Lynn,
I do see some interesting segregations in the heuff seedlings. If 'Henri Correvon' is in the pedigree I get some huge and very vigorous greens but also a few reds that are huge and vigorous too. In these crosses I'm also getting some very small reds and some very tiny greens. These generally have the form of 'Giuseppi Spiny', which is the red parent in the hybrid used in the cross. The genetics of this seems to be simple in that red is dominant to green and you get 3 reds" 1 green in the F2, just like Mendel said they should! Size seems to be controlled by more factrors or at least not a simple Mendelian ratio.
Kevin