Abstract:
The proliferation in industrialization, population and agriculture all added to environmental pollution. The untreated industrial effluents pose a negative effect on plants and other living organisms. Among the heavy metals, lead (Pb) is the nonessential and most frequently occurring metal in agronomic soils that result in stunted plant growth, chlorosis in leaves and blacking of roots. Potassium plays an important role to help the plant to subsist with biotic and abiotic stress. Gypsum is a low-cost source of sulphur (S) and calcium (Ca), and it helps plants withstand biotic and abiotic stresses. Brassica nigra L. belongs to family Brassicaceae, has a great importance as oil seed crop and good source of fodder. The goal of the current study is to evaluate the effect of gypsum and potassium sulphate on the morpho-anatomical attributes of Brassica nigra L. under the metal stress i.e., lead chloride. The plants were treated with three different levels of lead chloride solution i.e., 30mg/L, 60mg/L and 90mg/L for 8 weeks. Further, the plants were divided into two groups, plants treated with sole metal and plants treated with metal along with potassium sulphate and gypsum. The findings indicated that the plant morphological attributes such as root and shoot length, number of leaves and fresh as well as dry weights decreased with increasing concentration of metal. The findings of anatomical studies indicate decreasing trend in root and stem diameter, xylem thickness, phloem thickness, stem and root cell area, stomatal density in leaves and dermal cell area in leaf and stem with rising concentration of metal in comparison to the control group plants. Application of potassium sulphate and gypsum decreased the hazardous effects posed by heavy metal and demonstrated positive growth in the presence of low metal concentrations, whereas at high concentrations of heavy metal both potassium sulphate and gypsum showed less or no positive effect. Our results showed that exogenous application of gypsum gives comparatively good results in ameliorating the metal stress and to improve morpho-anatomical parameters of Brassica nigra L. as compared to potassium sulphate.
Page(s):
158-158
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023
Keywords:
Lead toxicity
,
Calcium Sulphate
,
Potassium Sulphate
,
Brassica nigra L