Summary
The purpose of this study was to determine female and male fertility, and self-compatibility within 26 families derived from inter-mating the F1 hybrids from the cross,S. phureja-haploidS. tuberosum. The F1 hybrids involved 5S. phureja selections (P.I.’s 195198, 225685, 225696, 243462, 243466) and 2 haploids (US-W 1 from Katahdin and US-W 42 from Chippewa).
Fertility tests were made in the field, greenhouse and laboratory. Female fertility tests were carried out in the field. Bulked pollen of five or more plants was used in order to pollinate each plant in the family. Male fertility was tested by pollen shedding, pollen germination and controlled sib-matings in the field. Self-compatibility tests were made in an air-conditioned greenhouse using the decapitation technique.
Sixty-three percent of the plants were female fertile and77% were male fertile. Pollen-shed was an efficient method of determining male fertility in these materials. A low level of pseudo self-compatibility occurred.
The vigor of most plants, the high frequency of flowering, and the high incidence of female and male fertility indicated that this material will be useful in exploring potato breeding at the diploid level as well as in genetic and cytogenetic studies.
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Formerly Rockefeller Foundation Scholar, Department of Horticulture, University of Wisconsin
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Perez-Ugalde, G., Hougas, R.W. & Peloquin, S.J. Fertility of S. phureja-haploid S. tuberosum F2 hybrids. American Potato Journal 41, 256–262 (1964). https://doi.org/10.1007/BF02855156
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DOI: https://doi.org/10.1007/BF02855156