Which breaks dormancy of potato tuber : -

Which breaks dormancy of potato tuber : -
A Gibberellin
B IAA
C ABA
D Zeatin

Detailed Solution

Gibberellins overcome dormancy of seeds and buds by counteracting abscisic acid.
Treatment of potato tubers with gibberellic acid makes their buds (eyes) sprout early.
ABA induces dormancy; IAA and zeatin are not used for this purpose.
So gibberellin breaks the dormancy of potato tubers.

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