scholarly journals Effects of Water-Deficit Stress on Photosynthesis, Its Components and Component Limitations, and on Water Use Efficiency in Wheat (Triticum aestivum L.)

1992 ◽  
Vol 100 (2) ◽  
pp. 733-739 ◽  
Author(s):  
Bjorn Martin ◽  
Norma A. Ruiz-Torres
Keyword(s):  
Triticum Aestivum ◽  
Water Use Efficiency ◽  
Water Deficit ◽  
Water Use ◽  
Triticum Aestivum L ◽  
Water Deficit Stress ◽  
Use Efficiency

scholarly journals Increase maize productivity and water use efficiency through application of potassium silicate under water stress

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. A. Gomaa ◽  
Essam E. Kandil ◽  
Atef A. M. Zen El-Dein ◽  
Mamdouh E. M. Abou-Donia ◽  
Hayssam M. Ali ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Deficit ◽  
Water Use ◽  
Field Experiments ◽  
Foliar Application ◽  
Potassium Silicate ◽  
Water Deficit Stress ◽  
Maize Productivity ◽  
Use Efficiency

AbstractIn Egypt, water shortage has become a key limiting factor for agriculture. Water-deficit stress causes different morphological, physiological, and biochemical impacts on plants. Two field experiments were carried out at Etay El-Baroud Station, El-Beheira Governorate, Agriculture Research Center (ARC), Egypt, to evaluate the effect of potassium silicate (K-silicate) of maize productivity and water use efficiency (WUE). A split-plot system in the four replications was used under three irrigation intervals during the 2017 and 2018 seasons. Whereas 10, 15, and 20 days irrigation intervals were allocated in main plots, while the three foliar application treatments of K-silicate (one spray at 40 days after sowing; two sprays at 40 and 60 days; and three sprays at 40, 60, and 80 days, and a control (water spray) were distributed in the subplots. All the treatments were distributed in 4 replicates. The results indicated that irrigation every 15 days gave the highest yield in both components and quality. The highly significant of (WUE) under irrigation every 20 days. Foliar spraying of K-silicate three times resulted in the highest yield. Even under water-deficit stress, irrigation every fifteen days combined with foliar application of K-silicate three times achieved the highest values of grain yield and its components. These results show that K-silicate treatment can increase WUE and produce high grain yield requiring less irrigation.

In Winter Wheat (Triticum Aestivum L.), No-Till Improves Photosynthetic Nitrogen and Water-Use Efficiency

2019 ◽  
Vol 23 (1) ◽  
pp. 39-46
Author(s):  
Hazzar Habbib ◽  
Bertrand Hirel ◽  
Fabien Spicher ◽  
Frédéric Dubois ◽  
Thierry Tétu
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Water Use Efficiency ◽  
Water Use ◽  
Triticum Aestivum L ◽  
No Till ◽  
Use Efficiency

scholarly journals Genetic Variability of Drought Adaptive Traits in Nepalese Wheat (Triticum aestivum L.) Germplasm

2012 ◽  
pp. 64-68
Author(s):  
Dipendra Pokharel ◽  
Madhav Pandey
Keyword(s):  
Triticum Aestivum ◽  
Genetic Variability ◽  
Water Use Efficiency ◽  
Water Content ◽  
Water Use ◽  
Triticum Aestivum L ◽  
Leaf Water Content ◽  
Adaptive Traits ◽  
Wheat Genotypes ◽  
Use Efficiency

Wheat (Triticum aestivum L.) is one of the major cereal crops vital for global food supply. Most of the wheat crop in developing world including that of Nepal is either grown with limited irrigation or under rainfed conditions and thus face moisture stress at one or more growth stages limiting grain yield. An experiment was carried out at the Institute of Agriculture and Animal Science, Rampur, Nepal, to evaluate the genetic variability of selected drought adaptive traits in Nepalese wheat germplasm. The wheat genotypes evaluated comprised of Nepalese landraces and commercial cultivars, CIMMYT (International Center for Maize and Wheat Improvement) derived advanced introduction lines and three checks with differential drought adaptability. The wheat genotypes were grown in pots (single plant) arranged in a replicated split plot design in greenhouse under two contrasting moisture regimes, optimum and moisture stressed. The genotypes were evaluated for water use, water use efficiency, relative leaf water content and biomass production. The ANOVA (Analysis of Variance) revealed significant variation between environments and among the wheat genotypes for most of the traits studied. A wide range of variability was observed for water use, water use efficiency, biomass yield and relative leaf water content in moisture stressed and non–stressed environments. Nepalese cultivar Gautam showed a number of favorable drought adaptive traits, whereas, Bhrikuti was average in this respect. Based on the scores of drought adaptive traits recently released Cultivar (cv). Vijay was characterized as drought sensitive. A number of landraces and advanced breeding lines showed high level of water use efficiency and other positive traits for drought adaptation. DOI: http://dx.doi.org/10.3126/hn.v11i1.7208 Hydro Nepal Special Issue: Conference Proceedings 2012 pp.64-68

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