Mechanism of floral induction in vernalized plants:

Ø It is clear from the earlier discussions that plants with their specific genetic makeup respond to different treatments like cold or photoperiods and produce flowers.

Ø Most of the cold-requiring plants also require proper photoperiodic treatment. Gibberellins are known to overcome both cold treatment and photoperiodic treatment in long-day plants, but it does not affect short-day plants. Synthesis of some unknown substance called vernalin during the period of vernalization has been demonstrated by grafting experiments.

Ø Furthermore, for proper vernalization, plants require a sufficient amount of water, oxygen, and some vegetation growth.

Ø Though all the above-said factors are provided to the plant, flower-inducing substance won’t be synthesized until and unless it is treated with the proper cold conditions at the stage of its development. It is during the cold treatment, that the synthesis of the flowering-inducing factor is believed to be accelerated.