| Name | I-21 |
| Accession number | K-28582 |
| Pedigree | |
| Species | TR.AE |
| Bot. variety | ferrugineum[541] |
| Habit | I |
| Locality | CHN:Shanxi |
| Gene | |
| Synonym | |
| Status | LV |
| Year | 1932 |
| Note |
| Originator | |
| Recommended for | |
| Years of use | |
| Maturing | |
| Market class | |
| Quality | |
| Resistance | |
| Tolerance | |
| Moderate resistance | |
| Susceptibility | |
| Sensitivity | |
| Insensitivity | |
| Morphology | |
| Comments |