Genome wide association study of grain yield and yield related traits in spring bread wheat (Triticum aestivum L.) under drought and heat conditions in three different locations

Gataa, Zakaria El; Hanafi, Samira El; Basheer, Fadil; Kehel, Zakaria; bouhouch, Yassin; Messoadi, Khalil El; Eddakir, Kenza; Ladraa, Nawel; Samir, Karima; Tadesse, Wuletaw

doi:10.1007/s12892-021-00084-7

Cited by 8 publications

(8 citation statements)

References 44 publications

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“…Water stress tolerance as a trait can be assessed from correlated traits with high yield under these conditions or from drought indices which accurately assess the genotypic yield response to drought stress (Al-Naggar et al, 2020Shehab-Eldeen and Farhat, 2020, El Gataa et al, 2021, Morsy et al, 2021, and Nehe et al, 2021.…”

Section: Introductionmentioning

confidence: 99%

Response of Some Agronomic, Physiological and Anatomical characters for Some Bread Wheat Genotypes Under Water Deficit in North Delta Region

Farhat

Khedr

Shaaban

2021

Scientific Journal of Agricultural Sciences

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Two field experiments were performed on Sakha Agricultural Research Station Farm during 2017/18 and 2018/19 growing seasons, to study the agronomic, physiological, and anatomical response of eleven bread wheat cultivar and lines for two irrigation regimes levels (i.e., five irrigations, (recommended as control) and only one irrigation after 21 days planting (water stress)). Results showed that the agronomic (i.e., number of days to maturity, plant height, grain yield and its components), physiological (i.e., relative water content, and chlorophyll a & b) and anatomocal estimates (i.e., thickness of leaf lamina, cuticle layer, upper epidermis, lower epidermis, mesophyll tissue, midrib, main vascular bundle dimension (length and width), collenchyma tissue, xylem tissue, phloem tissue and bulliform cells) were decreased under water stress conditions, except for proline and leaf temperature. Line 1, Line 2, Sids 14, Giza 171 and Sakha 95 were the most tolerant genotypes and may be suitable for water shortage conditions. High values of relative water content , chlorophyll and proline contents, low values of flag leaf temperature, in addition to the lowest reduction in leaf anatomical characters may be useful selection criteria for water stress tolerance in bread wheat.

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Section: Introductionmentioning

confidence: 99%

Response of Some Agronomic, Physiological and Anatomical characters for Some Bread Wheat Genotypes Under Water Deficit in North Delta Region

Farhat

Khedr

Shaaban

2021

Scientific Journal of Agricultural Sciences

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“…We identified two other significant markers on chromosomes 2D and 4A. Several studies detected many MTAs/QTLs for grain yield in the same chromosomes [ 5 , 35 ]. In this study, we identified five MTAs for biomass in irrigated conditions, which are located on chromosomes 7A and 5B where the highest marker was ‘BS00022169_51’ located on chromosome 7A with −Log10(p) = 4.14 at position 691 Mbp, a previous study found the same marker on chromosome 7A [ 40 ].…”

Section: Discussionmentioning

confidence: 94%

“…Using molecular markers such as single nucleotide polymorphism (SNP) and diversity array technologies (DArT), marker-assisted selection (MAS) has become an essential strategy in wheat breeding for the development of novel adapted lines to biotic and abiotic stresses. Based on linkage disequilibrium (LD), a genome-wide association study (GWAS) is a strong method for identifying marker-trait associations (MTA) and quantitative trait loci (QTL) associated with the trait of interest [ 5 ]. GWAS employed a variety of statistical models, although the Mixed Linear Model (MLM) and the General Linear Model (GLM) were the most often used.…”

Section: Introductionmentioning

confidence: 99%

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Genetic Dissection of Drought Tolerance of Elite Bread Wheat (Triticum aestivum L.) Genotypes Using Genome Wide Association Study in Morocco

Gataa

Samir

Tadesse³

2022

Plants

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Drought is one of the most important yield-limiting factors in Morocco. Identification and deployment of drought-tolerant wheat varieties are important to cope with the challenge of terminal moisture stress and increase wheat productivity. A panel composed of 200 elite spring bread wheat genotypes was phenotyped for yield and agronomic traits for 2 years (2020 and 2021) in Morocco under rainfed and irrigated environments. The panel was genotyped using 20K SNPs and, after filtration, a total of 15,735 SNP markers were used for a genome-wide association study (GWAS) using a mixed linear model (MLM) to identify marker-trait associations (MTA) and putative genes associated with grain yield and yield-related traits under rainfed and irrigated conditions. Significant differences were observed among the elite genotypes for grain yield and yield-related traits. Grain yield performance ranged from 0.97 to 6.16 t/ha under rainfed conditions at Sidi Al-Aidi station and from 3.31 to 9.38 t/h under irrigated conditions at Sidi Al-Aidi station, while Grain yield at Merchouch station ranged from 2.32 to 6.16 t/h under rainfed condition. A total of 159 MTAs (p < 0.001) and 46 genes were discovered, with 67 MTAs recorded under rainfed conditions and 37 MTAs recorded under irrigated conditions at the Sidi Al-Aidi station, while 55 MTAs were recorded under rainfed conditions at Merchouch station. The marker ‘BobWhite_c2988_493’ on chromosome 2B was significantly correlated with grain yield under rainfed conditions. Under irrigated conditions, the marker ‘AX-94653560’ on chromosome 2D was significantly correlated with grain yield at Sidi Al-Aidi station. The maker ‘RAC875_c17918_321’ located on chromosome 4A, associated with grain yield was linked with the gene TraesCS4A02G322700, which encodes for F-box domain-containing protein. The markers and candidate genes discovered in this study should be further validated for their potential use in marker-assisted selection to generate high-yielding wheat genotypes with drought tolerance.

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“…In recent year a new approach "association mapping" has been developed as a promising technique to identify the genomic regions associated with plant traits. Genome wide association studies (GWAS) has become a choice of method for the identification of genomic regions of the complex quantitative traits in specifically designed plants population or germplasm collections (13). In GWAS a large panel of population with natural phenotypic variation is used which truly represent the genetic diversity available for different traits in a given region or country (14,15).…”

Section: Introductionmentioning

confidence: 99%

Association Mapping of Agronomic traits in Bread Wheat using a high Density 90k SNP Array

Sher¹,

Khan²,

Ali³

et al. 2021

PJBB

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A genome-wide association study (GWAS) was performed using a high-density infinium 90K SNP array. We identified a total markers traits associations (MTAs) (p ?0.000) for the following plant traits; days taken to 50% heading(DH), days to 50% maturity (DM), plant height (Ph) cm, flag leaf area cm2 (FLA), tillers number per plant, spike length (SL) cm and grain yield per plant (GP) g. Most of the SNPs were identified in the A and B genome as compared to the D genome. The significant associated SNPs were mainly distributed on the chromosome 2B, 3B, 5A, and 5B. Nine SNPs on chromosome 5A, 2B and 2D were identified having pleiotropic effects The correlation analysis showed a significant positive association among SL, NT, GP. Which depicted that these traits are promising for breeding high yielding wheat cultivars. This study provided useful information of the valuable genetic loci for marker-assisted breeding.

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Genome wide association study of grain yield and yield related traits in spring bread wheat (Triticum aestivum L.) under drought and heat conditions in three different locations

Cited by 8 publications

References 44 publications

Response of Some Agronomic, Physiological and Anatomical characters for Some Bread Wheat Genotypes Under Water Deficit in North Delta Region

Response of Some Agronomic, Physiological and Anatomical characters for Some Bread Wheat Genotypes Under Water Deficit in North Delta Region

Genetic Dissection of Drought Tolerance of Elite Bread Wheat (Triticum aestivum L.) Genotypes Using Genome Wide Association Study in Morocco

Association Mapping of Agronomic traits in Bread Wheat using a high Density 90k SNP Array

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