Article Figures & Data
Tables
- Table 1. Estimates for numbers of days for wound responses of peach bark to occur following hypothetical injuries made in March, April, May, and June in Vineland, Ontario.z
Injury date Number of days Lignin formation Suberin formation March 15 49 62 March 31 36 49 April 15 27 39 April 30 22 32 May 1 5 18 27 May 31 15 23 June 15 13 21 ↵z Based on averaged annual degree-day accumulations (base = O C) in Vineland Station, Ontario, from 1935-1985. Estimated accumulated degree-days required for complete lignification and complete suberization are 256 and 411, respectively.
- Table 2. Lignin-thioglycolic acid (LTGA) extracted from bark of peach pruning wounds 14 days after treatment with various substances.
Treatment LTGA (mg/g)y LTGA (Percent of control) Fungal wall extract (FWE) 31.0 az + 81.3 Cellobiose (0.3 M) 29.2 a + 70.8 Plant wall extract (PWE) + FWE 23.2 ab + 35.6 Ca2+ (15 M) 22.8 ab + 33:4 Glutathione (3.25 mM) 20.6 ab + 20.7 PWE 20.3 ab + 18.7 Chitosan + Ca2+ (1 5 M) 20.3 ab + 18.6 Ca2+ (150 M) 18.8 ab + 9.7 Control (wrapped) 17.1 bc 0.0 Ethrel (7.0 mM) 15.1 bcd - 11.8 Chitosan (20 g/ml) 15.1 bcd - 11.8 GA3 + IAA (100 M + 100 M) 14.9 bcd - 12.5 Abscissic acid (100 M) 14.8 bcd - 13.3 Lac Balsam 11.0 cd - 35.7 White latex paint 8.6 d - 49.6 Control (nonwrapped) 3.2 d - 81.2 ↵y Each value is the mean of nine observations except for control (treated with water and wrapped with parafilm (n = 48) and control (nonwrapped, exposed to the environment) (n = 15).
↵z Letters denote significant differences determined with single degree-of-freedom orthogonal comparisons (P < 0.05).
- Table 3. Suberin autofluorescence (mV) from bark of peach pruning wounds 14 days after treatment with various substances.
Treatment Suberin autofluorescencey Percent of control Control (nonwrapped) 7 A az + 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 - Table 4. Percent infection and canker length 7 days postinoculation from twigs pre-treated with various substancesy
Treatment group Canker length (mm) Percent infection Control 23.4 az 66.7 b BAj + IAA 16.4 b 82.5 a LPWE 12.9 be 48.5 c LCWE 11.2 cd 74.7 ab Cellobiose 10.8 cd 47.4 c Calcium 6.6 d 21.0 d ↵y Values in both columns are the means of 50 observations except for control (n = 10) and GA3 + IAA (n = 40). LPWE and LOWE are cell wall extracts from Leucostoma persoonii and L. cincta, respectively.
↵z Letters denote significant differences determined with Duncan’s multiple range test (P < 0.05).
In this issue
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- Article
- Abstract
- What Happens in Bark After Wounding?
- Is Wound Response Related to Disease Resistance?
- How Does Environment Influence Wound Response?
- How Do Host Genetics Influence Wound Response?
- Genetic Variation Within Peach
- Can Wound Response Be Stimulated by Chemical Applications?
- Summary
- Footnotes
- Literature Cited
- Figures & Data
- Info & Metrics
- References
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