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  • It is known that some varieties of wheat are sown in autumn but are harvested around next mid-summer.(a) What could be the probable reason for this?

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

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Ans.

(a) These plants usually germinate and grow as seedlings throughout winter. They only resume growth when it is summer and is finally harvested around the upcoming midsummer. This is because these plants require low temperatures to bear flowers and
fruits and are able to finish their vegetative phase of growth over the period of winter and summer.

(b) This process mentioned here is called vernalisation.

(c) Gibberellin hormone can replace cold treatment effectively.

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