Table 4. Effect of temperature on character istics of chlorophyll fluorescence in Salvia miltiorrhiza Bunge

Temperature	Vj1)	Vi	Fv/Fm	ABS/RC	DIo/RC
20°C	0.447^a2)	0.737^a	0.813^a	2.049^c	0.383^b
25°C	0.401^b	0.703^b	0.815^a	2.177^b	0.402^b
30°C	0.375^c	0.693^b	0.808^b	2.317^a	0.445^a

Vj, relative variable fluorescence at 2 ms time; Vi, relative variable fluorescence at 30 ms time; Fv/Fm, maximum quantumn yield of PS II photochemistry in the dark adapted state; ABS/RC, absorption flux per reaction center; ETo/RC, electron flux per reaction center beyond Q_A -; DIo/RC, energy dissipation flux per reaction center.
Values represent the mean (n=3). Means with different letters are significantly different at p<0.05 probability level by Duncan’s multiple range test.