. 2023 Oct 11;11:e15954. doi: 10.7717/peerj.15954

Table 2. Summary of analysis of variance for photosynthesis characteristics, chlorophyll fluorescence, chlorophyll, proline assay of Prunus sargentii at the two water levels (control, drought stress) and drought treatment times.

Parameters	Water level (W)		Treatment time (T)		W × T
	F-value	Significance	F-value	Significance	F-value	Significance
P_n max	344.0	^***	65.7	^***	57.3	^***
E	305.5	^***	51.7	^***	29.1	^***
g_s	963.6	^***	213.1	^***	83.7	^***
WUE	29.8	^***	8.1	^***	6.6	^***
F_v/F_m	14.8	^**	14.2	^**	4.8	^**
ΦPSII	635.7	^***	87.1	^***	92.8	^***
R_fd	780.9	^***	51.6	^***	88.4	^***
NPQ	258.8	^***	14.3	^***	23.2	^***
PI_ABS	202.9	^***	27.0	^***	13.4	^***
Chl. a	12.2	^**	6.2	^*	2.4	^*
Chl. b	10.8	^**	12.1	^*	2.6	^*
Total Chl.	13.4	^**	7.4	^*	1.8	^*
Chl. a/b	6.7	^*	13.9	^*	2.9	^*
Proline	136.7	^***	132.1	^***	97.9	^***

Notes.

RMANOVA was used estimate the effect of treatment: *, **, and *** indicate significance at p < 0.05, p < 0.01, and p < 0.001, respectively.