Genetic control of meiotic recombination in Petunia hybrida: dosage effect of gene Rm1 on segments Hf1-Lg1 and An2-Rt; role of modifiers

1 August 1991

journal article
Published by Canadian Science Publishing in Genome

Vol. 34 (4) , 515-523
https://doi.org/10.1139/g91-079

Abstract

Populations segregating at locus Rm1 were used to measure recombination within two chromosome segments in Petunia hybrida. Gene Rm1 shows incomplete dominance and action that differs according to marker pair studied. It enhances recombination within the segment Hf1-Lg1 and restores it for the pair An2-Rt. Minor modifier genes exist, which act independent of or epistatic to Rm1 action. Like Rm1, they have effects that differ according to the chromosome segment analyzed, with the effects being more pronounced for strongly linked loci. Some of these genes are probably recessive.Key words: Petunia hybrida, gene Rm1, meiotic recombination, dosage effect.

Keywords

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