Fig. 4.

Relative transcript abundance of the ethylene biosynthesis genes PsACO1 (A and B), PsACO2 (C and D), and PsACO3 (E and F) in pollinated and non-pollinated pea fruits. Whole pericarps were assessed at –2 DAA, and pericarp tissues (ventral vascular suture, dorsal vascular suture, and wall) were assessed at 0–3 DAA. For non-pollinated fruits, flowers were emasculated at –2 DAA to prevent pollination. Data are means ±SE, n=3, with n=2 for a few samples where the tissues were limited due to small tissue size. Each sample is composed of a minimum of four pericarp tissues.