Abstract:
Present study was held to evaluate the effect of lead tolerant plant growth promoting rhizobacteria (LTPGPR) on growth, physiology, yield, and lead uptake in tomato in sand soil polluted with lead under jar conditions. Two pre-characterized lead tolerant rhizobacterial strains S18 (Bacillus megaterium), S11 (Bacillus safensis) and their combination was used to inoculate tomato growing in sandy soil contaminated with different levels (0, 400 and 800 mg kg-1) of lead by using lead acetate salt as a source of lead. Treatments were organized according to completely randomized design with factorial preparations. At harvesting, data regarding growth attributes (root and shoot length, fresh and dry weights of shoot and root, plant height, number of leaves), color of leaves, physiological elements (Chlorophyll ‘a’,‘b’ and carotenoids content), relative water content of fresh and dry leaves, lead content in roots and shoots of plant samples were recorded. Data were analysed by standard statistical procedures. Results showed that lead contamination reduced the plants growth, physiological attributes and yield at all levels of lead stress. But inoculation with lead tolerant plant growth promoting rhizobacteria in soil polluted with lead improved plant growth (plant height, shoot length, root length, number of leaves, leaf color, fresh and dry weight of leaves, fresh weight of root and shoot, dry weight of shoot and root), physiological attributes and yield of tomato as compared to plants grown in sandy soil without inoculation. Inoculation with PGPR also decreases the uptake of lead in roots and shoots as compared to plants in lead contamination withoutinoculation.
Page(s):
149-149
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023
Keywords:
heavy metal
,
Bacillus species
,
PGPRS
,
Solanum lycopersicum
,
lead tolerance