Sasikala led the celebrations at the party headquarters here where she garlanded a statue of Ramachandran, a former matinee idol who later went on to become the Chief Minister of Tamil Nadu, and also released a souvenir.
She gave away welfare assistance to many persons.
Sasikala, appointed AIADMK General Secretary following her predecessor the late Chief Minister J Jayalalithaa's demise last month, later visited Ramachandran's Ramavaram residence here, where she was received by the leader's adopted daughter Sudha Vijayakumar and her son.
Sasikala later visited a school for speech disabled and hearing impaired children run by MGR's family and gave away hearing aid to children.
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Later, she served food and also shared a meal with the children there.
Meanwhile, Panneerselvam paid floral tributes to a portrait of MGR at Guindy with his cabinet colleagues in tow.
At an official function, a postage stamp was also released to mark the birth centenary of MGR.
The Chief Minister and Sasikala had earlier urged Prime Minister Narendra Modi to release a special postage stamp and commemorative coin in honour of Ramachandran, who is also a Bharat Ratna recipient.
A charismatic superstar, MGR is a legendary name in Tamil cinema. He made a name in state politics after he broke away from the DMK following differences with its chief M Karunanidhi and founded AIADMK in 1972.
Known for his flamboyant acting and songs preaching values and virtues, Ramachandran ruled the state from 1977 till his death in 1987.
Meanwhile, a Puducherry report said Senior Congress
leader and PWD Minister A Namassivayam and Welfare Minister M Kandasamy paid floral tributes at the statue MGR on the occasion of his birth centenary.
Secretary of the Puducherry unit of the AIADMK P Purushothaman led a team of party cadres to garland the statue.
Chief Minister V Narayanasamy had earlier in his message recalled the dedicated services of MGR for the poor.