Martin:I also want to mention one Fact:
On the tree that are partially parthenocarpic,like Pastiliere,Melanzana,Celeste Burjasotte Grise(I herd reports),The Fruits that are polinated in Italy and saouthern France,are much larger tastyer,better flavored,than the unpolinated fruits on the same tree,in the same time.
Also the polinated fruits have an interior of different color,usually much darker,than unpolinated ones.