PHYTOREMEDIATION OF CADMIUM BY RICINUS COMMUNIS L. IN HYDROPHONIC CONDITION

Author (s) : Dr.K.YASMIN

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Abstract :
Ricinus communis potential for cadmium (Cd) phyto extraction was examined in a hydrophonic state. The investigated plants were cultivated for 28 days in 250 ml flasks of nutrient solution with escalating dosages of Cd (0, 5, 10, 15, 20 and 25 mg/L) in a greenhouse environment.In  this experiment, physiological characteristics of the plants were determined. With increasing doses of Cd, it was discovered that the amount of Cd in plant tissues was rising. At T5 (25 mg/L of Cd), the highest Cd uptake was observed. The order of Cd accumulation in the various plant parts was discovered to be: root > leaf > stem. T2 (10 mg/L of Cd) had the highest BAF value, and the BAF value for the entire plant ranged from 0.286 to 0.455. For shoot-leaves and root-shoot relationships, the translocation factor (TF) values varied from 0.626 to 0.837 and 0.645 to 0.857, respectively. All BAF and TF values were discovered to be below 1. When compared to the control, the Cd treatment dramatically decreased plant height, root length, and total dry biomass. The concentration of proline was likewise enhanced by Cd stress in the roots and leaves, with T3 (15 mg/L of Cd) having the highest proline level (81.3 g/g). Under Cd stress, the total phenolic content (TPC) similarly increased to its highest levels (55 and 59 mgGAE/g DW). For the root and leaves, TPC was discovered in T4 (20 mg/L Cd), respectively. While root proline was found to be higher than leaves, root TPC was found to be higher than leaves.

Keywords : Ricinus communis, Cadmium.

Conference Date : 17/09/2021

Pages : 63

Paper ID : IESMDT61