Journal of New Approaches in Water Engineering and Environment
Scientific Journal

Assessment Effect of LED Light on Water Productivity, Photosynthetic Pigments and Morphologic Characteristics of Wheat in Early Stages of Growth under Drought Stress

Document Type : Original Article

Authors

vahid shamsabadi 1
Sayyed Mohammad Javad Mirzaei 1
mohammadnaser modoodi 2
Hossein Nastari Nasrabadi 3
Mahdi Moradi 2

1 Department of Water Sciences and Engineering, University of Torbat-e Jam, Torbat-e Jam, Iran

2 Department of Horticulture Plants, University of Torbat-e Jam, Torbat-e Jam, Iran.

3 Department of Horticulture Plants, University of Torbat-e Jam, Torbat-e Jam, Iran

https://doi.org/10.22034/nawee.2024.459360.1082
Abstract
In order to investigate the effects of drought stress and different LED lights spectra on yield, water productivity and morphologic characteristics of wheat plant, a factorial experiment was performed in the form of completely randomized design in 2022 in the university of Torbat-e Jam, The effects of drought stress include three levels (100, 75 and 50 percent of water requirements) and the effect of different light spectra including six levels (white, 70% red + 30% blue, 100% red, 70% blue + 30% red, 100% blue and 50% red + 50% blue) on wheat plant was investigated. The results showed that by applying drought stress to the amount of 75 and 50% of the water requirement of the plant, fresh weight of aerial parts, dry weight of aerial parts, root fresh weight, root dry weight, plant length, chlorophyll a, chlorophyll b, total chlorophyll, carotenoids, potassium, phosphorus and magnesium concentration decreased and water productivity increased by 18.52% and 27.94% respectively. Also, the results showed that among the different types of LED light spectra application, the highest amount of fresh and dry weight of aerial parts, fresh and dry weight of roots, plant length and water productivity in 70% red + 30% blue light and the highest amount of photosynthetic pigments parameters were obtained in wheat plant under 50% red + 50% blue light. the results showed that the highest concentration of potassium occurred in 100% red light, phosphorus concentration in white light and magnesium concentration in 50% red + 50% blue light.

Keywords

Chlorophyll
Deficit Irrigation
Element
Light Spectrum
Yield
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Journal of New Approaches in Water Engineering and Environment
Volume 3, Issue 1
March 2024
Pages 176-189

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