Table 1.
Results from generalized linear model analysis on log-transformed data of glucosinolate concentrations in two tissue types (leaves and flowers) for three genotypes of B. nigra
| Factor | Sinigrin | PE | GB | 4OHGB | 4MeOGB |
|---|---|---|---|---|---|
| Time | ns | ns | ns | *** | ns |
| Tissue | *** | *** | ns | *** | ns |
| Treatment | * | ns | ns | * | ns |
| Genotype | *** | *** | *** | *** | ns |
| Tissue × genotype | ** | *** | ns | * | ns |
Treatment means presence or absence of third-instar caterpillars feeding on flowers during 4 d. Effect of the factor “time” refers to changes over 4 d in intact plants
PE = phenyethylglucosinolate; GB = glucobrassicin; 4OHGB = 4-hydroxyglucobrassicin; 4MeOGB = 4-methoxyglucobrassicin
*P < 0.05; **P < 0.01; ***P < 0.001