Table 2. Effect of exposure to Ceratocystis fimbriata volatiles on the viability, mycelial growth, conidial production and spore germination of various plant pathogens.
| Species | Viability x | Inhibition of mycelial growth (%) y | Conidial production (conidia/mL) | Inhibited percent (%) z | |
|---|---|---|---|---|---|
| CK | Treated | ||||
| Botrytis cinerea | + | 73±2 | 4×108 | 0 | 80±3 |
| Monilinia fructicola | + | 65±1 | 5×106 | 0 | 73±5 |
| Fusarium verticillioides | + | 49±2 | 3×107 | 0 | 77±4 |
| Fusarium oxysporum | + | 50±2 | 3×107 | 0 | 72±4 |
| Valsa mali | + | 54±2 | NA | NA | NA |
| Curvularia sp. | + | 64±3 | 3×105 | 0 | 66±6 |
| Fusarium sp. | + | 60±2 | 4×107 | 0 | 76±4 |
| Penicillium italicum | + | ND | TNTC | 0 | 87±3 |
| Penicillium digitatum | + | 84±2 | 9×1011 | 5×104 * | 69±3 |
| Rhizoctonia solani (from rice) | + | 79±2 | NA | NA | NA |
| Rhizoctonia solani (from bent grass) | + | 77±1 | NA | NA | NA |
| Phytophthora sojae | + | 75±1 | NA | NA | NA |
| Phytophthora capsici | + | 74±1 | NA | NA | NA |
+: Viable. TNTC = too numerous to count. NA = not applicable. ND = not determinable.
x = Viability after 5 to 7 days exposure to C. fimbriata when the diameter of the controls (untreated) reached about 8 cm.
y and z = mean value ± standard deviation (SD).
* indicates a significant difference between the control and the treatment by C. fimbriata volatiles (P < 0.05).