Summary
Pollen tube growth was investigated in a diallelic crossing design with seven genotypes of the diploid wild potato species Solanum commersonii, accession O/S UR-9, CIP 762459. Pollen tube growth in the style was recorded using a combined quantitative and qualitative evaluation scale. Clear-cut differences in pollen tube growth behavior in compatible and in partially or completely incompatible crosses were detected. Diallelic crossing of the seven randomly chosen genotypes, intercrossing within two progeny families, and backcrossing of two progeny populations to the parents revealed the existence of a one-locus gametophytic system of stylar incompatibility. The S-allele status of all genotypes investigated was determined.
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Trognitz, B.R. Analysis of pollen tube growth in situ to investigate self-incompatibility in the wild potato Solanum commersonii . Euphytica 86, 149–156 (1995). https://doi.org/10.1007/BF00022021
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DOI: https://doi.org/10.1007/BF00022021