Elucidating Strontium Response on Growth Dynamics and Biochemical Change in Phaseolus mungo L
2011
Meena, Desha | Singh, Hukum | Chaudhari, S.K.
Soil contagion through heavy metals is a pervasive incidence as an end result of human activities together with agricultural, nuclear explosions, industrial activities which have a strong influence on the environment and inhibit plant growth development and yield of various agricultural crops. A laboratory experiment was performed at Defence Research Laboratory, Defence Research and Development Organization Jodhpur, Rajasthan India to assess phytotoxic effects of strontium on growth performance, enzyme activity of peroxidase and acid phosphatase, proline, protein and strontium content in shoot and root of Phaseolus mungo seedlings. Pre water soaked seeds were treated with 0, 5, 10, 20 and 40 ppm of strontium chloride solution and germinated on glass plate at 25°C in seed germinator. The parameters associated with growth performance and biochemical changes were studied in 2 and 5 days old seedlings. Growth of shoot and root seedlings was gradually decreased with increasing strontium concentration. Peroxidase and acid phosphatase enzymes activity, proline and strontium content were increased whereas protein content decreased with increasing strontium concentration. All parameters highest recorded for 5 days old seedlings compare to 2 days old seedlings except protein content. Highest protein content in shoot and root was observed in 2 days old seedling rather than 5 days. The study concluded that Phaseolus is a hyper accumulator crop species and can be used to remediate soil contaminated by heavy metal ion and also suggested that peroxidase, acid phosphatase and Proline can act as a stress marker.
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