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Northstar: A high-yielding, white cold-storage chip** potato cultivar with attractive oval tubers resistant to late blight

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Abstract

‘Northstar’ (V0123-25) is a white-skinned, white-flesh, mid-season maturing potato cultivar suitable for cold storage chip**. It was selected from a cross made at the Lethbridge Research Centre of Agriculture and Agri-Food Canada between ‘Niska’ and ND860-2. In trials across western Canada, full season marketable yields of Northstar were 6% to 31% greater than ‘Snowden’ and 11% greater than ‘Norchip’. Specific gravity of Northstar has averaged 0.009 and 0.012, less than Snowden and ‘Atlantic’, respectively. Chip color was superior to Norchip, Snowden and Atlantic. Northstar showed an excellent potential for direct chip** out of a 6 C storage. Tubers of Northstar are uniform, oval, smooth to slightly flaky in texture, with shallow eyes. The incidence of hollow heart and internal necrosis was lower than Atlantic, Norchip and Snowden. Deformed tubers occurred at levels less than Norchip and Snowden. Northstar is resistant to tuber late blight infection, moderately resistant to common scab, Verticillium wilt and Fusarium wilt, and moderately susceptible to foliar late blight. It is susceptible to early blight and shows clear tuber and foliar symptoms when infected with bacterial ring rot.

Resumen

‘Northstar’ (VO123-25) es un cultivar de papa de piel blanca, pulpa blanca que madura a media estación, adecuado para hojuelas de almacenamiento frío. Fue seleccionado de un cruzamiento entre ‘Niska’ y ND860-2 en el Centro de Investigación Agrícola Lethbridge and Agri-Food Canada. En pruebas a través del Oeste canadiense, los rendimientos comerciables de estación completa de Northstar fueron de 6% a 31% más altos que ‘Snowden’ y 11% mayores que ‘Norchip’. La gravedad específica de Northstar ha promediado 0.009 y 0.012 menos que Snowden y ‘Atlantic’, respectivamente. E1 color de hojuela fue superior que Norchip, Snowden y Atlantic. Northstar mostró un excelente potencial para hacer hojuelas de tubérculos directamente extraídos de almacenamiento de 6 C. Los tubérculos de Northstar son uniformes, ovales, lisos a ligeramente escamosos, con ojos superficiales. La incidencia de corazón vacío y necrosis interna fue menor que en Atlantic, Norchip y Snowden. Los tubérculos deformes se presentan a menores niveles que en Norchip y Snowden. Northstar es resistente a la infección de tizón tardío al tubérculo, moderadamente resistente a sarna común, marchitez por Verticillium y Fusarium y moderadamente susceptible a tizón tardío foliar. Es susceptible al tizón temprano y muestra claros síntomas al tubérculo y al follaje cuando se infecta con pudrición bacteriana en anillo.

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Correspondence to B. Bizimungu.

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Bizimungu, B., Lynch, D.R., Kawchuk, L.M. et al. Northstar: A high-yielding, white cold-storage chip** potato cultivar with attractive oval tubers resistant to late blight. Amer J of Potato Res 84, 437–445 (2007). https://doi.org/10.1007/BF02987880

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