It is known that some varieties of wheat

It is known that some varieties of wheat are sown in autumn but are harvested around next mid summer.
(i) What could be the probable reason for this?
(ii) What term is used for this promotion of flowering under low temperature.
(iii) Which plant hormone can replace cold treatment.

(i) A winter season comes before flowering which is required for initiation of flowering in
some plants.
(ii) Vernalisation.
(iii) gibberellic acid treatment can replace cold treatment and can induce flowering early
by reducing vegetative growth period in many long-day plants.