Discussion
The ideal temperature for potato tuberization is
Answer: B
The ideal temperature for tuberisation is 18-20°C.
Potato tubers form best when night temperatures are cool, around 18 to 20 °C, together with short days. Under these conditions the plant produces less gibberellin and more of the tuber-inducing signal, so assimilates move to the stolon tips and tubers swell. Above about 29 to 30 °C tuberisation is largely inhibited and growth goes into the haulm.
10-12 °C is too cool and slows growth. 24-26 °C and 24-28 °C favour vegetative growth over tuber formation, which is why potato is a winter crop in the Indian plains.
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