Fig. 6.

No significant difference is seen between adult hhp1-1 plants and adult WT or c-hhp1-1 plants in tolerance to salt or drought stress. For the salt or drought tolerance assay, 21-d-old adult soil-grown WT, hhp1-1, and c-hhp1-1 plants grown under long-day conditions were subjected to salt (B-D) or drought (E) by watering with water (A, control) or 50 mM (B), 100 mM (C), or 200 mM NaCl (D) or withholding water (E) for 14 d. The plants were then removed from the salt or drought stress and received water for 3 d, then the number of surviving plants was counted. The numbers 1, 2, and 3 represent WT, hhp1-1, and c-hhp1-1 plants, respectively. Photographs were taken on day 38 when the inflorescence was excised and were taken in top view. The photographs are representative of 12 independent pots, with the three types of plant (WT, hhp1-1, and c-hhp1-1) grown in the same pot to minimize experimental variations. The entire test was repeated three times, using 12 plants each time. (This figure is available in colour at JXB online.)