How do you say i love my mother in spanish?

quiero / amo a mis papás.

quiero / amo a mi mamá y a mi papá

PAPITOS, PAPIS or MAMITA, MAMI and PAPITO, PAPI, if it were mummy and daddy.

"Pa" and "ma", are a bit "tacky", and actually, the terms mum and dad haven't got such register.