Effect of osmopriming and thermopriming on amelioration of mercuric chloride stress tolerance in mungbean ( Vigna radiat
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IGINAL ARTICLE
Effect of osmopriming and thermopriming on amelioration of mercuric chloride stress tolerance in mungbean (Vigna radiata L.) Ijaz Ahmad1 • Sami Ullah1
•
Muhammad Nafees1
Received: 14 October 2019 / Accepted: 4 August 2020 / Published online: 1 September 2020 Ó Indian Society for Plant Physiology 2020
Abstract Present work is based on presumptions that soak through of Vigna radiata seeds in osmotin like Polyethylene glycol (osmopriming) and low temperature treatment (thermopriming) has revealed to be a fundamental, impregnable and inexpensive technique for capability of seeds to increase seedling development and crop production through induced mercuric chloride stress of 5 ppm and 10 ppm recommended to persuade resistivity in test specie. Seeds of Vigna radiata variety (Ramzan) collected from National Institute of Food and Agriculture Islamabad were sown in earthen pots having 18 cm lower and upper inside diameter, height and thickness of 20 cm and 2 cm respectively occupied with air dried soil and silt 2.5 kg of (2:1) in triplicates in the greenhouse, Department of Botany, University of Peshawar. The result concluded that thermoprimed seeds with 4 °C has significant effects on most of the physiological attributes including chlorophyll ‘a’, ‘b’, carotinoids, protein and proline content in the treatments including T7 (4 °C), T8 (4 °C ? 5 ppm HgCl2), T9 (4 °C ? 10 ppm HgCl2) followed by osmopriming with PEG in the treatments e.g. T4 (PEG), T5 (PEG ? 5 ppm HgCl2), T6 (PEG ? 10 ppm HgCl2). While in case of POD and SOD content in T2 (5 ppm HgCl2) and T3 (10 ppm HgCl2) the non significant differences with T9 (4 °C ? 10 ppm HgCl2) at P B 0.05 indicating the enhanced level of tolerance in Vigna radiata after osmo and thermopriming. The study revealed the degree of resistivity to different levels of induced mercuric chloride stress signifying successful demonstration of priming & Sami Ullah [email protected] 1
Department of Botany, University of Peshawar, Peshawar 25120, Pakistan
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method will support agricultural manufacturing to advance seed quality and germination rate beside with deactivating osmotic modification by improving POD and SOD content. Keywords Osmopriming Thermopriming Vigna radiata Mercuric chloride stress Proline
Introduction Heavy metals in a general is joint term, which relates to a set of metals and metalloid with density greater 4 g/cm3 or higher than water (Alexander et al. 2006). These are major ecological pollutants and their harmfulness is a delinquent of growing significance for the ecological, environmental, nutritional and evolutionary causes. The term was first referred to any metal element that has a comparatively greater density and is toxic in low concentration. Heavy metals like Cu, Fe, Zn are vital for plants and animals (An et al. 2004). The availability of such as Cu, Mn, Mo, Ni, Zn, Fe, Co in a medium differs are essential micronutrients which are heavy metals (Auda and Ali 2019). Due to miscellaneous human actions such as smelting, mining, metal pollut
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