About Lesson
Vernalin:
Ø The presence of such a substance has been demonstrated by grafting a vernalized plant to another non-vernalized plant at normal temperatures.
Ø Some substance is synthesized and such substance is now called ‘Vernalin” and it is capable of diffusion. Attempts to isolate and identify the components of vernalin have failed. Whether the vernalin is the same as florigen or a precursor of florigen is not known.
