Initially, the ABA was identified as - Vidyadip

Question

Initially, the $ABA$ was identified as

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Answer

d
During mid $1960$ s, three independent researches reported the purification and chemical characterisation of three different kind of inhibitors as inhibitor $B$, abscission II and dormin. Later, three were proved chemically identical. It was named Abscisic Acid ($ABA$)

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