scholarly journals Improving Productivity of Some Bread Wheat Cultivars under Water Deficit Stress Using Endophytic Bacillus sp. NGB-WhE3

2022 ◽  
Vol 62 (1) ◽  
pp. 275-290
Author(s):  
Fayrouz H. Abd El-Megeed ◽  
Mohamed Mohiy
Keyword(s):  
Water Deficit ◽  
Bread Wheat ◽  
Water Deficit Stress ◽  
Bacillus Sp ◽  
Wheat Cultivars

scholarly journals Genome-Wide Association Mapping through 90K SNP Array for Quality and Yield Attributes in Bread Wheat against Water-Deficit Conditions

Agriculture ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 392
Author(s):  
Hafiz Ghulam Muhu-Din Ahmed ◽  
Muhammad Sajjad ◽  
Yawen Zeng ◽  
Muhammad Iqbal ◽  
Sultan Habibullah Khan ◽  
...  
Keyword(s):  
Grain Yield ◽  
Candidate Genes ◽  
Water Deficit ◽  
Bread Wheat ◽  
Genome Wide Association ◽  
Water Deficit Stress ◽  
Yield Attributes ◽  
Yield And Quality ◽  
Isolation And Characterization ◽  
Genome Wide

The decrease in water resources is a serious threat to food security world-wide. In this regard, a genome-wide association study (GWAS) was conducted to identify grain yield and quality-related genes/loci under normal and water-deficit conditions. Highly significant differences were exhibited among genotypes under both conditions for all studied traits. Water-deficit stress caused a reduction in grains yield and an increase in grains protein contents (GPC) and gluten contents (GLC). Population structure divided the 96 genotypes into four sub-populations. Out of 72 significant marker-trait associations (MTAs), 28 and 44 were observed under normal and water-deficit stress conditions, respectively. Pleiotropic loci (RAC875_s117925_244, BobWhite_c23828_341 and wsnp_CAP8_c334_304253) for yield and quality traits were identified on chromosomes 5A, 6B and 7B, respectively, under normal conditions. Under a water-deficit condition, the pleiotropic loci (Excalibur_c48047_90, Tdurum_contig100702_265 and BobWhite_c19429_95) for grain yield per plant (GYP), GPC and GLC were identified on chromosomes 3A, 4A and 7B, respectively. The pleiotropic loci (BS00063551_51 and RAC875_c28721_290) for GPC and GLC on chromosome 1B and 3A, respectively, were found under both conditions. Besides the validation of previously reported MTAs, some new MTAs were identified for flag leaf area (FLA), thousand grain weight (TGW), GYP, GPC and GLC under normal and water-deficit conditions. Twenty SNPs associated with the traits were mapped in the coding DNA sequence (CDS) of the respective candidate genes. The protein functions of the identified candidate genes were predicted and discussed. Isolation and characterization of the candidate genes, wherein, SNPs were mapped in CDS will result in discovering novel genes underpinning water-deficit tolerance in bread wheat.

scholarly journals Physiology and transcriptomics of water-deficit stress responses in wheat cultivars TAM 111 and TAM 112

2014 ◽  
Vol 171 (14) ◽  
pp. 1289-1298 ◽  
Author(s):  
Srirama Krishna Reddy ◽  
Shuyu Liu ◽  
Jackie C. Rudd ◽  
Qingwu Xue ◽  
Paxton Payton ◽  
...  
Keyword(s):  
Water Deficit ◽  
Stress Responses ◽  
Water Deficit Stress ◽  
Wheat Cultivars

Ascorbic acid alleviates water deficit induced growth inhibition in wheat seedlings by modulating levels of endogenous antioxidants

Biologia ◽  
2016 ◽  
Vol 71 (4) ◽  
Author(s):  
Navdeep Singh ◽  
Rachana D. Bhardwaj
Keyword(s):  
Ascorbic Acid ◽  
Water Deficit ◽  
Seed Priming ◽  
Antioxidant Response ◽  
Shoot Length ◽  
Water Deficit Stress ◽  
Wheat Cultivars ◽  
Wheat Seedlings ◽  
Drought Tolerant ◽  
Endogenous Antioxidants

AbstractThe present investigation envisaged the potential of ascorbic acid through seed priming on the seedling growth and antioxidant response in three wheat cultivars i.e., PBW 644 (Drought tolerant), PBW 621 and HD 2967 (Drought sensitive) grown under water deficit stress. Imposition of water deficit stress reduced the root and shoot lengths by more than 11% in PBW 644, 18% in PBW 621 and 9% in HD 2967. On exposure to water deficit stress, catalase (CAT) was upregulated in the roots of all the three cultivars but declined in the shoots. Ascorbate peroxidase (APX) activity increased in stressed plants of tolerant cultivar but declined in sensitive cultivars except the shoots of HD 2967. Under water deficit stress, seed priming with 400 μM of ascorbic acid increased shoot length of all the three cultivars by more than 19% when compared to stressed seedlings. Further, it enhanced the drought tolerance of PBW 644 by upregulating superoxide dismutase (SOD), CAT, APX and glutathione reductase (GR) enzymes accompanied by an increase in glycine betaine and H

scholarly journals Comparative Molecular and Metabolic Profiling of Two Contrasting Wheat Cultivars under Drought Stress

2021 ◽  
Vol 22 (24) ◽  
pp. 13287
Author(s):  
Hind Emad Fadoul ◽  
Félix Juan Martínez Rivas ◽  
Kerstin Neumann ◽  
Salma Balazadeh ◽  
Alisdair R. Fernie ◽  
...  
Keyword(s):  
Drought Stress ◽  
Water Deficit ◽  
High Performance ◽  
Crop Improvement ◽  
Transcriptional Factors ◽  
Partial Least Square ◽  
Least Square ◽  
Water Deficit Stress ◽  
Wheat Cultivars ◽  
Morphological Criteria

Drought is one of the most important threats to plants and agriculture; therefore, understanding of the mechanisms of drought tolerance is crucial for breeding of new tolerant varieties. Here, we assessed the effects of a long-term water deficit stress simulated on a precision phenotyping system on some morphological criteria and metabolite traits, as well as the expression of drought associated transcriptional factors of two contrasting drought-responsive African wheat cultivars, Condor and Wadielniel. The current study showed that under drought stress Wadielniel exhibits significant higher tillering and height compared to Condor. Further, we used gas chromatography and ultra-high performance liquid chromatography mass-spectrometry to identify compounds that change between the two cultivars upon drought. Partial least square discriminant analysis (PLS-DA) revealed that 50 metabolites with a possible role in drought stress regulation were significantly changed in both cultivars under water deficit stress. These metabolites included several amino acids, most notably proline, some organic acids, and lipid classes PC 36:3 and TAG 56:9, which were significantly altered under drought stress. Here, the results discussed in the context of understanding the mechanisms involved in the drought response of wheat cultivars, as the phenotype parameters, metabolite content and expression of drought associated transcriptional factors could also be used for potential crop improvement under drought stress.

scholarly journals Leaf proteome pattern of two bread wheat varieties under water deficit stress conditions

2020 ◽  
Vol 23 ◽  
pp. 100146
Author(s):  
Soheila Shayan ◽  
Majid Norouzi ◽  
Mohammad Moghaddam Vahed ◽  
Seyed Abolghasem Mohammadi ◽  
Mahmoud Toorchi
Keyword(s):  
Water Deficit ◽  
Bread Wheat ◽  
Stress Conditions ◽  
Water Deficit Stress ◽  
Wheat Varieties ◽  
Leaf Proteome

scholarly journals Generation Mean Analysis for Several Agronomic and Physiologic Traits in Bread Wheat under Normal and Water Deficit Stress Conditions

2017 ◽  
Vol 3 (2) ◽  
pp. 1-10 ◽  
Author(s):  
Bafrin Molaei ◽  
◽  
Mohammad Moghaddam ◽  
Seyed Siamak Alvaikia ◽  
Ali Bandeh-Hagh ◽  
...  
Keyword(s):  
Water Deficit ◽  
Bread Wheat ◽  
Stress Conditions ◽  
Water Deficit Stress ◽  
Generation Mean Analysis

The study of important agronomic traits by multivariate analysis in winter rapeseed cultivars

2014 ◽  
Vol 1 (1) ◽  
pp. 20-24
Author(s):  
Gader Ghaffari ◽  
Farhad Baghbani ◽  
Behnam Tahmasebpour
Keyword(s):  
Water Potential ◽  
Water Deficit ◽  
Leaf Water Potential ◽  
Seed Weight ◽  
Dry Weight ◽  
Total Variance ◽  
Water Deficit Stress ◽  
The Third ◽  
High Eigenvalue ◽  
Winter Rapeseed

In order to group winter rapeseed cultivars according to evaluated traits, an experiment was conducted in the Research Greenhouse of Agriculture Faculty, University of Tabriz - IRAN. In the experiment were included 12 cultivars of winter rapeseed and 3 levels of water deficit stress. Gypsum blocks were used to monitor soil moisture. Water deficit stress was imposed from stem elongation to physiological maturity. According to the principal component analysis, five principal components were chosen with greater eigenvalue (more than 0.7) that are including 81.34% of the primeval variance of variables. The first component that explained the 48.02% of total variance had the high eigenvalue. The second component could justify about 13.64% of total variance and had positive association with leaf water potential and proline content and had negative relationship with leaf stomatal conductivity. The third, fourth and fifth components expressed around, 10.18, 4.83 and 4.68% of the total variance respectively. The third component had the high eigenvalue for plant dry weight. The fourth component put 1000-seed weight, seed yield, Silique per Plant and root dry weight against plant dry weight, chlorophyll fluorescence and leaf water potential. The fifth component had the high eigenvalue for root dry weight, root volume and 1000-seed weight.

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