Table 1. Plant vigor (growth and yield) variables (mean ± SD, n= 3) in different selected biocontrol treatments of Botyris cinerea infected faba bean plants in comparison to uninfected (water sprayed) plants (in bold).
St 1 and St 2 refer to the two Streptomyces strains used to extract mycelia (Myc) or metabolites (Met). Seed refer to the seed treatment with St 1 or St 2 spore suspension.
| Treatment | |||
|---|---|---|---|
| Plant growth | |||
| Shoot length (cm) | Root length (cm) | Leaves No. | |
| St 1 Met | 99.0 ± 0.8* | 11.5 ± 0.8 | 18.0 ± 0.8* |
| St 2 Met | 111.6 ± 0.5* | 12.2 ± 0.4* | 19.4 ± 0.5* |
| St 1 Met + St 2 Met | 91.5 ± 4.2 | 12.5 ± 0.9* | 20.7 ± 1.6* |
| St 1 Met + St 2 Myc | 92.2 ± 4.6 | 12.3 ± 0.8* | 18.7 ± 1.8* |
| St 1 Seed + St 2 Met | 91.2 ± 3.9 | 12.0 ± 1.0* | 17.6 ± 1.9 |
| St 1 Myc + St 2 Seed | 85.3 ± 4.0 | 11.3 ± 1.1 | 18.3 ± 1.4* |
| Uninfected plants | 86.0 ± 3.2 | 10.2 ± 0.5 | 15.4 ± 0.5 |
| Plant Yield | |||
| Fresh Weight (g) | Dry Weight (g) | Pod No. | |
| St 1 Met | 42.8 ± 0.8 | 12.3 ± 0.8* | 2.4 ± 0.8* |
| St 2 Met | 114.5 ± 10.3* | 18.9 ± 1.2* | 3.5 ± 0.8* |
| St 1 Met + St 2 Met | 85.2 ± 14.0* | 17.6 ± 1.7* | 3.5 ± 0.7* |
| St 1 Met + St 2 Myc | 85.2 ± 14.4* | 21.6 ± 1.5* | 3.8 ± 0.7* |
| St 1 Seed + St 2 Met | 59.6 ± 4.1* | 14.8 ± 1.9* | 3.5 ± 0.7* |
| St 1 Myc + St 2 Seed | 56.6 ± 14.1 | 13.4 ± 1.7* | 3.0 ± 0.7* |
| Uninfected plants | 45.5 ± 1.2 | 10.5 ± 0.2 | 1.5 ± 0.3 |
Notes.
*
Significant difference compared to uninfected plants (t-test, p < 0.05).