Fig. 3

The chlorophyll content of rice seedlings by pretreatment with an ethylene precursor under submergence conditions. The chlorophyll a, b and total content of 8-day-old TK9 rice seedlings treated under Nor, Sub, and Pre ACC + Sub for 2 days and then subjected to submergence for 4, 6, 8, and 10 days. The data represent the average values ± SD from four biologically independent experiments. The values with asterisk are significantly different at P < 0.05, according to Student’s t test