Assertion : Vernalization is acceleration of subsquent flowering by low temperature treatment. Reason : Site of vernalization is apical meristem.

Step-by-step solution

Term vernalization was first given by T.D. Lysenko (1928). In colder countries, there are cereals of 2 physiological types, i.e., winter cereals and spring cereals. Winter cereals are sown in winter and flower in following summer whereas spring cereals are sown in spring and flower in summer. If winter cereal is sown in spring, it shows vegetative growth but does not flower unless it receives low temperature of winter. But winter cereal can be converted into spring cereal by providing artificial low temperature tre