Interaction between mild NaCl salinity and sublethal SO2 pollution on wheat Triticum aestivum cultivar ‘Wilgoyne’ (Ciano/Gallo). I. Responses of stomatal conductance, photosynthesis, growth and assimilate partitioning

1994 ◽  
Vol 48 (2) ◽  
pp. 163-178 ◽  
Author(s):  
Longbin Huang ◽  
Frank Murray ◽  
Xiaohong Yang
Keyword(s):  
Triticum Aestivum ◽  
Stomatal Conductance ◽  
Assimilate Partitioning ◽  
Nacl Salinity ◽  
So2 Pollution

scholarly journals Physiological and Biochemical Response of Winter Wheat (Triticum Aestivum L.) to Ambient O3 and the Antiozonant Chemical Ethylenediurea (EDU) in Jeddah, Saudi Arabia

2018 ◽  
Vol 11 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Laila A. Baqasi ◽  
Huda A. Qari ◽  
Ibrahim A. Hassan
Keyword(s):  
Triticum Aestivum ◽  
Stomatal Conductance ◽  
Growth Yield ◽  
Growing Season ◽  
Triticum Aestivum L ◽  
Field Conditions ◽  
Growth And Yield ◽  
Photosynthetic Rates ◽  
Promising Tool ◽  
Physiological And Biochemical

This study was to conducted to investigate the use of ethylenediurea (EDU) as a possible tool to evaluate O3 effects on wheat (Triticum aestivum L.) plants under field conditions in Jeddah. Wheat plants were expsoed to ambient O3 (AA) and the antiozonant chemical ethylenediurea (EDU) in closed fumigation chambers for the full growing season. Growth, yield and physiology were determined in response to O3 and/or EDU. EDU-treated plants had higher photosynthetic rates (24%) and stomatal conductance (25%), which were reflected in higher growth and yield in terms of number of grains. The present study revealed that EDU could be used as a promising tool to mitigate damaging effects of O3 on under field conditions. EDU protected wheat plants leading to increases in photosynthetic rates, growth and yield.

Effect of NaCl Salinity on the Growth and Yield of Inqlab Wheat (Triticum aestivum L.) Variety

2005 ◽  
Vol 1 (1) ◽  
pp. 34-40 ◽  
Author(s):  
I. Rajpar . ◽  
Y.M. Khanif . ◽  
F.M. Soomro . ◽  
J.K. Suthar .
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L ◽  
Growth And Yield ◽  
Nacl Salinity

scholarly journals Potassium and calcium enrichment alleviate salinity-induced stress in hydroponically grown endives

2010 ◽  
Vol 37 (No. 4) ◽  
pp. 155-162 ◽  
Author(s):  
N.G. Tzortzakis
Keyword(s):  
Stomatal Conductance ◽  
Plant Growth ◽  
Photosynthetic Rate ◽  
Crop Yields ◽  
Nutrient Balance ◽  
Calcium Nitrate ◽  
Foliar Spray ◽  
Leafy Vegetables ◽  
Nacl Salinity ◽  
Nutrient Film Technique

Salinity either of soil or of irrigation water causes disturbance in plant growth and nutrient balance and reduces crop yields. The effects of NaCl salinity and/or calcium or potassium level on the plant growth and severity of gray mold (Botrytis cinerea [De Bary] Whetzel) were investigated in endive (Cichorium endivia L., cv. Green Curled) grown with the nutrient film technique under greenhouse conditions during early spring. Plants were supplied with nutrient solutions containing 40 mmol/l of sodium chloride (NaCl) and/or 10 mmol/l potassium sulphate (K<sub>2</sub>SO<sub>4</sub>). Additionally, plants treated with foliar spray of 15 mmol/l calcium nitrate [(CaNO<sub>3</sub>)<sub>2</sub>] or distilled water. Salinity or K- and Ca-enrichment mainly affected the upper part of endive plants and reduced leaf area. However, when salinity combined with either K- or Ca-enrichment, the negative impact of salinity on plant growth was reversed. Salinized and/or K- and Ca-enriched, plants did not differ in plant biomass, leaf/root ratio, leaf fresh weight, leaf number, and root length. Salinity did not have any impacts on photosynthetic rate, stomatal conductance, and intercellular CO<sub>2</sub> concentration. Indeed, photosynthetic rate and stomatal conductance increased with Ca foliar application and decreased with K while the opposite effects were observed for the intercellular CO<sub>2</sub> concentration. Total nutrient uptake was reduced 2-fold in salt-treated plants compared to controls. No symptoms of tip-burn or blackheart were recorded throughout the experimental study. Endive grown in the nutrient film technique had tolerance to NaCl salinity, and this method could be used to exploit saline water in soilless culture. These findings also suggest that a proper management of the salt concentration of the nutrient solution plus external elemental enrichment may provide an efficient tool to improve the quality of leafy vegetables with little effect on yield.

scholarly journals Effects of Low Concentrations of Ozone (O3) on Metabolic and Physiological Attributes in Wheat (Triticum aestivum L.) Pants

2018 ◽  
Vol 11 (2) ◽  
pp. 929-934 ◽  
Author(s):  
Laila A. Baqasi ◽  
Huda A. Qari ◽  
Nihal Al-Nahhas ◽  
Reem H. Badr ◽  
Wafaa K. Taia ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Amino Acid ◽  
Stomatal Conductance ◽  
Protein Content ◽  
Stomatal Closure ◽  
Growth Yield ◽  
Ambient Air ◽  
Triticum Aestivum L ◽  
Growth And Yield ◽  
Photosynthetic Rates

Growth, yield, protein content, net photosynthetic rates, stomatal conductance and amino acid profiles were determined in wheat (Triticum aestivum L) plants in response to 50 ppb O3 during the growing season. This concentration is similar to the concentrations of O3 in ambient air. O3 decreased photosynthetic rates (24%) and stomatal conductance (25%), which were reflected in lower growth and yield in terms of number of grains and 100 grain weight. Scanning electron microscopy showed a collapse in the epidermal cells adjacent to stomata that led to stomatal closure and consequently reductions in stomatal conductance. The significance of O3-induced impairment of growth, yield and alteration in amino acid contents are discussed. To the best of our knowledge, this is the first study reporting impact of ozone on protein content, amino acids and yield of wheat in Saudi Arabia.

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