o1 is reported (W.R. Singleton and D.F. Jones, unpublished) as being near gl3. We received from the MGSC a sample segregating o1 and gl3. A double recessive o1 gl3 plant was crossed to IAC Maya br2 and selfed. The resulting opaque glossies were lethal. Opaque seeds were pollinated by our Ga-S 01 adapted material and selfed. In one ear we counted 51 o1 seeds in a total of 267 seeds. This gives p = 38.2 ± 4.8 and would put o1 around position 80 in chromosome four.
Luiz Torres de Miranda and Luiz Eugenio Coelho de Miranda
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