تقييم بعض الصفات الإنتاجية و النوعية لطرز من الذرة البيضاء [ Sorghum Bicolor L. Moench ] لظروف الاجهاد المائي خلال مرحلة امتلاء الحبوب = Evaluation of Some Productivity and Quality Traits of Some Sorghum [ Sorghum Bicolor L. Moench ] Genotypes under Water Stress Conditions during Grain Filling Stage

2015 ◽  
Vol 11 (3) ◽  
pp. 871-882
Author(s):  
ريم الإدلبي ◽  
محمود صبوح ◽  
غسان اللحام
Keyword(s):  
Water Stress ◽  
Sorghum Bicolor ◽  
Grain Filling ◽  
Stress Conditions ◽  
Quality Traits ◽  
Filling Stage ◽  
Grain Filling Stage ◽  
Sorghum Bicolor L

scholarly journals CHANGES IN WHOLE-PLANT METABOLISM DURING GRAIN-FILLING STAGE IN SORGHUM BICOLOR L. (MOENCH) GROWN UNDER ELEVATED CO2 AND DROUGHT

2015 ◽  
pp. pp.01054.2015 ◽  
Author(s):  
Amanda Pereira de Souza ◽  
Jean-Christophe Cocuron ◽  
Ana Carolina Garcia ◽  
Ana Paula Alonso ◽  
Marcos S. Buckeridge
Keyword(s):  
Sorghum Bicolor ◽  
Elevated Co2 ◽  
Grain Filling ◽  
Plant Metabolism ◽  
Filling Stage ◽  
Whole Plant ◽  
Grain Filling Stage ◽  
Sorghum Bicolor L

scholarly journals Exogenously applied nutrients can improve the chickpea productivity under water stress conditions by modulating the antioxidant enzyme system

2022 ◽  
Vol 82 ◽  
Author(s):  
N. Hussain ◽  
A. Yasmeen ◽  
M. M. Yousaf ◽  
W. Malik ◽  
S. Naz ◽  
...  
Keyword(s):  
Water Stress ◽  
Potassium Chloride ◽  
Antioxidant Enzyme ◽  
Enzyme System ◽  
Foliar Spray ◽  
Growth Yield ◽  
Grain Filling ◽  
Stress Conditions ◽  
Antioxidant Enzyme System ◽  
Grain Filling Stage

Abstract Water stress is one of the major factor restricting the growth and development of chickpea plants by inducing various morphological and physiological changes. Therefore, the present research activity was designed to improve the chickpea productivity under water stress conditions by modulating antioxidant enzyme system. Experimental treatments comprised of two chickpea genotypes i.e. Bhakhar 2011 (drought tolerant) and DUSHT (drought sensitive), two water stress levels i.e. water stress at flowering stage and water stress at flowering + pod formation + grain filling stage including well watered (control) and three exogenous application of nutrients i.e. KCl 200 ppm, MgCl2, 50 ppm and CaCl2, 10 mM including distilled water (control). Results indicated that water stress at various growth stages adversely affects the growth, yield and quality attributes of both chickpea cultivars. Exogenous application of nutrients improved the growth, yield and antioxidant enzyme activities of both chickpea genotypes even under water stress conditions. However, superior results were obtained with foliar spray of potassium chloride on Bhakhar 2011 under well-watered conditions. Similarly, foliar spray of potassium chloride on chickpea cultivar Bhakhar 2011 cultivated under stress at flowering + pod formation + grain filling stage produced significantly higher contents of superoxide dismutase, peroxidase and catalase. These results suggests that the application of potassium chloride mitigates the adverse effects of water stress and enhanced tolerance in chickpea mainly due to higher antioxidant enzymes activity, demonstrating the protective measures of plant cells in stress conditions.

Comparison of physiological response to growth stage-based supplemental and conventional irrigation management of wheat

2021 ◽  
pp. 1-12
Author(s):  
Adnan Al-ghawry ◽  
Attila Yazar ◽  
Mustafa Unlu ◽  
Celaleddin Barutcular ◽  
Yeşim Bozkurt Çolak
Keyword(s):  
Water Stress ◽  
Stomatal Conductance ◽  
Grain Yield ◽  
Chlorophyll Content ◽  
Grain Filling ◽  
Wheat Crop ◽  
Supplemental Irrigation ◽  
Filling Stage ◽  
Grain Filling Stage ◽  
Conventional Irrigation

Abstract A field experiment was carried out to evaluate the effect of different conventional and supplemental irrigation strategies on leaf stomatal conductance (gs) and chlorophyll content (SPAD) yield and irrigation water productivity (IWP) of wheat using sprinkler line source in 2014 and 2015 in the Mediterranean region. The irrigation strategies were, supplemental irrigation (SI) during flowering and grain filling (SIFG), SI during grain filling (SIG), SI during flowering (SIF) and conventional irrigation (CI). These strategies were conducted under four irrigation levels 25, 50, 75, 100% and a rain-fed as control. The results indicated that CI100 and CI75 produced the greater grain yield and IWP, respectively. CI100 resulted in the increased chlorophyll content by 8.8% over rain-fed. The results confirmed that the SPAD and stomatal conductance values were not equally sensitive to water stress during growth stages. The wheat crop suffered a greater SPAD and gs reductions when the water stress occurred during the grain filling stage (SIF strategy) compared to other strategies, which means that the grain filling stage is more sensitive and effective to decrease the yield of winter wheat. The higher grain yields were achieved when the seasonal mean gs reached 207.4 mmol/m2s in CI and 169.2 mmol/m2s in SI, and the stomatal closure responded well to low, moderate and severe drought treatments. The leaf stomatal conductance (gs) was correlated linearly with grain yield. These relations could be used as a physiological indicator to evaluate water stress effect on the growth and productivity of wheat.

scholarly journals EFFECT OF DROUGHT STRESS ON YIELD AND QUALITY TRAITS OF COMMON WHEAT DURING GRAIN FILLING STAGE

2020 ◽  
pp. 236-244
Author(s):  
Ozgur TATAR ◽  
Ugur CAKALOGULLARI ◽  
Fatma AYKUT TONK ◽  
Deniz ISTIPLILER ◽  
Recep KARAKOC
Keyword(s):  
Drought Stress ◽  
Common Wheat ◽  
Grain Filling ◽  
Quality Traits ◽  
Filling Stage ◽  
Yield And Quality ◽  
Grain Filling Stage

scholarly journals Effect of foliar application of iron and zinc on nutrient uptake and grain yield of wheat under different irrigation regimes

2018 ◽  
Vol 43 (3) ◽  
pp. 395-406 ◽  
Author(s):  
S Sultana ◽  
HM Naser ◽  
MA Quddus ◽  
NC Shill ◽  
MA Hossain
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Foliar Application ◽  
Grain Filling ◽  
Root Initiation ◽  
Crown Root ◽  
Filling Stage ◽  
Water Stress Condition ◽  
Iron And Zinc ◽  
Grain Filling Stage

A field experiment was carried out to study the zinc-iron relationship in wheat (BARI Gom-26) plant grown under water stress condition in the field near net house of Soil Science Division, BARI, Joydebpur, Gazipur, during November 2015 to March 2016. The experiment was designed in a split plot on sixteen treatments comprising four irrigation treatments (regular irrigation, stopping irrigation at crown root initiation, stopping irrigation at booting stage and stopping irrigation at grain filling stage) and four foliar application of zinc and iron (control, 0.05% of zinc, 0.05% of iron and 0.05% of zinc +0.05% of iron). Zinc sulphate monohydrate (ZnSO4. H2O) and ferrous sulphate (FeSO4. H2O) were used as a source of Zn and Fe. The highest yield (4.01 t ha-1) was recorded in stopping irrigation at grain filling stage which was identical with regular irrigation. Water stress at crown root initiation stage had the most negative effect on growth and yield. Foliar application of zinc and iron played a major role on yield and yield components of wheat at later stages of growth. The results obtained from the present research showed that iron and zinc spray increased grain yield and quality of wheat and improved the effects caused by drought stress.Bangladesh J. Agril. Res. 43(3): 395-406, September 2018

scholarly journals Antioxidant status and their enhancements strategies for water stress tolerance in chickpea

2022 ◽  
Vol 82 ◽  
Author(s):  
N. Hussain ◽  
A. Yasmeen ◽  
M. M. Yousaf
Keyword(s):  
Water Stress ◽  
Stress Tolerance ◽  
Antioxidant Status ◽  
Growth Yield ◽  
Grain Filling ◽  
Filling Stage ◽  
Yield And Quality ◽  
Water Stress Tolerance ◽  
Grain Filling Stage ◽  
Chickpea Cultivars

Abstract Water stress executes severe influences on the plant growth and development through modifying physio-chemical properties. Therefore, a field experiment was designed to evaluate the antioxidant status and their enhancements strategies for water stress tolerance in chickpea on loam and clay loam soils under agro-ecological conditions of Arid Zone Research Institute, Bahawalpur (29.3871 °N, 71.653 °E) and Cholistan farm near Derawer (28.19°N, 71.80°E) of Southern Punjab, Pakistan during winter 2014-15. Experimental treatments comprised of two chickpea cultivars i.e. Bhakhar 2011 (drought tolerant) and DUSHT (drought sensitive), two water stress levels i.e. water stress at flowering stage and water stress at flowering + pod formation + grain filling stage including well watered (control) and two exogenous application of osmoprotectants i.e. glycine betaine (GB) 20 ppm and proline 10 uM including distilled water (control). Results indicated that water stress at various growth stages adversely affects the growth, yield and quality attributes of both chickpea cultivars. Exogenous application of GB and proline improved the growth, yield and quality parameters of both chickpea cultivars even under water stress conditions. However, superior results were obtained with exogenously applied GB on Bhakhar 2011 under well-watered conditions. Similarly, foliar spray of GB on chickpea cultivar Bhakhar 2011 under stress at flowering + pod formation + grain filling stage produced maximum superoxide dismutase, peroxidase and catalase contents. These results suggested that application of GB mitigates the adverse effects of water stress and enhanced tolerance in chickpea mainly due to higher antioxidant enzymes activity, demonstrating the protective measures of plant cells in stress condition. Hence, antioxidants status might be a suitable method for illustrating water stress tolerance in chickpea.

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