Effect of Contaminated Water with Laundry Detergent on Foxtail Millet Root and Physiological Traits

摘要

Foxtail millet is a short life cycle plant and known as a drought tolerant crop. Nowadays, contaminated wastewater with laundry detergent is used for irrigation. A pot experiment was conducted to evaluate the effect of contaminated water with laundry detergent on foxtail millet root and physiological traits. Contaminated water (concentration of 0, 0.1, 1 and 10 g I-1 of laundry detergent) and irrigation interval (1, 2 and 3 days) made the factors. Results showed that drought and contamination decreased chlorophyll, root number, root dry weight, root volume and root surface area. High concentrations of laundry detergent decreased the leaf relative water content. The sodium content of root was increased under drought and moderate concentration of laundry detergent, but the root potassium content was decreased by drought and detergent.