Effect of Light Quality on Stomatal Opening in Leaves of Xanthium strumarium L.

  title={Effect of Light Quality on Stomatal Opening in Leaves of Xanthium strumarium L.},
  author={Thomas David Sharkey and Klaus Raschke},
  journal={Plant physiology},
  volume={68 5},
Flux response curves were determined at 16 wavelengths of light for the conductance for water vapor of the lower epidermis of detached leaves of Xanthium strumarium L. An action spectrum of stomatal opening resulted in which blue light (wavelengths between 430 and 460 nanometers) was nearly ten times more effective than red light (wavelengths between 630 and 680 nanometers) in producing a conductance of 15 centimoles per square meter per second. Stomata responded only slightly to green light… 

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