Tons in genera strangely producing citrus fruit (9)
I believe the answer is:
tangerine
'citrus fruit' is the definition.
(tangerine is a kind of citrus fruit)
'tons in genera strangely' is the wordplay.
'tons' becomes 't'.
'strangely' indicates an anagram.
'in'+'genera'='ingenera'
'ingenera' anagrammed gives 'angerine'.
't'+'angerine'='TANGERINE'
'producing' acts as a link.
(Other definitions for tangerine that I've seen before include "Kind of orange" , "fruit product" , "orange colour" , "Moroccan" , "Green tan I change into orange" .)