A hypothetical 'florigen' could be produced p | vedclass

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(B) Long-day plants $(LDP)$ require a critical day length to flower. The flowering response is mediated by the phytochrome system. In $LDP$,the active

Vedclass · Accepted Answer

Red light during the night

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(B) Long-day plants $(LDP)$ require a critical day length to flower. The flowering response is mediated by the phytochrome system. In $LDP$,the active form of phytochrome,$P_{fr}$,promotes flowering. During the night,$P_{fr}$ is converted back to $P_r$. By exposing the plant to red light during the dark period,$P_r$ is converted back to $P_{fr}$,thereby maintaining high levels of $P_{fr}$ and triggering the production of the hypothetical flowering hormone,'florigen',even if the natural day length is short.

$A$ hypothetical 'florigen' could be produced prematurely in a long-day plant by exposing it to:

Similar Questions

$A$ long-day plant will show flowering when the critical photoperiod duration is as follows:
Duration of light period $= A$
Duration of dark period $= B$

Differentiate between Short Day Plants $(SDP)$ and Long Day Plants $(LDP)$.

Assertion $(A)$: Vernalization is acceleration of subsequent flowering by low temperature treatment.
Reason $(R)$: Site of vernalization is apical meristem.

Which of the following is a short day plant?

Nicotiana tabacum,a short-day plant,when exposed to more than the critical period of light,fails to flower. Explain.

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