Evaluation of wheat genotypes and some soil properties under saline water irrigation

Hamam, K. A.; Negim, Osama

doi:10.1016/j.aoas.2014.11.002

Cited by 30 publications

(29 citation statements)

References 38 publications

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“…Under our experimental conditions, salinity, induced a significant reduction in both shoot fresh weight and shoot length in the nine cultivars selected for the study except in OM grown in the presence of 100 mM NaCl. This result is in line with the finding that plant biomass and plant height are useful traits for screening of bread [71,72] and durum wheat [73] for salt tolerance. Leaf expansion is known to be sensitive to a water stress in many species [74].…”

Section: Traits Related To Growth and Developmentsupporting

confidence: 89%

Identification of Phenotypic and Physiological Markers of Salt Stress Tolerance in Durum Wheat (Triticum durum Desf.) through Integrated Analyses

et al. 2019

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Salinity is one of the most important stresses that reduces plant growth and productivity in several parts of the world. Nine Tunisian durum wheat genotypes grown under hydroponic conditions were subjected to two levels of salt stress (100 and 170 mM NaCl) for 21 days. An integrative analysis revealing the impact of salinity on key phenotypic and physiological marker traits was then conducted. Principal component analysis grouped these traits into three different clusters corresponding to the absence of salt stress and the two levels of salt stress. This analysis also allowed the identification of genotypes exhibiting various levels of tolerance to NaCl. Among the nine genotypes of Triticum durum Desf., cultivar Om Rabiaa was the most tolerant whereas cultivar Mahmoudi genotype was the most sensitive. Following the multivariate analysis of the examined phenotypic and physiological traits, we found that shoot length, shoot fresh weight, leaf area, the whole-plant stable isotope ratios of nitrogen (δ15N), shoot ammonium and proline contents, and shoot glutamine synthetase activity could be used as markers for the selection of salt-tolerant wheat genotypes.

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Section: Traits Related To Growth and Developmentsupporting

confidence: 89%

Identification of Phenotypic and Physiological Markers of Salt Stress Tolerance in Durum Wheat (Triticum durum Desf.) through Integrated Analyses

et al. 2019

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“…The model has been tested on rice crop; however, it could be tested also on other crop species. An example application on wheat crop (c.v. Goumria-19 and Line 103) from data published in Hamam and Negim (2014) is presented in Figure 4. The prediction of the model for these two wheat cultivars was relatively good (Figure 4).…”

Section: Discussionmentioning

confidence: 99%

“…Comparison of measured and simulated relative yield (Y r ) at different value of shoot-K/Na during the experiments ofHamam and Negim (2014) for Goumria-19 and Line 103 (b) wheat cultivars under five salinity levels (0 mM, 25 mM, 50 mM, 75 mM and 100 mM NaCl). Values of the adjustable coefficient β 1 are mentioned in the chart.…”

mentioning

confidence: 99%

Predicting Rice Yield Under Salinity Stress Using K/Na Ratio Variable in Plant Tissue

Mel

Bado²,

Ndiaye

et al. 2019

Communications in Soil Science and Plant Analysis

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Estimation of yield reduction in crop caused by the salinity stress is mostly based on variations of soil electrical conductivity and the severity of water stress. Crop response curves to salinity were developed without considering ion toxicity and nutritional imbalance in the plant. The objective of this study was to explore the possibility of using the ratio of the concentration of potassium by sodium in rice leaf (leaf-K/Na) to predict yield under the salinity stress. The rice (Oryza sativa L.) yield under fresh and saline condition and the leaf-K/Na related database was created. Data were collected from consecutive three seasons of a field experiment in the Africa Rice Center experimental farm in Senegal (16°11ʹ N, 16°15ʹW). We studied the relationship between the relative yield (Y r), a ratio of yield under the salinity stress to the potential yield and the leaf-K/Na (x). Furthermore, we did regression analyses and F-test to determine the best fitting function. Results indicate that the exponential function [i.e. Y r = 100 exp (-b x)] was the best fitting model with the lowest root mean square error (9.683) and the highest R 2 value (0.90). Example applications on independent data from published papers showed relatively good predictions, suggesting that the model can be used to predict rice yield in saline soils.

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“…, Abdi et al. , Hamam and Negim , Rameeh ). However, a study in wheat found that correlations between GMP and yield under the stressed condition used to calculate GMP became non‐significant as the severity of drought stress increased (Sio‐Se Mardeh et al.…”

Section: Introductionmentioning

confidence: 99%

Genotype Rankings for Nutrient Stress Resistance are Unrelated to Stress Severity in Cultivated Sunflower (Helianthus annuus L.)

Bowsher

Shelby

Ahmed

et al. 2016

J Agronomy Crop Science

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Abiotic stress limits crop productivity worldwide, making stress‐resistant crops a major goal for improving food security. Stress resistance is often assessed by comparing genotypes under a single control and stressed level of an abiotic factor, then ranking the genotypes’ overall performance, using a metric like geometric mean productivity (GMP). However, abiotic stress is rarely a presence/absence phenomenon, but often varies continuously. Here, we tested whether the common practice of assessing performance using a single control and stress level is predictive of performance across a range of stress levels. Twelve sunflower genotypes were grown in the greenhouse under one of eight nutrient levels (from non‐limiting to severely limiting) and assessed for performance (shoot dry mass at the budding stage) and related traits at both seedling and budding stages. Contrary to expectations, genotype rankings for GMP were consistent regardless of the two nutrient levels used to calculate GMP. This suggests that, for nutrient stress in sunflower, studies using an arbitrary control and stress level are broadly representative: genotypes with high GMP exhibit high GMP regardless of the nutrient levels used. In addition, GMP values were highly correlated with performance in the respective nutrient levels from which they were calculated; thus, higher GMP for a given genotype indicates that it performed well (relative to other genotypes) under both stressed and non‐stressed conditions. Together, these findings strongly support the current paradigm of comparing genotypes at a single control and stress level as a valid strategy for screening for nutrient stress resistance in sunflower. However, few traits were consistently associated with performance (shoot dry mass) at either high‐ or low‐nutrient availability, and seedling traits were rarely predictive of budding‐stage traits and performance, suggesting further studies are needed to determine the mechanisms underlying nutrient stress resistance in this important oilseed crop.

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Evaluation of wheat genotypes and some soil properties under saline water irrigation

Cited by 30 publications

References 38 publications

Identification of Phenotypic and Physiological Markers of Salt Stress Tolerance in Durum Wheat (Triticum durum Desf.) through Integrated Analyses

Identification of Phenotypic and Physiological Markers of Salt Stress Tolerance in Durum Wheat (Triticum durum Desf.) through Integrated Analyses

Predicting Rice Yield Under Salinity Stress Using K/Na Ratio Variable in Plant Tissue

Genotype Rankings for Nutrient Stress Resistance are Unrelated to Stress Severity in Cultivated Sunflower (Helianthus annuus L.)

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