Table 1.

Summary of the analysis of variance between experiment (genotypes) and heat stress treatments on the physiological and biochemical variables of rice plants.

Source of variation	df	gs	RWC	CC	Fv/Fm	F0	Fm	Fv	Fv/F0	Fm/F0	PCT (°C)	CSI	RTI	Chl a	Chl b	Chl total	Cx+c	MDA	Proline
Experiment (E)	1	<0.001	0.0183	<0.001	<0.001	<0.001	0.728	<0.001	<0.001	<0.001	<0.05	0.767	<0.001	<0.001	0.107	<0.001	<0.001	0.484	<0.001
Treatment (T)	5	<0.001	<0.001	<0.001	<0.001	0.0542	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
E x T	5	<0.001	<0.05	<0.001	<0.001	0.361	0.280	<0.05	0.296	0.312	<0.05	0.679	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
C.V. (%)		7.58	3.05	5.16	3.93	15.26	5.31	2.27	9.64	8.20	1.61	12.12	8.81	6.92	8.67	16.50	8.97	54.15	32.77

g_s, stomatal conductance; RWC, relative water content; CC, chlorophyll content; F_v/F_m, maximum quantum efficiency of PSII; initial fluorescence (F0), maximum fluorescence (Fm), variable fluorescence (Fv), maximum efficiency of PSII (Fv/Fm), maximum quantum yield of PSII photochemistry (Fv/F0), and the Fm/F0 ratio, PCT, plant canopy temperature (°C), decrease in the maximum quantum efficiency of PSII; CSI, crop stress index; RTI, relative tolerance index; Chl a, chlorophyll a; Chl b, chlorophyll b; Chl total, total chlorophyll; Cx+c, carotenoids; MDA, Malondialdehyde. C.V., coefficient of variation.