Table 1.

Percentage survival (%) and leaf senescence score (LS) of rice seedlings after 5 (5DS), 10 (10DS) and 15 d (15DS) of submergence under natural day/night conditions

	Rice lines
	FR 13A	331	332	336	367	380	381	502	CT 6241	334	337	384	401	402	406
5DS
%	100 ± 0	97 ± 3	100 ± 0	100 ± 0	97 ± 3	97 ± 2	100 ± 0	96 ± 3	78 ± 6	97 ± 2	75 ± 3	75 ± 4	83 ± 8	84 ± 5	80 ± 8
LS	1	1	1	1	1	1	1	1	3	1	5	3	1	1	1
10DS
%	93 ± 4	97 ± 6	97 ± 2	100 ± 0	89 ± 5	94 ± 3	90 ± 3	99 ± 1	4 ± 3	7 ± 3	0 ± 0	4 ± 3	4 ± 2	2 ± 2	0 ± 0
LS	1	1	1	1	1	1	1	1	7	7	9	7	7	7	9
15DS
%	10 ± 4	42 ± 8	37 ± 9	78 ± 4	58 ± 8	6 ± 2	11 ± 4	86 ± 4	0 ± 0	0 ± 0	0 ± 0	0 ± 0	0 ± 0	0 ± 0	0 ± 0
LS	7	5	5	1	3	7	7	1	9	9	9	9	9	9	9

Values are means ± s.e.

All plants were submerged at the three‐leaf stage and measurements were made after 12 d of recovery from submergence in air.

Higher leaf senescence scores indicate greater leaf senescence or necrosis.