Garcia, Miguel, Nsarellah, Nasserelhaq, Gaboun, Fatima, Tadesse, Wuletaw
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002858/
https://www.ncbi.nlm.nih.gov/pubmed/35406966
http://dx.doi.org/10.3390/plants11070986
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author Bennani, Sahar
Birouk, Ahmed
Jlibene, Mohammed
Sanchez-Garcia, Miguel
Nsarellah, Nasserelhaq
Gaboun, Fatima
Tadesse, Wuletaw
author_facet Bennani, Sahar
Birouk, Ahmed
Jlibene, Mohammed
Sanchez-Garcia, Miguel
Nsarellah, Nasserelhaq
Gaboun, Fatima
Tadesse, Wuletaw
author_sort Bennani, Sahar
collection PubMed
description The present research aims to identify the efficient combination of drought-tolerance selection criteria and associated quantitative trait loci. A panel of 197 bread wheat genotypes was evaluated for yield- and drought-tolerance-related traits in two environments (favorable and semiarid) for 2 years (2015–2016). Grain number, biomass, number of fertile spikes per plant and ground cover exhibited a significant correlation with grain yield and constitute potential secondary selection criteria for yield under drought conditions. About 73 significant marker–trait associations were detected along various chromosomal positions. The markers “wsnp_Ex_Rep_c67786_66472676” and “ExcalibuR_c24593_1217” exhibited important genetic gains associated with yield increase under drought (11 and 7%, respectively). The markers “KukRi_c94792_127” and “wsnp_Ex_c298_580660” showed a significant correlation with grain yield, biomass and grain number and were associated with a significant increase in yield performance at the semiarid site (+6 and +7%, respectively). The ground cover was found associated with grain yield and biomass through the markers “wsnp_Ex_Rep_c67786_66472676” (+11%) and “KukRi_c49927_151” (+10%). One marker “TduRuM_contig25432_1377” on chromosome 5B at 20 cM was consistently correlated with the number of fertile spikes across both environments. Further research should be considered to validate the efficiency of these markers to undertake selection for drought tolerance under various environments and genetic backgrounds.
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spelling pubmed-90028582022-04-13 Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat Bennani, Sahar Birouk, Ahmed Jlibene, Mohammed Sanchez-Garcia, Miguel Nsarellah, Nasserelhaq Gaboun, Fatima Tadesse, Wuletaw Plants (Basel) Article The present research aims to identify the efficient combination of drought-tolerance selection criteria and associated quantitative trait loci. A panel of 197 bread wheat genotypes was evaluated for yield- and drought-tolerance-related traits in two environments (favorable and semiarid) for 2 years (2015–2016). Grain number, biomass, number of fertile spikes per plant and ground cover exhibited a significant correlation with grain yield and constitute potential secondary selection criteria for yield under drought conditions. About 73 significant marker–trait associations were detected along various chromosomal positions. The markers “wsnp_Ex_Rep_c67786_66472676” and “ExcalibuR_c24593_1217” exhibited important genetic gains associated with yield increase under drought (11 and 7%, respectively). The markers “KukRi_c94792_127” and “wsnp_Ex_c298_580660” showed a significant correlation with grain yield, biomass and grain number and were associated with a significant increase in yield performance at the semiarid site (+6 and +7%, respectively). The ground cover was found associated with grain yield and biomass through the markers “wsnp_Ex_Rep_c67786_66472676” (+11%) and “KukRi_c49927_151” (+10%). One marker “TduRuM_contig25432_1377” on chromosome 5B at 20 cM was consistently correlated with the number of fertile spikes across both environments. Further research should be considered to validate the efficiency of these markers to undertake selection for drought tolerance under various environments and genetic backgrounds. MDPI 2022-04-04 /pmc/articles/PMC9002858/ /pubmed/35406966 http://dx.doi.org/10.3390/plants11070986 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bennani, Sahar
Birouk, Ahmed
Jlibene, Mohammed
Sanchez-Garcia, Miguel
Nsarellah, Nasserelhaq
Gaboun, Fatima
Tadesse, Wuletaw
Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat
title Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat
title_full Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat
title_fullStr Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat
title_full_unstemmed Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat
title_short Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat
title_sort drought-tolerance qtls associated with grain yield and related traits in spring bread wheat
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002858/
https://www.ncbi.nlm.nih.gov/pubmed/35406966
http://dx.doi.org/10.3390/plants11070986
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