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Light Green Top Leaves
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Light Green Top Leaves
The top leaves of plants are a lighter green than the bottom half. The plants seem healthy besides this issue. What could be the cause of the top leaves being a light green? Thanks for the help!
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3 Replies
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Light intensity stress.
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Thank you very much! I really appreciate the help here.
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Intensity stress tends to evenly fade the upper leaves light green because of chlorophyll production being inhibited. Chloroplasts (that collect the photons) are arranged in the cell towards the light (top of the cell), but if light get’s too intense, the chloroplasts will move away from the light to the bottom of the cell and stop producing chlorophyll. Chloroplasts move toward less intense light to increase photosynthetic efficiency and move away from intense light to protect themselves from damage and death.
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