Table 1.
Effects of application of IAA, PCIB and NPA on the infection of Arabidopsis thaliana roots by Orobanche aegptiaca
| % Host roots infected |
||
|---|---|---|
| Length of treatment (d) | 13 | 25 |
| Control (beads – IAA) | 75 ± 2·0 | 90 ± 3·1 |
| 5 × 10−5m IAA | 62 ± 4 | 79 ± 2·6 |
| 10−4m IAA | 49 ± 3·2 | 57 ± 3·5 |
| 10−3m IAA | 2·8 ± 0·6 | 7 ± 1·2 |
| 15 µm PCIB | 0 | 11 ± 2·1 |
| 50 µm NPA | 11 ± 0·6 | 16 ± 1·4 |
| 100 µm NPA | 4 ± 0 | 12 ± 1·7 |
IAA was applied in Dowex beads and PCIB and NPA were applied locally in solution. Percentage infection was calculated from the number of plants infected from a total of 24 plants. The results are given as the mean of three replicates with s.d.