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Pakistan Journal of Biological Sciences
Year: 1998  |  Volume: 1  |  Issue: 4  |  Page No.: 287 - 290

Germination Patterns and Electrolytes Leakage During Imbibition of Intact and ‘Naked’ Seeds of Salvadora oleiodes

M. Ashraf and S. Nisar    

Abstract: Seeds of Salvadora oleiodes (locally called Jhal or Pelun) were tested for their germination performance and membrane leakage properties during early hours of imbibtion. The optimal germination temperature determined was 30°C wherein 85 percent germination was obtained within 5 days of imbibition. When seeds with testa (intact) or without testa (‘naked’) were immersed in water and electrical conductance (E.C.) measured, higher E.C. values were obtained in ‘naked’ seeds than the intact ones. Potassium ions in leachates of 1 h imbibed seeds were 14-18 ppm/seed in intact and 133 ppm/seed in ‘naked’ seeds. Inorganic phosphorus contents (Pi) were 61 ppm/‘naked’ seed which remained un-detectable in leachates of intact ones. Less tham 1 ppm/seed Na was detected in leachates of ‘naked’ seeds. Amino acids and carbohydrate contents (33 μmol/seed and 68 μg/seed, respectively) were among organic solutes effluxed during early minutes of imbibition.

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