| Code | Definition | Number of Accessions |
| 1 | P-value 0.4 or higher, considered to be Al tolerant. Code based on P-values for comparing the levels of Al (control vs. 50M AlCl3) for each accession. | 14 |
| 2 | P-value between 0.06 and 0.39, PI considered to be Al sensitive. Code based on P-values for comparing the levels of Al (control vs. 50M AlCl3) for each accession. | 109 |
| 3 | P-value between <.0001 and 0.05, PI considered highly Al sensitive. Code based on P-values for comparing the levels of Al (control vs. 50M AlCl3) for each accession. | 197 |