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Pakistan Journal of Biological Sciences
Year: 2001  |  Volume: 4  |  Issue: 2  |  Page No.: 121 - 123

Loss in Germinability of Heat-treated Wheat Seeds is Associated with Reductions in Electrical Conductance of Their Leachates

Mohammad Ashraf, Faiz-ul-Hassan Nasim and Mohammad Munir Hussain    

Abstract: Wheat seeds of two high vigour cultivars, Inqalab and Pasban, were heat-treated at 55±2 °C and 70±2 °C in presence (wet) or absence (dry) of water for 1 day. Germination tests exhibited reductions in percentage seed germination with increase in the pre-treated temperature and zero percent germination was exhibited in 55±2 °C (wet) treated seeds. `Pasban` seeds were more sensitive to heat-treatment than `Inqalab` seeds. Electrolytes leakage (μS/cm/seed) and rates of electrolytes leakage (μS/cm/seed/h) measured in the first 6 hours of imbibition reduced with increase in temperature treatment compared with that of controls. The correlation between loss in germinability and electrical conductance is discussed.

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