Yes, APOMICTIC is a Scrabble word!

Letter values in Scrabble US: A 1, P 3, O 1, M 3, I 1, C 3, T 1, I 1, C 3.

Is it a valid word?

APOMICTIC is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

of or relating to a plant that reproduces by apomixis
(of reproduction) not involving the fusion of male and female gametes in reproduction

Not playable in Scrabble US: APOMICTICAL, AGAMOGENETIC.