Vol. 2, Issue 10 (2015)
Rhizosphere properties of three wetland macrophytes under conditions of varying organic load in the microcosm
Author(s): Aparna Bhardwaj, CP Kaushik, Anubha Kaushik
Abstract: The rhizospheric properties of three wetland plants viz. Canna indica, Typha latifolia and Eichhornia crassipes were analyzed in relation to low and high strength post methanation distillery effluent (PMDE). The experiments were conducted in lab scale microcosms for 15 days in small pots having soil and gravel as substrate in order to mimic wetland conditions. Morphological and anatomical features of root system, root aerenchyma pattern, root oxidase activity were studied along with plant growth parameters like shoot length, total biomass and leaf chlorophyll content. Typha latifolia and Eichhornia crassipes showed relatively higher root oxidase activity in response to high strength wastewater also the aerenchyma was well developed in both the plants as compared to that of Canna indica. All the three plant species tolerated high organic load of the PMDE indicating their suitability for use in treatment wetlands.