coleoptile color

Ed Coe CoeE at missouri.edu
Mon Mar 19 13:51:20 EST 2001


I assume this refers to color in the plumule of the seed
(including the coleoptile).  See the following.

http://www.agron.missouri.edu:80/cgi-bin/sybgw_mdb/mdb3/Phenotype/64418

Note that two inbred lines, 38-11 and Ky27, have been found
to have that characteristic.  Both of these are dominant C1,
whereas most elite inbred lines are c1 or C1-I.  Note that
R1-nj alleles confer plumule color (and scutellum color) and
color in the aleurone tissue on the crown of the endosperm.
However, 38-11 and Ky27 have no aleurone color, so they must
carry another factor, probably a particular allele at the r1
locus, that confers plumule color.

Hope this provides information.  Crosses with a c1 tester,
and with an r1 tester, followed by progeny tests and studies
of the segregation, should test how well this applies in
your case.
Ed Coe

Yoon-Sup So wrote:
>
>  Hello,
>
>  Is there any gene(s) for coleoptile color? I found some white kernels
>  with partially purple (or red) colored coleoptile at the tip. I went
>  through the MaizeDB to find out a similar case without success.
>
>  Would any of youÝhelp me to understand what I observed. Thanks in advance.
>
>  Yoon-Sup So




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