Mutant seed characters of possible value from x-ray experiments:
| Mutant | Description | Linkage Indications | Notes |
| Scarreda | Seed small and distinctly scarred. Separation clear. Only best sc seeds give usable plants. | Close to Y. | |
| Scarredb | 1/8 to 1/2 volume, usually scarred. About 3/4 are germless. | Possible with Y. | |
| Scarredc | 1/8 to 3/4 volume. Have fair embryos, and larger seeds give fairly good plants. | Possibly with Pr. | |
| Etched | Seed full size, etched pattern distinct, separation clear, and viability good. Somewhat resembles scarred but can be separated from it. | Possibly with Pr. | All et seeds give virescent seedlings, turning fine striped then green (Viability good.) |
| Rudimentary1 | 2/3 height and width, 1/5 thickness, germless. Can be separated for aleurone color, wx, etc. | With Pr. | |
| Tiny | Very small seed but germinates and produces small seedlings. | None. | Possible dominant effect in partial dwarfing of heterozygous plants. |
| Thin | Normal height and width but less than 1/3 thickness to empty. Some have germs and a few might grow. | With CWx | |
| Miniature3 | Reduces size of seed, especially thickness. Possibly overlaps normal. | Probably with Wx. | Partly eliminated in pollen, though pollen appears normal. |
| Miniature9 | 3/4 to full height and width, 1/2 thickness. May overlap normal. | With Pr. | |
| Miniature18 | 1/2 to 2/3 height and width and 1/3 to 1/2 thickness of normal. Clear separation. Low ratio. Good viability. | With Pr. | |
| Germlessa | Full size endosperm, typical germless. | Possibly with Y. | Not induced. |