Computer programme getting ordered regularly - it should bear fruit (5,4)
I believe the answer is:
apple tree
'it should bear fruit' is the definition.
(fruit-bearing tree)
'computer programme getting ordered regularly' is the wordplay.
'computer programme' becomes 'applet' (type of application).
'getting' says to put letters next to each other.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
The alternate letters of 'ordered' are 'ree'.
'applet'+'ree'='APPLE-TREE'
(Other definitions for apple tree that I've seen before include "Source of the growth that inspired Newton?" , "where Jonathan hangs out" , "source of fruit" , "fruit producer" , "Plant bearing pippins" .)