Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat
Date
2022-04-04ISI journal
Impact factor: 4.658 (Year: 2022)
Author(s)
Citation
Sahar Bennani, Ahmed Birouk, Mohammed Jlibene, Miguel Sanchez-Garcia, Nasserlehaq Nsarellah, Fatima Gaboun, Wuletaw Tadesse. (4/4/2022). Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat. Plants, 11 (7).
Abstract
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 “Tdu-RuM_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
DSpace URI
https://hdl.handle.net/20.500.11766/67321Collections
- Agricultural Research Knowledge [12811]
Author(s) ORCID(s)
Sanchez-Garcia, Miguelhttps://orcid.org/0000-0002-9257-4583
Tadesse, Wuletawhttps://orcid.org/0000-0003-1175-3502
Subject(s)
AGROVOC Keywords
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