Summary
The origin and nature of the diploid cultivated potato species S. ajanhuiri Juz. et Buk. was studied. Several lines of evidence indicate that S. ajanhuiri might be derived from natural crosses between primitive cultivars of the diploid species S. stenotomum and the wild species S. megistacrolobum. Morphological comparisons were made between S. stenotomum x S. megistacrolobum F1 hybrids and naturally occurring S. ajanhuiri to investigate this hypothesis. Comparisons were also made between S. ajanhuiri x S. stenotomum crosses and the F2 generation of the first-mentioned cross.
Crosses between the two major groups of S. ajanhuiri cultivars, Ajawiri and Yari, showed not only genetic breakdown but also a wide range of phenotypic variation similar to those of artificial F2 families of S. stenotomum x S. megistacrolobum. Furthermore, there was strong evidence showing that the Yari group of S. ajanhuiri could almost certainly be an F1 S. stenotomum x S. megistacrolobum hybrid, whereas the Ajawiri group could be a backcross of an F1 hybrid to S. stenotomum. These results added further support to the hypothesis of a hybrid origin of S. ajanhuiri, as well as indicating its putative parents. It is suggested that this hybridogenic taxon be retained at the species level under the name Solanum x ajanhuiri.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bukasov, S. M., 1941. (The origin of species of potatoes). Soviet Plant Industry Record No. 1: 157–164.
Bukasov, S. M., 1964. The origin of species of the series Andigena, section Tuberarium, genus Solanum. International Botanical Congress (Edinburgh) 10: 341–342.
Hawkes, J. G., 1944. Potato collecting expeditions in Mexico and South America. II. Systematic classification of the collections. Imperial Bureau of Plant Breeding and Genetics, Cambridge.
Hawkes, J. G., 1945. The indigenous American potatoes and their value in plant-breeding. Empire J. Exptl. Agric. 13: 11–40.
Hawkes, J. G., 1958. Potatoes: Taxonomy, cytology and crossability. In, H. Kappert & Ru Rudorf (Eds), Handbuch der Pflanzenzüchtung. 2nd. Ed., Vol. III, Chapter 1: 1–43.
Hawkes, J. G., 1963. A revision of the tuber-bearing Solanums. (2nd. Ed., pp. 76–181). Scottish Plant Breeding Station Record.
Hawkes, J. G., 1967. The history of the potato. J. Roy. Hort. Soc. 92: 207–224; 249–262; 288–302.
Hawkes, J. G. & J. P. Hjerting, 1969. The potatoes of Argentina, Brazil, Paraguay, and Uruguay. A biosystematic study. Oxford University Press.
HHamán, Z., 1975. The origin and nature of Solanum ajanhuiri Juz. et Buk., a South American cultivated diploid potato. Ph. D. Thesis, University of Birmingham.
Huamán, Z., J. G., Hawkes & P. R., Rowe, 1980. Solanum ajanhuiri: an important diploid potato cultivated in the Andean Altiplano. Economic Botany 34(4): 335–343.
Huamán, Z., J. G. Hawkes & P. R. Rowe, 1982. Chromatographic studies on the origin of the cultivated diploid potato Solanum ajanhuiri Juz. et Buk. Am. Potato J. (in press).
Simmonds, N. W., 1963. Abbreviations of potato names. European Potato J. 6: 186–190.
Swaminathan, M. S. & H. W., Howard, 1953. The cytology and genetics of the potato (Solanum tuberosum) and related species. Bibliographia genet. 16: 1–192.
Ugent, D. 1970. The potato. What is the botanical origin of this important crop plant, and how did it first become domesticated? Science 170: 1161–1165.
Vavilova, M. A., 1971. (Frost-resistant potato species and their use in interspecific hybridization). Bull Appl. Bot. Genet. and Plant Breed. 44: Fasc. 1, 144–162.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Huaman, Z., Hawkes, J.G. & Rowe, P.R. A biosystematic study of the origin of the cultivated diploid potato, Solanum x Ajanhuiri Juz. et Buk.. Euphytica 31, 665–676 (1982). https://doi.org/10.1007/BF00039205
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00039205