ABSTRACT

Iron is ubiquitously found everywhere in the earth surface. Environmental pollution due to uncontrolled discharge of iron from industrial and mining effluents has become a major threat. Odisha is a mine rich state of India and it is well known for iron production. In this study impacts of iron on germination and growth of Horse gram [Macrotyloma uniflorum (Lam.) Verdc.] in terms of physiological and biochemical parameters were undertaken. The seeds of horse gram were germinated in six different concentrations of iron having 0-100 mg/l of iron. It was observed that different indices like Seedling vigour indices, Metal tolerance indices were found to be reduced and the percentage of phyto-toxicity was found to be increased with increasing concentration of iron. The pot culture experiment revealed that different biochemical parameters like total chlorophyll content, total soluble protein content was decreased but free proline content was increased with increasing concentration of iron. It was also observed that seeds of Macrotyloma uniflorum showed better result in terms of growth and different biochemical parameters upto 40 ppm of iron in soil. This study indicates that iron up to 40mg/kg could enhance the plants growth in terms of both germination and developmental stage. So, it can be recommended that plants can be grown on the soil containing 40ppm or less iron content and beyond that limit, it will be considered as toxic. Key words: Biochemical parameters, growth, Horse gram, iron, stress
Publication date: 01/11/2024

https://ijbpas.com/pdf/2024/November/MS_IJBPAS_2024_8442.pdf

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https://doi.org/10.31032/IJBPAS/2024/13.11.8442