Chief Minister K Palaniswami and his deputy O Panneerselvam, who are also AIADMK coordinators, unveiled the bronze statue of the late leader at the party headquarters.
They also launched the party's official Tamil daily 'Namadhu Puratchi Thalaivi Amma,' (Our Revolutionary Leader Amma) on the occasion.
'Dr Namadhu MGR,' which was founded by Ms Jayalalithaa and previously was the official Tamil daily of the AIADMK, is now aligned towards sidelined leader T T V Dhinakaran and V K Sasikala, who is in jail.
A festive mood was palpable at the party headquarters on the occasion of Ms Jayalalithaa's birth anniversary, the first such event after Mr Palaniswami and Mr Panneerselvam came together, easing out Ms Sasikala and her kin Mr Dhinakaran from the party last year.
As the statue was unveiled, firecrackers were burst and sweets distributed among party cadre who raised slogans hailing Jayalalithaa. Several events, including community feasts and distribution of aid to the needy, were held by party functionaries and cadre across the state.
Similar events were also held by rival leader Mr Dhinakaran.
At Ambasamudram in Tirunelveli district, gold rings were presented to babies born on Saturday at a government hospital.
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