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Vernalisation – Define....

Vernalisation – Define.

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Many species of biennials and perennials are induced to flower by low temperature exposure `(0^@ C " to " 5^@C)` . This process is called Vernalization.
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How vernalisation is carried out?

Assertion : Vernalisation is the promotion of flowering by a period of low temperature. Reason : It prevents precocious reproductive development late in the growing season.

Define Vernalisation.