Bond and Q's successor thus end rows (5)
I believe the answer is:
tiers
'rows' is the definition.
(tier is a kind of row)
'bond and q's successor thus end' is the wordplay.
'bond' becomes 'tie' (both can mean a connection).
'and' says to put letters next to each other.
'q's successor' becomes 'r' (I can't justify this - if you can you should believe this answer much more).
'end' says to take the final letters.
The final letter of 'thus' is 's'.
'tie'+'r'+'s'='TIERS'
Can you help me to learn more?
(Other definitions for tiers that I've seen before include "Tries (anag.)" , "Layers or thicknesses" , "Row upon row" , "aprons for kids" , "Rows; ranks" .)