Table I.
Effect of isoflavones on initial growth of germinating cysts
| Treatment | Concentration | Strain
P7063
|
Strain P6497
|
||
|---|---|---|---|---|---|
| Hyphal length | Appressoria | Hyphal length | Appressoria | ||
| μm | μm | % | μm | % | |
| Control | 750 ± 230 | 50 | 720 ± 300 | 38 | |
| Daidzein | 1 | 515 ± 50 | 32 | 710 ± 200 | 36 |
| Daidzein | 20 | 610 ± 180 | 44 | 650 ± 150 | 51 |
| Genistein | 1 | 680 ± 260 | 52 | 740 ± 100 | 41 |
| Genistein | 20 | 540 ± 180 | 54 | 640 ± 130 | 46 |
Data from a typical experiment are shown. Germination in all treatment groups at 2 h was 100%. Differences in length of the hyphae and cyst or in the percentage of hyphae forming appressoria are not significant.