The experiments, although rather limited on this point, show that the percentage of setting with chemical treatment is probably as great as with pollination. This refers only to the tomato. On the other hand, the parthenocarpic fruits are definitely smaller than the seeded fruits. 2. The early rate of growth may perhaps be a little greater in the ovaries treated with chemicals than in those pollinated, but this early rate decreases after a while, perhaps due to a lowering of the auxin concentration in them.
No takes yet. Share an insight, caveat, or question.
Felix G. Gustafson (1940) studied this question.