Abstract
Russet Burbank tubers from plants which died prematurely (low fertility plots) accumulated significantly greater amounts of reducing sugars in storage than tubers from plants which were adequately fertilized. Also, a significantly greater difference in relative amounts of reducing sugars between the apical and basal portions was obtained from tubers of the low fertilizer regime. The basal portion had a three times greater amount of sugars than the apical portion. This is of particular interest to processors of French fries who try to obtain uniformity of color in processed fries. The difference in total reducing sugar accumulation in storage between tubers of high and low fertilizer regimes was greater at the lower storage temperatures. Tubers allowed to mature in the ground (second harvest date) accumulated less sugars in storage than tubers dug shortly after vine kill.
Resumen
Tubérculos Russet Burbank de plantas que murieran prematuramente (parcelas de baja fertilidad) acumularon significativamente cantidades mayores de azúcares reductores en el almacenamiento que tubérculos de plantas con fertilización adecuada. También, una diferencia significativamente más grande en las cantidades relativas de azúcares reductores entre las porciones afical y basal fueron obtenidos de tubérculos bajo el régimen de fertilizantes bajo. La porción basal tuvo tres veces más azúcares que la porción afical. Esto es de interés particular para los procesadores de papas fritas quienes tratan de obtener uniformidad en el color de las papas fritas. La diferencia en la acumulación total de azúcares reductores en almacenamiento entre los tubérculos de alta y baja fertilización fue mayor a las temperaturas más bajas de almacenamiento. Los tubérculos que se dejaron madurar en el suelo acumularon menos azúcares en almacenamiento que los tubérculos cosechados a corto tiempo de matar el follaje.
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Additional information
Scientific paper No. 4871. Project No. 1949. College of Agriculture Research Center, Washington State University, Pullman, Washington 99163. Financed in part by the Washington State Potato Commission and grants from potato processors of Washington.
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Iritani, W.M., Weller, L. Influence of low fertility and vine killing on sugar development in apical and basal portions of Russet Burbank potatoes. American Potato Journal 55, 239–246 (1978). https://doi.org/10.1007/BF02852131
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DOI: https://doi.org/10.1007/BF02852131