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Citation:

Effects of Pb2+, Cd2+ on Germination and Seedling Early Growth of Moso Bamboo (Phyllostachys edulis)Seed

  • Received Date: 2012-03-13
  • Taking Phyllostachys edulis seeds as test material, the effects of Pb2+ and Cd2+ on seed germination and seedling early growth were studied. The results indicated that the germination rate increased at first and decreased subsequently with the increasing of Pb2+ and Cd2+ concentrations, and these concentrations negatively affected the germination index and vigor index. Meanwhile, there had an inhibitory action between Pb2+, Cd2+ and roots growth, stems growth and biomass accumulation, and this action was enhanced by the increasing of concentration in solution, especially for seedling roots, the inhibitory ratio could up to 96.20% and 94.00% at most, respectively. Although the increase of Pb2+ and Cd2+ concentrations in solution significantly increased both on the aboveground part and underground part, the accumulation amount underground were much higher than the former. The maximum differences between the aboveground and underground could be up to 27.21 times (for Pb2+) and 6.25 times (for Cd2+) at the same concentrations.
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Effects of Pb2+, Cd2+ on Germination and Seedling Early Growth of Moso Bamboo (Phyllostachys edulis)Seed

  • 1. International Center for Bamboo and Rattan, Key Laboratory of Science and Technology of Bamboo and Rattan, State Forestry Administration, Beijing 100102, China

Abstract: Taking Phyllostachys edulis seeds as test material, the effects of Pb2+ and Cd2+ on seed germination and seedling early growth were studied. The results indicated that the germination rate increased at first and decreased subsequently with the increasing of Pb2+ and Cd2+ concentrations, and these concentrations negatively affected the germination index and vigor index. Meanwhile, there had an inhibitory action between Pb2+, Cd2+ and roots growth, stems growth and biomass accumulation, and this action was enhanced by the increasing of concentration in solution, especially for seedling roots, the inhibitory ratio could up to 96.20% and 94.00% at most, respectively. Although the increase of Pb2+ and Cd2+ concentrations in solution significantly increased both on the aboveground part and underground part, the accumulation amount underground were much higher than the former. The maximum differences between the aboveground and underground could be up to 27.21 times (for Pb2+) and 6.25 times (for Cd2+) at the same concentrations.

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