Fig. 10.

Effects of hydrotropic response and drought stress on the development of root system of wild-type (‘Columbia’), miz1-1 and MIZ1OE plants. Fourteen-day-old plants were transplanted into moistened soil, and the chambers were half-covered (Hydrostimulated) as shown in Fig. 1. They were kept without further water supply for 10 d. The percentage of plants that grew roots into each zone of soil medium was calculated and represented by grey scales according to the classification indicated in the bottom bar. The arrow (g) indicates the direction of gravitational force.