Summary
The linkage relationship of a nuclear male sterile locus, ms-10, was tested with two enzyme marker loci known to be on the same chromosome (long arm of chromosome 2). The results indicate the gene order is Est-1 — 18 cM — Prx-2 — 1.5 cM — ms-10. The linkage intensity of ms-10 and Prx-2 (1.5 cM) suggests that Prx-2 might provide a selectable marker for male-sterility. In accordance with this idea, the ms-10 allele was placed in cis with a rare-allele of Prx-2 (Prx-2 1). Selection on the basis of the codominant Prx-2 1 allele should allow for more rapid and efficient transfer of the recessive male sterile allele into an array of genetic backgrounds, thus promoting its use in hybrid seed production.
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Communicated by A.L. Kahler
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Tanksley, S.D., Rick, C.M. & Vallejos, C.E. Tight linkage between a nuclear male-sterile locus and an enzyme marker in tomato. Theoret. Appl. Genetics 68, 109–113 (1984). https://doi.org/10.1007/BF00252324
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DOI: https://doi.org/10.1007/BF00252324