Identify the three types of inhibitors purified and chemically characterized in mid-1960s.
i- Inhibitor A
ii- Inhibitor B
iii- Abscission I
iv- Abscission II
v- Dormin
During mid-1960s, three independent researchers reported the purification and chemical characterization of three different kinds of inhibitors: inhibitor-B, abscission II and dormin. Later all the three were proved to be chemically identical. It was named abscisic acid (ABA).