The COOP's rd3 is allelic to ct2
--Stinard, P
The COOP has been maintaining a mutant named rd3 for many
years. This reduced plant height mutant conditions shortened
internodes and bifurcated ears. This mutant was obtained from
Allan Caspar, and first grown by the Maize COOP in 1962. The
compact plant mutant ct2 has a similar phenotype, and crosses
were made in 1994 between plants homozygous for the two
mutants. F1's were grown in the COOP's 1994 winter nursery,
and all progeny had the compact plant phenotype, indicating
allelism. Subsequent pedigree searches indicated that ct2 also
originated from Allan Caspar, so the COOP's rd3 and ct2 alleles
may actually be identical. Until this is resolved, it is suggested
that these mutants be kept separate, and that the COOP's rd3
be redesignated ct2-rd3.
It should be noted that ct2-rd3 is not at all related to the
locus more recently named rd3 by Matz et al. (MNL
65:104-105).
Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors
Return to the MNL 71 On-Line Index
Return to the Maize Newsletter Index
Return to the MaizeGDB Homepage