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Articles by Riyadh A. Basahi
Total Records ( 2 ) for Riyadh A. Basahi
  Riyadh A. Basahi , Mohammed A. Basahi and Fahad Alzuaibr
  The aim of the present study was to assess the genetic diversity of different Suaeda populations collected from Saudi Arabia using Inter Simple Sequence Repeat (ISSR). Seventeen ISSR primers yielded a reproducible banding pattern, the number of polymorphic bands per primer varied between 5 and 14 with a mean of 8 major bands per primer. UPGMA cluster analysis revealed three distinct clusters; The first cluster comprised Suaeda maritime populations, the second cluster comprised Suaeda vermiculata populations and the third cluster comprised Suaeda aegyptiaca populations. The present findings showed clear differences between plant species but no significant differences were observed among geographical distribution.
  Riyadh A. Basahi
  Lead is a toxic heavy metal found in the environment and affects all organisms. The aim of this study was to investigate the responses of Withania somnifera to lead (Pb) stress. Increasing lead concentration caused a decrease in germination percentage and germination index significantly 20 and 40 mM Pb (NO3)2 resulted in a huge reduction in germination percentage (21 and 9%, respectively). The mean germination time was only affected under 20 mM Pb (NO3)2. lead significantly reduced roots and shoots length compared to the control, the inhibition effect of lead was increased with the increasing concentration. Seedlings grown under high levels of lead (40 mM) showed the shortest root and shoot lengths (0.7 and 1.0 cm, respectively). An increase in proline content and lipid peroxidation was observed in W. somnifera seedlings under Pb treatment. lead concentration in plant tissues increased with the increase in lead concentration in the growing medium. In contrast to Pb concentrations in plant tissues, P and K concentrations decreased by all lead dozes.
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