Lettuce Seed Germination: Evidence for a Reversible Light-Induced Increase in Growth Potential and for Phytochrome Mediation of the Low Temperature Effect.

  title={Lettuce Seed Germination: Evidence for a Reversible Light-Induced Increase in Growth Potential and for Phytochrome Mediation of the Low Temperature Effect.},
  author={Joseph Scheibe and Anton Lang},
  journal={Plant physiology},
  volume={40 3},
Photoblastic germiinlationi in lettuce has been very extensively sttudiedl (7, 17). The process is phytochromiie-miiedliated, that is, brief irradiances with red lighlt (RZ) promote subsequent germiniation, and the red effect is repeatedly reversible by immlliediate reirradliation witlh far-redl light ( F). Some lots of freslylv harvested seed of the variety Grand( Rapids germinate little or Inot at all wihen imlHbibed in the (lark at 260. Dark germiniatioln is someiehat hig-her at lowver… 

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The role of phytochrome in an interaction with ethylene and carbon dioxide in overcoming lettuce seed thermodormancy.
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The growth physics and water relations of red-light-induced germination in lettuce seeds
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An enzyme to degrade lettuce endosperm cell walls. Appearance of a mannanase following phytochrome- and gibberellin-induced germination
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Action of Gibberellic Acid on Lettuce Seed Germination.
The following experiments are an attempt to provide answers to questions as to the mechanism of light-controlled germination of seeds which ordinarily require light.
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