Figure 5

Performance of seedling under stress condition. (A) The germination rate of plants treated with 1 μM ABA, 3 μM ABA, 150 mM NaCl or 200 mM NaCl individually. (B) Performance of seedlings treated with drought. Effect of 20 days old plants growing in soil in SDs treated with drought (no water for 7days), photos at 3 days after rewatering, Bars = 1.0 cm. (C) Phenotypes of seedlings treated with 150mM NaCl. Germination of plants growing in MS medium with 150mM NaCl, photos at 7 days after germination; Growth of plants cultivated in MS medium with 150mM NaCl vertically, photos at 10 days after germination. Bars = 1.0 cm. (D) Effect of 20 days old plants growing in soil in LDs treated with 200mM NaCl every other day for 3 times, photos at 10 days after treated. Bars = 1.0 cm. (E) Performance of seedling under heat: a, b and c: effect of plants of 7 days old under 37°C for 5 days; d, e and f: effect of plants of 15 days old under 37°C for 8 days. Bars = 0.5 cm. (F) The relative level of MDA and SOD of plants under stress conditions. 20 days old plants growing in soil in SDs treated with 42°C for 36h, samples were prepared from rosette leaf after recovered for 1 day; 20 days old plants growing in soil in LDs, samples were prepared from rosette leaf after treated with drought (no water for 7 days); 20 days old plants growing in soil in LDs treated with 200mM NaCl every other day for 3 times, samples were prepared from rosette leaf after 7days. Data were from more than 8 individuals for each genotype ± SD. * t test, P < 0.05; ** t test, P < 0.01.