Table 5. Models of abundance of psyllid nymphs versus foliar amino acids.
| adj. r 2 | d.f. | F-ratio | P | |
|---|---|---|---|---|
| C. eucalypti | ||||
| Oct | ||||
| Ile, Leu, Thr & Val + 8 non-essential AAs [PC1] | 18.6% | 1 | 5.58 | 0.029 |
| Lys(-ve) & Met + 2 non-essential AAs + 2 amine metabolites [PC2] | 38.3% | 2 | 7.21 | 0.005 |
| 1 non-essential AA + 1 amine metabolite [PC3] | 43.8% | 3 | 6.19 | 0.005 |
| Dec | ||||
| Ile, Leu, Thr & Val + 5 non-essential AAs [PC1] | 10.8% | 1 | 5.83 | 0.021 |
| Lys(-ve) & Met + 3 non-essential AAs + 2 amine metabolites [PC2] | 34.7% | 2 | 11.64 | < 0.001 |
| 1 non-essential AA + 1 amine metabolite [PC3] | 33.0% | 3 | 7.56 | < 0.001 |
| Trp [PC4] | 47.0% | 4 | 9.86 | < 0.001 |
| C. bipartita | ||||
| Oct | ||||
| Ile, Leu, Thr & Val + 4 non-essential AAs [PC1] | 62.2% | 1 | 32.27 | < 0.001 |
| Lys, Met(-ve) & Trp + 4 non-essential AAs + 2 amine metabolites [PC2] | 69.4% | 2 | 22.60 | < 0.001 |
| Met + 1 non-essential AA + 1 amine metabolite [PC3] | 67.9% | 3 | 14.41 | < 0.001 |
Models are stepwise regressions using groupings of amino acids based on their component factor scores.