Abstract:
Environmental pollution is increased due to industrialization and urbanization. Industrial wastes are plentiful withtoxic metals that are risky for plants as well as other creatures. One of the most harmful elements is chromium whichfrequently occurs in ultramafic and serpentine rocks as complexes with other heavy metals in crystals that result ininhibit growth, reduce chlorophyll synthesis and alter several metabolic processes in plants such as chlorosis. Ironsulphate could serve as good source of both iron and sulfur, hence helping plants to counter stress through theirameliorative effects. Supplemental calcium sulphate significantly improved growth and physiological variablesaffected by heavy metal stress. The Medicago sativa L. (alfalfa) has a lot of importance because of its role in increasingthe soil fertility by nitrogen fixation. The use of iron sulphate and iron sulphate calcium sulphate increased the abilityof the plant growth. The objective of the study is to analyze the effects on morpho-anatomical attributes of Medicagosativa L. against different concentrations of chromium chloride along with iron sulphate and calcium sulphate. Theplant was treated with three levels of heavy metal solution as 30µM/L, 60µM/L and 90 µM/L respectively for 8 weeks.In these treatments, plants were further divided into two groups in which first group of plants were treated with onlysole metal while the others were treated with different concentrations of Chromium chloride along with iron sulphateand calcium sulphate solutions. The results of these treatments showed that the increasing level of heavy metals affectsthe morphology of plants by decreasing shoot length, root length, number of leaves, number of branches, number ofnodules, leaf area, fresh weight and dry weight of plants and also developed anatomical changes by decreasing trendin xylem thickness, phloem thickness, leaf lamina thickness, cell area of stem and root stomatal area, stomatal densityand dermal cell area in leaves as compared to control group of plants. But the exogenous application of iron sulphateand calcium sulphate decreased the harmful effects of heavy metal and revealed the positive responses during thegrowth of plants.
Page(s):
159-159
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023