Abstract:
Restoration of heavy metals contaminated soil is challenging due to the persistence and non-biodegradable nature of heavy metals. Due to the hetero genous nature of soil, one plant may be affective in the remediation of specific metal but may not efficiently remove other heavy metals. Therefore, the present study was conducted to evaluate the potential of ornamental plants for the uptake of lead (Pb), cadmium (Cd) and zinc (Zn). For this purpose, soil was spiked with Cd, Pb and Cd at150 mg kg-1, 1500 mg kg-1 and 1500 mg kg-1,respectively alone and in combinations. Seedlings of four ornamental plants(Marigold, Zinnia, Sunflower and Vinca) were transplanted in spiked and control soil (No heavy metal added). Plants were exposed for 30 days, kept in greenhouse, watered daily, and illuminated with natural light. Plant biomass was reduced in spiked soils as compared to control soil. Moreover, all plant species survived in soil spiked with single heavy metal. The plants showed lower biomass in soil spiked with Pb+Cd and Pb+Cd+Zn. The maximum toxicity was found in Pb+Cd treatment and Pb+Cd+Zn treatment as compared to the other treatments. Further, the maximum metal uptake was observed in Marigold and translocation factor was greater than 1. The Marigold plant is considered as multi-metal hyper accumulator plant.
Page(s):
92-92
DOI:
DOI not available
Published:
Journal: 1st International Conference on "Recent Advances in Green Biotechnology and Climate Resilience", September 15-16, 2025, Volume: 1, Issue: 1, Year: 2025
Keywords:
ornamental plants
,
Heavy metals
,
Metal accumulation
,
Growth response