Table 3. Suberin autofluorescence (mV) from bark of peach pruning wounds 14 days after treatment with various substances.

Treatment	Suberin autofluorescence^{^y}	Percent of control
Control (nonwrapped)	7 A a^{^z}	+ 33.4
Chitosan + Ca²⁺ (1 5 M)	7.4 a	+ 33.1
Fungal wall extract (FWE)	7.3 a	+ 32.2
Ethrel (7.0 mM)	6.9 a	+ 25.0
Abscissic acid (100 M)	6.8 ab	+ 23.6
Glutathione (3.25 mM)	5.8 abc	+ 4.3
Plant wall extract (PWE)	5.6 abc	+ 1.0
Control (wrapped)	5.5 abc	0.0
Chitosan (20 g/ml)	5.3 abc	- 3.8
Cellobiose (0.3 M)	5.0 abc	- 9.8
GA" + IAA (100 M + 100 M)	4.2 bed	- 24.4
Ca²⁺ (150 M)	4.2 bed	- 24.9
White latex paint	4.0 cd	- 26.8
PWE + FWE	3.9 cd	- 29.6
Ca²⁺(15 M)	3.7 cd	- 33.7
Lac balsam	2.0 d	- 64.2

↵y Each value is the mean of six observations except for control (treated with water and wrapped with parafilm) (n = 38) and control (nonwrapped, exposed to the environment (n = 37).
↵z Letter denote significant difference determined with single degree-of-freedom orthogonal comparison (P < 0.05).