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Citation:

The Effects of Mo and Mn on Some Physiological Characteristics of Soybean

  • Received Date: 2001-09-10
  • The effects of manganese and/or molybdenum on five indexes of physiology and biochemistry (contents of chlorophyll, net photosynthesis, dark respiration, activity of nitrate reductase and contents of soluble sugars) of Heptacodium miconioides leaves were studied. The results showed that manganese and/or molybdenum have great influence on them. Five indexes are the lowest under the deficiency of manganese and molybdenum and increase along with increase of densities of manganese or molybdenum. When the density of manganese is 0.05 mg·L-1 or molybdenum is 0.5 mg·L-1, contents of chlorophyll, net photosynthesis and dark respiration of Heptacodium miconioides leaves are the greatest respectively in the treatment of manganese or molybdenum. When the density of manganese or molybdenum is 5 mg·L-1, content of soluble sugars of Heptacodium miconioides leaves is the greatest respectively in the treatment of manganese or molybdenum. When the density of manganese is 0.05 mg·L-1 or molybdenum is 5 mg·L-1, the activity of nitrate reductase of Heptacodium miconioides leaves is the greatest respectively in the treatment of manganese or molybdenum. If the density of manganese or molybdenum is higher than the best suitable one (each index is the greatest in that), each index begins to descend. The patience of Heptacodium miconioides with high molybdenum is greater than that with high manganese. The interrelation between molybdenum and manganese is complicated. When molybdenum and manganese are low (0.5 mg·L-1), they are cooperative each other and when they are high(0.5 mg·L-1), they are incoordinate each other.
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The Effects of Mo and Mn on Some Physiological Characteristics of Soybean

  • 1. College of Life and Environment, Zhejiang Normal University, Jinhua 321004, Zhejiang, China

Abstract: The effects of manganese and/or molybdenum on five indexes of physiology and biochemistry (contents of chlorophyll, net photosynthesis, dark respiration, activity of nitrate reductase and contents of soluble sugars) of Heptacodium miconioides leaves were studied. The results showed that manganese and/or molybdenum have great influence on them. Five indexes are the lowest under the deficiency of manganese and molybdenum and increase along with increase of densities of manganese or molybdenum. When the density of manganese is 0.05 mg·L-1 or molybdenum is 0.5 mg·L-1, contents of chlorophyll, net photosynthesis and dark respiration of Heptacodium miconioides leaves are the greatest respectively in the treatment of manganese or molybdenum. When the density of manganese or molybdenum is 5 mg·L-1, content of soluble sugars of Heptacodium miconioides leaves is the greatest respectively in the treatment of manganese or molybdenum. When the density of manganese is 0.05 mg·L-1 or molybdenum is 5 mg·L-1, the activity of nitrate reductase of Heptacodium miconioides leaves is the greatest respectively in the treatment of manganese or molybdenum. If the density of manganese or molybdenum is higher than the best suitable one (each index is the greatest in that), each index begins to descend. The patience of Heptacodium miconioides with high molybdenum is greater than that with high manganese. The interrelation between molybdenum and manganese is complicated. When molybdenum and manganese are low (0.5 mg·L-1), they are cooperative each other and when they are high(0.5 mg·L-1), they are incoordinate each other.

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