Mild water stress-induced priming enhance tolerance to Rosellinia necatrix in susceptible avocado rootstocks

BMC Plant Biology

Table 1 Maximal photochemical efficiency of PSII (F_v/F_m), relative quantum yield of PSII photochemistry (ϕPSII), maximum photochemical efficiency of the open reaction centres of PSII (F_v’/F_m′), fraction of PSII centres in open state (qL), non-photochemical fluorescence quenching (NPQ) and coefficient of non-photochemical fluorescence quenching (qN) in control non-stressed plants, water stressed plants (mild-WS and severe-WS) and drought-primed plants (recovery mild-WS and severe-WS)

	Control			Mild-WS			Severe-WS			Recovery Mild-WS			Recovery Severe-WS
F _v /F _m	0.821	±	0.00	0.820	±	0.00	0.817	±	0.00	0.825	±	0.00	0.825	±	0.00
ϕ PSII	0.566	±	0.01^a	0.556	±	0.01^a	0.459	±	0.02^b	0.562	±	0.01^a	0.547	±	0.01^a
F _v ’/F _m ′	0.696	±	0.01^a	0.661	±	0.01^b	0.597	±	0.01^c	0.703	±	0.01^a	0.698	±	0.01^a
qL	0.587	±	0.03^ab	0.649	±	0.03^a	0.584	±	0.03^ab	0.550	±	0.02^b	0.533	±	0.03^b
NPQ	0.510	±	0.03^c	0.785	±	0.05^b	1.224	±	0.09^a	0.581	±	0.05^c	0.599	±	0.04^c
qN	0.413	±	0.02^c	0.534	±	0.02^b	0.655	±	0.02^a	0.439	±	0.02^c	0.455	±	0.02^c

Each value is the mean ± SE (controls n = 36, treatments n = 38). Different letters indicate significant differences among treatments within rows (P < 0.05)

ISSN: 1471-2229