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.