Abstract
The physiological characteristics and resistance capacity of the submerged macrophyte, Myriophyllum spicatum, under different external NH4Cl concentrations in sediments, were investigated in lab-scale tanks. Experimental results indicated that the growth, bioremediation capacity and enzyme activity of M. spicatum were affected by external sediment NH4Cl concentrations, along with time. When external NH4Cl concentrations in sediments were <200mg/kg, the N in sediments was assimilated and improved plant growth. When external NH4Cl concentration was >400mg/kg, the RGR decreased markedly and the MDA content increased obviously. Simultaneously, the SOD and POD activity in plant remained constant, or even decreased in some cases, suggesting that the stress resistance of M. spicatum was inhibited. Currently, there is little information about the physiological response of submerged macrophytes at different external nutrient concentrations in sediments. Therefore, the present study can provide theoretical foundation and date support for the control and bioremediation of endogenous pollution in lake.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
