The mutant sh*-N1544 is not allelic to sh2 or bt1. It is a shrunken (sh2-type) kernel, reduced color with ACR. See a picture of the origin ear at URL:
Note that most mutant kernels are nearly colorless. I have a small amount of this seed available to the first person who requests it, if the mutant is not yet available from the Co-op.
The mutant nec*-N200B presents an interesting physiology problem. See the photo at this URL:
This picture shows two nec*-N200B
mutant seedlings with necrotic crossbands and associated rolled-leaf distortion
(probably resulting from lack of turgidity in necrotic tissue).
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