Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina
Wild potato species, Solanum infundibuliforme Phil. (ifd) (2n = 2x = 24), S. gourlayi Hawkes (grl) (2n = 4x = 48) and presumed grl–ifd hybrids (2n = 4x = 48) were collected from a narrow gorge known as Quebrada de Inca Cueva, located in Jujuy province, Argentina. To explore the possibility of gene f...
| Autores principales: | , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Springer
2019
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| Materias: | |
| Acceso en línea: | https://link.springer.com/article/10.1007/s10722-014-0149-7 http://hdl.handle.net/20.500.12123/4556 https://doi.org/10.1007/s10722-014-0149-7 |
| _version_ | 1855483455661408256 |
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| author | Ispizua, Veronica Nilda Camadro, Elsa Lucila Clausen, Andrea Martina |
| author_browse | Camadro, Elsa Lucila Clausen, Andrea Martina Ispizua, Veronica Nilda |
| author_facet | Ispizua, Veronica Nilda Camadro, Elsa Lucila Clausen, Andrea Martina |
| author_sort | Ispizua, Veronica Nilda |
| collection | INTA Digital |
| description | Wild potato species, Solanum infundibuliforme Phil. (ifd) (2n = 2x = 24), S. gourlayi Hawkes (grl) (2n = 4x = 48) and presumed grl–ifd hybrids (2n = 4x = 48) were collected from a narrow gorge known as Quebrada de Inca Cueva, located in Jujuy province, Argentina. To explore the possibility of gene flow and introgression within and between populations and ploidy levels, accessions collected in this gorge and others from neighboring valleys, identified as Solanum oplocense Hawkes (opl), grl and ifd, were characterized according to chromosome number, morphological characters, pollen–pistil relations and seed set following controlled diallelic crosses. Multivariate analysis for 36 morphological characters recorded in individual plants revealed considerable variability. Principal coordinates analysis, revealed that tetraploid populations belonging to presumed hybrids and grl formed a huge swarm in which individuals from different populations appeared intermixed. In one accession (ClI 1715), variation in morphological phenotypes in diploid and tetraploids plants were detected, as well as individuals with intermediate characters between the putative parents. The crossing results revealed the action of postzygotic barriers between ifd and presumed hybrids as well as between ifd–opl and grl–opl. These barriers were incomplete as normal seeds were obtained in certain genotypic combinations. In intraspecific crosses and grl × presumed hybrids crosses, pollen tubes grew normally to the base of the style producing fruits with a variable number of seeds in each. The breeding strategy of these species has resulted in complex mixtures of parental genotypes, advanced hybrid generations and backcrosses in this gorge. The implications of these results for germplasm conservation are discussed. |
| format | Artículo |
| id | INTA4556 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA45562019-03-08T13:12:28Z Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina Ispizua, Veronica Nilda Camadro, Elsa Lucila Clausen, Andrea Martina Papa Plantas Silvestres Hibridación Flujo Genético Germoplasma Potatoes Wild Plants Hybridization Gene Flow Germplasm Quebrada de Inca Cueva, Jujuy Solanum infundibuliforme Solanum gourlayi Wild potato species, Solanum infundibuliforme Phil. (ifd) (2n = 2x = 24), S. gourlayi Hawkes (grl) (2n = 4x = 48) and presumed grl–ifd hybrids (2n = 4x = 48) were collected from a narrow gorge known as Quebrada de Inca Cueva, located in Jujuy province, Argentina. To explore the possibility of gene flow and introgression within and between populations and ploidy levels, accessions collected in this gorge and others from neighboring valleys, identified as Solanum oplocense Hawkes (opl), grl and ifd, were characterized according to chromosome number, morphological characters, pollen–pistil relations and seed set following controlled diallelic crosses. Multivariate analysis for 36 morphological characters recorded in individual plants revealed considerable variability. Principal coordinates analysis, revealed that tetraploid populations belonging to presumed hybrids and grl formed a huge swarm in which individuals from different populations appeared intermixed. In one accession (ClI 1715), variation in morphological phenotypes in diploid and tetraploids plants were detected, as well as individuals with intermediate characters between the putative parents. The crossing results revealed the action of postzygotic barriers between ifd and presumed hybrids as well as between ifd–opl and grl–opl. These barriers were incomplete as normal seeds were obtained in certain genotypic combinations. In intraspecific crosses and grl × presumed hybrids crosses, pollen tubes grew normally to the base of the style producing fruits with a variable number of seeds in each. The breeding strategy of these species has resulted in complex mixtures of parental genotypes, advanced hybrid generations and backcrosses in this gorge. The implications of these results for germplasm conservation are discussed. EEA Balcarce Fil: Ispizua, Veronica Nilda. Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Camadro, Elsa Lucila. Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Clausen, Andrea Martina. Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina 2019-03-08T13:08:52Z 2019-03-08T13:08:52Z 2015-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s10722-014-0149-7 http://hdl.handle.net/20.500.12123/4556 0925-9864 1573-5109 https://doi.org/10.1007/s10722-014-0149-7 eng info:eu-repo/semantics/restrictedAccess application/pdf Springer Genetic Resources and Crop Evolution 62 (2) : 235–253 (February 2015) |
| spellingShingle | Papa Plantas Silvestres Hibridación Flujo Genético Germoplasma Potatoes Wild Plants Hybridization Gene Flow Germplasm Quebrada de Inca Cueva, Jujuy Solanum infundibuliforme Solanum gourlayi Ispizua, Veronica Nilda Camadro, Elsa Lucila Clausen, Andrea Martina Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina |
| title | Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina |
| title_full | Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina |
| title_fullStr | Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina |
| title_full_unstemmed | Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina |
| title_short | Variation patterns in natural populations of wild potatoes along Quebrada de Inca Cueva, northwestern Argentina |
| title_sort | variation patterns in natural populations of wild potatoes along quebrada de inca cueva northwestern argentina |
| topic | Papa Plantas Silvestres Hibridación Flujo Genético Germoplasma Potatoes Wild Plants Hybridization Gene Flow Germplasm Quebrada de Inca Cueva, Jujuy Solanum infundibuliforme Solanum gourlayi |
| url | https://link.springer.com/article/10.1007/s10722-014-0149-7 http://hdl.handle.net/20.500.12123/4556 https://doi.org/10.1007/s10722-014-0149-7 |
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