Produce objective to be held by new genre (8)
I believe the answer is:
engender
'produce' is the definition.
(thesaurus)
'objective to be held by new genre' is the wordplay.
'objective' becomes 'end' (I've seen this before).
'to be held by' means one lot of letters goes inside another.
'new' indicates anagramming the letters.
'genre' is an anagram of 'enger'.
'end' put inside 'enger' is 'ENGENDER'.
(Other definitions for engender that I've seen before include "Give rise to, cause" , "Produce or cause, emotions say" , "Father" , "Give rise to (something)" , "Bring forth" .)