Drought Tolerance Screening in Thirty Common Wheat (Triticum aestivum L.) Genotypes

Din, Ajmalud; Ahmad, Munir; Watto, Fahad Masoud; Ahmed, Sheraz; Ali, Imtiaz; Shah, Muhammad Kausar Nawaz

doi:10.17582/journal.sja/2020/36.1.168.177

Cited by 4 publications

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“…Relative water content reveals plant water status and is considered an index of dehydration stress tolerance (Dehnavi et al, 2017 andMarček et al, 2019). In addition, Relative water content reveals is considered to be a good index to detect the water stress-tolerant genotypes (Din et al, 2020). The reduction in leaf relative water content ultimately leads to reducing growth and biomass production (Wasaya et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

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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: Discussionmentioning

confidence: 99%

“…At the level of physiological response, there were decreasing effects on relative water and chlorophyll contents under water stress (Wasaya et al, 2021). In contrast, proline and leaf temperature was reported to be increased under the water stress conditions (El-Gammaal, 2018, Din et al, 2020and Mu et al, 2021.…”

Section: Introductionmentioning

confidence: 95%

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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“…There is no direct approach available to screen genotypes for drought stress tolerance in wheat or any other crop. Therefore, screening and exploiting local germplasms for physio-morphological attributes is a gateway to overcome this environmental constraint [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Incredible Role of Osmotic Adjustment in Grain Yield Sustainability under Water Scarcity Conditions in Wheat (Triticum aestivum L.)

Mahmood

Abdullah

Ahmar

et al. 2020

Plants

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Interrogations of local germplasm and landraces can offer a foundation and genetic basis for drought tolerance in wheat. Potential of drought tolerance in a panel of 30 wheat genotypes including varieties, local landraces, and wild crosses were explored under drought stress (DS) and well-watered (WW) conditions. Considerable variation for an osmotic adjustment (OA) and yield components, coupled with genotype and environment interaction was observed, which indicates the differential potential of wheat genotypes under both conditions. Reduction in yield per plant (YP), thousand kernel weight (TKW), and induction of OA was detected. Correlation analysis revealed a strong positive association of YP with directly contributing yield components under both environments, indicating the impotence of these traits as a selection-criteria for the screening of drought-tolerant genotypes for drylands worldwide. Subsequently, the association of OA with TKW which contributes directly to YP, indicates that wheat attains OA to extract more water from the soil under low water-potential. Genotypes including WC-4, WC-8 and LLR-29 showed more TKW under both conditions, among them; LLR-29 also has maximum OA and batter yield comparatively. Result provides insight into the role of OA in plant yield sustainability under DS. In this study, we figure out the concept of OA and its incredible role in sustainable plant yield in wheat.

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“…Because of the high genotypic variation found across all traits, the study's germplasm pool may be a valuable source of genetic diversity for breeding. Due to different genotypic responses, the germplasm pool can be used to identify a genotype that performs better under water stress [44]. All of the genotypes used in this study were selected from various pedigrees, and most of the traits found are quantitatively inherited, enabling the genotypes to react to the environment in different ways.…”

Section: Discussionmentioning

confidence: 99%

Screening of Wheat (Triticum aestivum L.) Genotypes for Drought Tolerance through Agronomic and Physiological Response

et al. 2022

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Water scarcity is a major challenge to wheat productivity under changing climate conditions, especially in arid and semi-arid regions. During recent years, different agronomic, physiological and molecular approaches have been used to overcome the problems related to drought stress. Breeding approaches, including conventional and modern breeding, are among the most efficient options to overcome drought stress through the development of new varieties adapted to drought. Growing drought-tolerant wheat genotypes may be a sustainable option to boost wheat productivity under drought stress conditions. Therefore, the present study was conducted with the aim to screen different wheat genotypes based on stress tolerance levels. For this purpose, eleven commonly cultivated wheat genotypes (V1 = Akbar-2019, V2 = Ghazi-2019, V3 = Ujala-2016, V4 = Zincol-2016, V5 = Anaj-2017, V6 = Galaxy-2013, V7 = Pakistan-2013, V8 = Seher-2006, V9 = Lasani-2008, V10 = Faisalabad-2008 and V11 = Millat-2011) were grown in pots filled with soil under well-watered (WW, 70% of field capacity) and water stress (WS, 35% of field capacity) conditions. Treatments were arranged under a completely randomized design (CRD) with three replicates. Data on yield and yield-related traits (tillers/plant, spikelets/spike, grains/spike, 100 grain weight, seed and biological yield) and physio-biochemical (chlorophyll contents, relative water content, membrane stability index, leaf nitrogen, phosphorus, and potassium content) attributes were recorded in this experiment. Our results showed that drought stress significantly affected the morpho-physiological, and biochemical attributes in all tested wheat varieties. Among the genotypes, all traits were found to be significantly (p < 0.05) higher in wheat genotype Faisalabad-2008, including biological yield (9.50 g plant−1) and seed yield (3.39 g plant−1), which was also proven to be more drought tolerant than the other tested genotypes. The higher biological and grain yield of genotype Faisalabad-2008 was mainly attributed to greater numbers of tillers/plant and spikelets/spike compared to the other tested genotypes. The wheat genotype Galaxy-2013 had significantly lower biological (7.43 g plant−1) and seed yield (2.11 g plant−1) than all other tested genotypes, and was classified as a drought-sensitive genotype. For the genotypes, under drought stress, biological and grain yield decreased in the order V10 > V2 > V1 > V4 > V7 > V11 > V9 > V8 > V3 > V6. These results suggest that screening for drought-tolerant genotypes may be a more viable option to minimize drought-induced effects on wheat in drought-prone regions.

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Drought Tolerance Screening in Thirty Common Wheat (Triticum aestivum L.) Genotypes

Cited by 4 publications

References 0 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

Incredible Role of Osmotic Adjustment in Grain Yield Sustainability under Water Scarcity Conditions in Wheat (Triticum aestivum L.)

Screening of Wheat (Triticum aestivum L.) Genotypes for Drought Tolerance through Agronomic and Physiological Response

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