Can i gift to my father

According to section 52 (2) (vi) of income tax :

Where any sum of money, the aggregate value of which exceeds Rs.50,000, is received without consideration by individual/HUF, the whole of aggregate value is taxable as income from other sources.

Provided that this clause shall not apply to any sum of money received From any relative

in the definition of relative father also included

hence in you case u can gift any sum of money to your father and which will not attracted the tax implicability