scholarly journals Effects of lycopene on hydroponic growth and productivity of Amaranthus hybridus L. under aluminium toxicity induced stress

2014 ◽  
Vol 13 (49) ◽  
pp. 4476-4491
Author(s):  
Obi Sergius Udengwu ◽  
Uchenna Oliver Egedigwe
Keyword(s):  
Aluminium Toxicity ◽  
Amaranthus Hybridus ◽  
Induced Stress ◽  
Hydroponic Growth

scholarly journals Mitigating Effects of Beta-Carotene on Hydroponic Growth and Productivity of Amaranthus Hybridus L. under Aluminium Toxicity Induced Stress

2021 ◽  
Author(s):  
Uchenna Oliver Egedigwe ◽  
Obi Sergius Udengwu
Keyword(s):  
Beta Carotene ◽  
Al Toxicity ◽  
Sub Saharan Africa ◽  
Aluminium Chloride ◽  
Amaranthus Hybridus ◽  
Stress Situation ◽  
Al Stress ◽  
Induced Stress ◽  
Β Carotene ◽  
Hydroponic Growth

Abstract Aluminium (Al) toxicity is one of the major sources of environmental stress that limit plant growth and productivity in many acidic soils, especially in the tropics and sub-tropics. Al toxicity subsequently leads to food insecurity in developing countries, especially in sub-Saharan Africa. Though plants can synthesize their antioxidants; the need exists to investigate whether under Al toxicity-induced stress; beta-carotene (β-Carotene) supplementation could ameliorate the stress situation and enhance growth and productivity. A 3× 10− 2 mM aluminium chloride (AlCl3) at pH 4.6 was used to stress plants. β-Carotene was extracted from carrots and high-performance liquid chromatography (HPLC) was used to determine its peak absorbance at 295 nm. β-Carotene's activity was determined using the thiobarbituric acid method. The effects of 50 and 200 µM concentrations of β-Carotene on the hydroponic growth of Amaranthus hybridus, subjected to Al stress, were evaluated in this study. Pre- and post- β-Carotene treatments were applied to A. hybridus seedlings before and after Al treatment for 72 h. Results showed that post- β-Carotene treatments significantly ameliorated plants from Al stress when compared to pre- β-Carotene treatments. Higher doses of β-Carotene significantly increased leaf number, plant height, length and number of inflorescence, fresh and dry weights of shoot, root and inflorescence but significantly decreased root length. The present study suggests that plants of A. hybridus were susceptible to Al toxicity-induced stress and post-β-Carotene supplementation could significantly ameliorate the stress situation and enhance growth and productivity. However, intrinsic antioxidants could be adequate for plants not subjected to stress.

Review of Coping with war induced stress.

1996 ◽  
Vol 41 (2) ◽  
pp. 192-192
Author(s):  
Terri Gullickson
Keyword(s):  
Induced Stress

Loading-Induced Stress Response in the Intervertebral Disc

2014 ◽  
Vol 4 (1_suppl) ◽  
pp. s-0034-1376604-s-0034-1376604
Author(s):  
W. H. Chooi ◽  
S. C. Chan ◽  
B. Gantenbein-Ritter ◽  
B. P. Chan
Keyword(s):  
Stress Response ◽  
Intervertebral Disc ◽  
Induced Stress

Smart Plant Growth Control and Monitoring System for Indoor Hydroponic Farming

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Fina Supegina
Keyword(s):  
Water Level ◽  
Monitoring System ◽  
Growth Control ◽  
Set Point ◽  
Water Solvent ◽  
Growth Room ◽  
Smart Control ◽  
Level Sensor ◽  
Planting Method ◽  
Hydroponic Growth

Hydroponics is one of planting method that use water as a medium of plants growth, in this technique, mineral solution added into the water solvent, allowing the nutrient uptake process by the plants.  Farming by hydroponic method must pay attention to the following parameters namely, temperature, humidity, the level of water needs and nutrients and also the level of sunlight need for photosynthesis process.  This research used hydroponic technique in hydroponic growth room, and  there is a LED growth light as an alternate of sunlight, due to this room is closed without sunlight.  There are outputs displayed in monitoring system namely, temperature sensor, humidity sensor, ultrasound sensor to detect height of the plant and water level sensor to measured height of the water as a medium of the plant.  Results of measured sensor in hydroponic growth room explained as the following:  fan cooler worked when temperature , and humidity  .  Water pump worked when water level is less than 50% accordance set point.  Control on LED Growth Light and LED Bulb when LDR sensor reached set point > 500 in bright condition, and < 500 in dark condition respectively. The average of Time update/received data in thing speak web is 2.4 second. Keywords: Smart Control, Hydroponic, IoT, Monitoring

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