3.1. Phenotypic Variations
The well-watered plants showed normal growth of the stems. Under mild drought stress conditions (after 20 days of the treatment), the plants showed a slight reduc- tion in the growth rate of the stems, and the growth rate reduction became more dramatic under severe stress (af- ter 60 days of the treatment). IR52561 showed the high- est plant height with an average of 93 cm followed by IR58821 (88 cm), BT (72 cm) and IR62266 (72 cm) as presented in Figure 1(b). The plants subjected to drought stress showed a decrease in tillering rates compared with the well-watered plants. Under mild drought stress, the plants showed a slight reduction in tillering rates, and the rates became more dramatic when the plants were subject to severe drought stress. IR62266 showed the highest number of tillers per plant, at 8, and CT9993 displayed the lowest number of tillers per plant at 3. The other cul- tivars showed the number of tillers per plant as 5 as shown in Figure 1(c).
Leaf rolling, which is a visible sign of drought stress,
3.1. Phenotypic VariationsThe well-watered plants showed normal growth of the stems. Under mild drought stress conditions (after 20 days of the treatment), the plants showed a slight reduc- tion in the growth rate of the stems, and the growth rate reduction became more dramatic under severe stress (af- ter 60 days of the treatment). IR52561 showed the high- est plant height with an average of 93 cm followed by IR58821 (88 cm), BT (72 cm) and IR62266 (72 cm) as presented in Figure 1(b). The plants subjected to drought stress showed a decrease in tillering rates compared with the well-watered plants. Under mild drought stress, the plants showed a slight reduction in tillering rates, and the rates became more dramatic when the plants were subject to severe drought stress. IR62266 showed the highest number of tillers per plant, at 8, and CT9993 displayed the lowest number of tillers per plant at 3. The other cul- tivars showed the number of tillers per plant as 5 as shown in Figure 1(c).Leaf rolling, which is a visible sign of drought stress,
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