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Alta Crown: A New Russet Potato Cultivar with Resistance to Common Scab and A Low Incidence of Tubers Deformities

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Abstract

Alta Crown (CV92028-1) is a new russet potato cultivar with resistance to common scab and a low incidence of tuber deformities. It was selected at the Lethbridge Research Centre of Agriculture and Agri-Food Canada, from a cross made at Colorado State University, San Luis Valley Research Center between breeding clones AC83172-1RU and C086030-1RU. Alta Crown has semi-erect, short, and compact vines. The cultivar has uniform, oblong to long, medium to large tubers with a medium to dark russet skin, cream- colored flesh and shallow eyes. In trials across western Canada and Ontario, Alta Crown produced similar or lower total yields than did Russet Burbank and Shepody, but a higher percentage of marketable tuber yield at maincrop harvest, and at early harvest. The average weight of marketable tubers was superior to that of Russet Burbank at all sites, and to that of Shepody at some sites. Alta Crown exhibited resistance to tuber deformities, hollow heart and internal necrosis defects. Specific gravity of Alta Crown in western Canadian regional trials was similar to that of Shepody and Russet Burbank. Fry colour was also similar to Russet Burbank and Shepody in product quality evaluations. Alta Crown was identified as having resistance to common scab and was moderately resistant to late blight tuber rot and foliar early blight, but was susceptible to foliar late blight. It shows moderate foliar and tuber symptoms when infected with bacterial ring rot. A post-harvest laboratory testing is recommended to complement visual inspection.

Resumen

Alta Crown (CV92028-1) es una nueva variedad de papa tipo russet con resistencia a la roña común y con baja incidencia de deformaciones del tubérculo. Se seleccionó en el Centro de Investigación en Agricultura y de Agroalimentos de Canadá, de una cruza hecha en la Universidad Estatal de Colorado, en el Centro de Investigación del Valle de San Luis, entre los clones AC83172-1RU y C086030-1RU. Alta Crown tiene tallos semi-erectos, cortos y compactos. La variedad tiene tubérculos uniformes, de oblongos a largos, de tamaño de medio a grande, con piel rugosa de intermedia a oscura, pulpa color crema y ojos superficiales. En ensayos a lo largo del oeste de Canadá y Ontario, Alta Crown produjo rendimientos similares o más bajos que Russet Burbank y Shepody, pero con un porcentaje mayor de rendimiento de tubérculo comercial en la cosecha de cultivo principal y en cosecha temprana. El peso promedio de tubérculos comerciales fue superior al de Russet Burbank en todos los sitios, y al de Shepody en algunos. Alta Crown exhibió resistencia a deformaciones de tubérculo, corazón hueco, y a defectos de necrosis interna. La gravedad específica de Alta Crown en los ensayos regionales del oeste de Canadá fue similar a la de Shepody y de Russet Burbank. El color del freído también fue similar al de Russet Burbank y Shepody en las evaluaciones de calidad del producto. Alta Crown se identificó como con resistencia a la roña común y fue moderadamente resistente a la pudrición del tubérculo por tizón tardío y al tizón temprano foliar, pero fue susceptible al tizón tardío en las hojas. Muestra síntomas moderados en hoja y tubérculo cuando se infecta con la pudrición anular bacteriana. Se recomienda una prueba de laboratorio en postcosecha para complementar la inspección visual.

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Acknowledgments

The following contributions are gratefully acknowledged: Mr. Erich Dyck, Ms. Evelyn Lyon, Ms. Susan Smienk, Mr. Frank Kulcsar and Mr. Ron Gregus for technical assistance; Ms. Vanessa Currie (University of Guelph) for Ontario data; the Western Potato Consortium and the Matching Investment Initiative of Agriculture and Agri-Food Canada for the financial support to the breeding program at the Lethbridge Research Centre, and the Alberta Agriculture and Rural Development for the trials at Brooks and Edmonton sites. We also thank Dr. D. Lambert for conducting the bacterial ring rots evaluations in Maine. LRC Contribution No.: 387-08051.

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Correspondence to B. Bizimungu.

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D. R. Lynch retired.

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Bizimungu, B., Holm, D.G., Kawchuk, L.M. et al. Alta Crown: A New Russet Potato Cultivar with Resistance to Common Scab and A Low Incidence of Tubers Deformities. Am. J. Pot Res 88, 72–81 (2011). https://doi.org/10.1007/s12230-010-9165-0

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  • DOI: https://doi.org/10.1007/s12230-010-9165-0

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