Crossability of some green-peach-aphid-resistant tuber-bearing solanums,potential bridging species,andSolanum tuberosum ssptuberosum |
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| Authors: | D. W. Sams P. D. Ascher F. I. Lauer |
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| Affiliation: | 1. Hassan II Institute of Agronomy, BP704, Rabat-Agdal, Morocco
2. Department of Horticultural Science, University of Minnesota, 55108, St. Paul, Minnesota
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| Abstract: | Blue light fluorescence microscopy was found to be a quick and easy procedure for assessing pollen tube development in interspecific pollinations ofSolanum. Based on penetration of pollen tubes to the base of the style, several combinations of green-peach-aphid-resistant species and potential bridging species to S.tuberosum ssp.tuberosum should be considered for embryo culture. Sterile or highly infertile hybrids were obtained between green-peach-aphid-resistantS. tuquerrense andS. tuberosum ssp.tuberosum and are described. Slightly fertile hybrids were obtained betweenS. tuquerrense andS. polytrichon, a species compatible withS. tuberosum ssp.tuberosum. |
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