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[lyok]

Hallo,
just a quick question: why do in vitro plants (or callus etc.) need light?

I suppose this is becuase there are some light sensitive reactions occuring in plants ? But wich reactions? Any examples?
(I know that photosynthesis is down, so thats not the reason..)

I never had a lot of basic plant science so I wonder what reactions need light?

[Simron]

Different type of plants needs different amount of light.Light is an important environmental factors. Generally, Red light shortens the time necessary for producing the plants. Blue & whit dark light were found to be promotive.

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