Figure 12.
Dynamics of ovary starch leading to embryo abortion at low ψw. A, Suc is delivered to the tissues below the ovary (large arrow) and either used in developing structures or stored as starch around the veins and in the ovary tissues around the nucellus (small arrows). B, With inhibited photosynthesis, Suc delivery is curtailed (▪ ▪ ▪), starch is mobilized (small arrows), and ovary development continues. C, When the starch is depleted, ovary development ceases irreversibly. The final kernel number is diminished accordingly.