Tests for a cytoplasm that restores genetic male sterile-1

Inbred A188 does not have a cytoplasm that restores ms1. Selfs of plants shown by test crosses to be A188/ms segregated for male sterility.

Similar tests of the "standard normal" line derived from a T6-9b stock did not segregate for male sterility. Selfs and test crosses of those progeny are being grown in 1985. Test crosses on male-sterile plants that have only male steriles will identify plants that are ms but fertile because of a restorer cytoplasm. I will believe it only when those results are obtained.

Charles R. Burnham

Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors.

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