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Galena Russet: a Long Dormancy, Dual-Purpose Potato Cultivar Exhibiting Low Asparagine, Cold-Sweetening Resistance, and Enhanced Protein Content

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Abstract

Galena Russet is a potato variety notable for high marketable yields resulting from greater resistance to external tuber defects compared to industry standard Russet Burbank. Galena Russet exhibits long dormancy, cold-sweetening resistance, and higher protein content than standard varieties. In early-season trials conducted over 3 years in the Pacific Northwest, Galena Russet produced total and U.S. No. 1 yields similar to standard varieties. During 4 years of full-season trials in five western states, Galena Russet produced greater total and U.S. No. 1 yields than Russet Burbank and Ranger Russet in most locations, with specific gravities greater than Ranger Russet on average. Galena Russet produced light-colored fries out of storage with temperatures as low as 4.4 °C, demonstrating its cold-sweetening resistance and low reducing sugar concentrations. Moreover, the asparagine concentration of Galena Russet tubers was 42 and 36% lower than Russet Burbank and Ranger Russet tubers, respectively, following 2 months of storage. Low reducing sugar and asparagine concentrations may predict low acrylamide formation during processing. Galena Russet has shown greater resistance to PVY than Russet Burbank and Ranger Russet.

Resumen

Galena Russet es una variedad de papa notable por altos rendimientos comerciales como resultado de su mayor resistencia a los defectos externos de tubérculos en comparación con el estándar de la industria de Russet Burbank. Galena Russet exhibe dormancia larga, resistencia al endulzamiento por frío, y contenido mas alto de proteína que las variedades estándar. En ensayos tempranos que se efectuaron durante tres años en el Pacífico Noroccidental, Galena Russet produjo rendimiento total y U.S. Número 1 similar al de las variedades estándar. Durante cuatro años de ensayos de ciclo completo en cinco Estados occidentales, Galena Russet produjo mayor rendimiento total y U.S. 1 que Russet.

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Acknowledgments

The authors thank Chelsey Lowder, Melissa Bertram, Carla Poulson, Lura Schroeder, Brian Schneider, Darren Hall, Nora Fuller, Zach Holden as well as our collaborators in the Western Regional Potato Variety Trials and the Idaho, Oregon, and Washington Potato Commissions for their contributions to the development and release of Galena Russet. We also express thanks to our industry cooperators for their substantial contributions to this research effort. Development of Galena Russet was partially funded by USDA/NIFA.

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Correspondence to R. R. Spear.

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Spear, R.R., Novy, R.G., Whitworth, J.L. et al. Galena Russet: a Long Dormancy, Dual-Purpose Potato Cultivar Exhibiting Low Asparagine, Cold-Sweetening Resistance, and Enhanced Protein Content. Am. J. Potato Res. 98, 51–63 (2021). https://doi.org/10.1007/s12230-020-09817-w

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  • DOI: https://doi.org/10.1007/s12230-020-09817-w

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