Table 1.
Results of two-way ANOVA of the effects of mycorrhizal inoculum and nutrient supplement on plant variables.
| Mycorrhizal inoculum | Nutrient supplement | Mycorrhizal inoculum × Nutrient supplement | |
|---|---|---|---|
| Shoot dry biomass | 0.131 (0.721) | 1.020 (0.401) | 0.415 (0.744) |
| Root dry biomass | 31.163 (0.000) | 1.978 (0.144) | 2.500 (0.084) |
| Total dry biomass | 8.639 (0.007) | 0.544 (0.657) | 1.118 (0.361) |
| Shoot P concentration | 817.62 (0.000) | 2.770 (0.064) | 2.580 (0.077) |
| Root P concentration | 205.32 (0.000) | 0.648 (0.592) | 2.099 (0.127) |
| Total P content | 370.05 (0.000) | 1.252 (0.313) | 2.306 (0.102) |
| Shoot N content | 2.809 (0.107) | 1.471 (0.247) | 0.633 (0.601) |
| Root N content | 21.69 (0.000) | 0.759 (0.528) | 2.073 (0.13) |
| Total N content | 1.868 (0.184) | 1.515 (0.236) | 1.213 (0.326) |
| Shoot 15N (% transferred) | 46.68 (0.000) | 18.27 (0.000) | 0.723 (0.499) |
| Root 15N (% transferred) | 41.75 (0.000) | 9.48 (0.002) | 2.76 (0.09) |
| Total 15N (% transferred) | 1.447 (0.245) | 20.36 (0.000) | 1.203 (0.323) |
F and p values are indicated. Significant p values (≤0.05) are indicated in bold. Root 15N content was not significantly different between root-free compartment supplied with different nutrient supplements in the NM treatments. However, in M plants, the 15N content of the roots was significantly lower when the root-free compartment was amended with chitin than with the other nutrient supplements (Supplementary Figure S1).