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:
http://www.maizegdb.org/db_images/Variation/cd5207-1613-0283/70.jpg
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:
http://www.maizegdb.org/db_images/Variation/cd5207-1613-2875/11.jpg
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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