Abstract

In the present study, concentration effects of different heavy metals (Pb and Mg) in Rosa indica are observed to detect the changes in growth response due to effect of metal’s toxicity. Both metals have different tolerance index. Lead is toxic metal and has small tolerance index, whereas Mg is a macronutrient having a high tolerance index which can move in a large scale to different parts of the plants. The least and highest accumulation values of Pb and Mg were observed as 0.608-25.897 mg/L and 20948-52291 mg/L, respectively. The toxicity order in rose plant is Pb>Mg. The bio concentration and translocation factor values of Pb and Mg were 0.97, 0.77, 0.93 and 0.9 respectively. In lead polluted soil, plants height shown is declined due to the concentration of lead (66.38 cm-56.48 cm) whereas plant height increased because of massive concentrations of Mg (63.93 cm-75.03 cm). Results `revealed that accumulation of both metals were excessive in the roots and least in the stem and leaves. It is concluded that rose plant is a good accumulator of lead and magnesium.

Highlights

  • Pollution of heavy metals in soil is constantly increasing which is causing the soil tarnishing

  • Concentration effects of different heavy metals (Pb and Mg) in Rosa indica are observed to detect the changes in growth response due to effect of metal’s toxicity

  • Metals are being inducted in soil by different sources from many years which causes negative impact on micro flora, food chain, quality of drinking water, plant growth, human health and dwindle of crop production [3]

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Summary

Introduction

Pollution of heavy metals in soil is constantly increasing which is causing the soil tarnishing. Some of them are essential for the growth of plants [2] yet heavy metals are phototoxic substances and accumulating major environmental pollutants. Second is the metal accession mechanism in which plants exhibit massive potential for uptake of metals by roots and transport them towards the stem Selected soil was contaminated due to accumulation of heavy metals (Pb and Mg) which have toxic effects on plant growth, as well as animals and food chain. Result and discussion: Effect of Lead: The rose plant has shown variations toward the different concentrations of heavy metals (Pb and Mg). Absorption of lead was estimated in roots, stem and leaves of rose plant and obtained results were statistically analyzed (T test and Q test).

Lead Magnesium
Plant parts
Findings
Conclusion
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