Fruit variety after the beginning of October (6)
I believe the answer is:
orange
'fruit' is the definition.
(orange is a kind of fruit)
'variety after the beginning of october' is the wordplay.
'variety' becomes 'range' (I've seen this before).
'after' says to put letters next to each other.
'the beginning of' says to take the initial letters.
The initial letter of 'october' is 'o'.
'range' put after 'o' is 'ORANGE'.
(Other definitions for orange that I've seen before include "Citrus fruit; colour" , "divided internally, naturally" , "Name of reigning house of the Netherlands" , "Colour between red and yellow" , "shade" .)