Shehechiyanu on produce created with a transgression

Hi,

There is debate as to whether one recites Shehechiyanu for fruit which is the product of a prohibited interspecies graft.

As a matter of practice, Rav Moshe Feinstein wrote that one should not recite the blessing for such a graft, since Gd indicated His displeasure with this practice when He prohibited Jews from doing it.

(R' Moshe Feinstein, Igrot Moshe Orach Chaim 2:58)

Have a great day,
Mordechai