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Core Collections of Potato (Solanum) Species Native to the USA

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Abstract

Potato has two wild relatives native to the USA, Solanum jamesii (jam) and S. fendleri (fen). Core collections are a useful tool for genebanks, identifying a ranked minimum number of samples that together encompass most of the total genetic diversity. With diversity measured as presence of AFLP bands, we made core collections for each species such that >90 % of diversity was captured in a minimum of populations. For fen, bulks containing about 25 % of populations accomplished that standard. For jam, a single “mega-population” at Mesa Verde, CO, consisting of many thousands of plants, was found to encompass 82 % of the AFLP bands detected in all samples across the entire USA range, and adding three more populations captured a total of >90 %. Core members for both jam and fen with the most diversity originated from the northern part of the range. That suggests that these areas merit more collecting. If resources for germplasm preservation and evaluation are limited, samples in the core collections should take priority.

Resumen

La papa tiene dos parientes silvestres originarios de los EEUU, Solanum jamesii (jam) y S. fendleri (fen). Las colecciones núcleo (core collections) son herramientas útiles para los bancos de germoplasma, ya que permiten identificar un número mínimo clasificado de muestras que juntas incluyen la mayoría de la diversidad genética total. Con la diversidad medida como la presencia de bandas de AFLP, hicimos colecciones núcleo para cada especie de manera que >90 % de la diversidad es capturada con el mínimo número de poblaciones. Para fen, grupos conteniendo alrededor del 25 % de las poblaciones cumplieron este estándar. Para jam, una única “megapoblación” colectada en Mesa Verde, CO, consistente de varios miles de plantas, fue capaz de incluir el 82 % de todas las bandas de AFLP que fueron detectadas a lo largo del rango geografico de todas estas poblaciones de los EEUU. Agregando solo tres más de jam, fue posible capturar un total de >90 % de la diversidad. Poblaciones de estas colecciones-núcleo, tanto en jam como fen, expresando la mayor diversidad se originaron en la parte norte del rango geografico de estas especies. Esto sugiere que estas áreas ameritan más colectas. Si los recursos para la preservación y evaluación de germoplasma son limitados, las poblaciones contenidas en las colecciones núcleo deberían tener prioridad.

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Acknowledgment

The authors thank USDA/ARS/PEO Beltsville for funding the collecting expeditions.

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Authors and Affiliations

  1. USDA/Agricultural Research Service, US Potato Genebank, 4312 Hwy 42, Sturgeon Bay, WI, 54235, USA

    John Bamberg, Alfonso del Rio & Charles Fernandez

  2. Pharmaceutical and Biomedical Sciences, Ohio Northern University, 525 S. Main Street, Ada, OH, 45810, USA

    David Kinder

  3. Natural History Museum of Utah, Anthropology Department, University of Utah, 301 Wakara Way, Salt Lake City, UT, 84108, USA

    Lisbeth Louderback

  4. Department of Conservation, Red Butte Garden and Arboretum, University of Utah, 300 Wakara Way, Salt Lake City, UT, 84108, USA

    Bruce Pavlik

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  1. John Bamberg
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  2. Alfonso del Rio
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  3. David Kinder
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  4. Lisbeth Louderback
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  5. Bruce Pavlik
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  6. Charles Fernandez
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Correspondence to John Bamberg.

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Bamberg, J., del Rio, A., Kinder, D. et al. Core Collections of Potato (Solanum) Species Native to the USA. Am. J. Potato Res. 93, 564–571 (2016). https://doi.org/10.1007/s12230-016-9536-2

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