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Potato germplasm collecting expedition to Mexico in 1997: Taxonomy and new germplasm resources |
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| Authors: | David M. Spooner Antonio Rivera-Peña Ronald G. van den Berg Konrad Schüler |
| Affiliation: | 1. USDA, Agricultural Research Service, Department of Horticulture, University of Wisconsin, 1575 Linden Drive, 53706-1590, Madison, WI, USA 2. Programa Nacional de Papa, Institute Nacional Investigaciones Forestales Agricolas y Pecuarias (INIFAP), Suc.“A”, C.P. 52 140, Apdo. Postal 31, Metepec, Estado de Mexico, Mexico 3. Department of Plant Taxonomy, Wageningen Agricultural University, Generaal Foulkesweg 37, P.O. Box 8010, 6700 ED, Wageningen, The Netherlands 4. Institut für Pflanzengenetik und Kulturpflanzenforschung Gatersleben (IPK), Genbank, Auβenstelle Groβ Lüsewitz, D-18190, Groβ Lüsewitz, Germany |
| Abstract: | Wild potato (Solanum sect.Petota) germplasm has been collected in Mexico on nine major expeditions, as determined by 20 collections or more from each expedition currently at the United States potato genebank, the National Research Support Program-6 (NRSP-6). These have resulted in 609 accessions with good collection data. In addition, NRSP-6 has germplasm of approximately 90 other Mexican collections that are unspecific regarding date or place of collection. This expedition was funded to collect those remaining collections with no or little germplasm:Solanum clarum,S. xedinense, S. hintonii, S. hjertingii var.physaloides, S. leptosepalum, S. lesteri, S. macropilosum, S. xmichoacanum, S. xsambucinum, andS. stenophyllidium. In addition, some species and species groups (species groups indicated in parentheses) have unresolved taxonomic problems that needed clarification by additional field collections. These are (S. agrimonifolium and S.oxycarpum), (S. brachycarpum, S. guerreroense, S. hougasii, andS. iopetalum - theS. brachycarpum complex), (S. fendleri, S. papita, S. stoloniferum - theS. stoloniferum complex),S. leptosepalum, andS. macropilosum. We conducted a wild potato germplasm collecting expedition in Mexico from August 22 to October 31, 1997. Our 103 collections, 71 as germplasm collections, provide the first germplasm samples forS. hjertingii var.physaloides,S. leptosepalum, andS. macropilosum. They provide additional germplasm of the rare speciesS. clarum, S. xedinense, S. lesteri, S. xmichoacanum, S. xsambucinum, andS. stenophyllidium. We additionally gathered germplasm and field data to help resolve taxonomic difficulties inS. agrimonifolium andS. oxycarpum, theS. brachycarpum complex, and theS. stoloniferum complex. |
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