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Western russet: A new potato variety with excellent fresh market and frozen-fried processing quality and field resistance to common scab and PVYo

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Abstract

Western Russet, designated experimentally as A7961-1, and resulting from the cross A68113-4 x Bel-Rus, was released in 2004 by the USDA/ARS and the agricultural experiment stations of Idaho, Oregon, and Washington. The foliage of Western Russet is spreading, with medium-sized olive-green leaves and abundant white flowers. The tubers are tan, with medium russet skin, oblong shape, a slightly prominent eyebrow, white flesh, and distinctly visible pith. Western Russet was compared with Russet Burbank in trials across the Pacific Northwest for yield, quality, and disease response. In general, Western Russet produced lower total yields than Russet Burbank, but on average and depending on location, similar U.S. No. 1 yields. When observed for defect problems, Western Russet exhibited resistance to second growth, growth cracks, shatter bruise, stem-end discoloration, and heat necrosis, moderate resistance to hollow heart, and moderate susceptibility to blackspot bruise. In product quality tests, Western Russet was rated similar to Russet Burbank for french fry and dehydrated potato flake quality and slightly inferior for baked potato quality. In replicated evaluations, Western Russet was found to have good field resistance to common scab and PVYo, and moderate resistance to verticillium wilt and tuber net necrosis caused by PLRV. It demonstrated susceptibility to late blight, foliar PLRV, dry rot, soft rot, and tuber early blight. Biochemical analysis of Western Russet tubers showed markedly higher vitamin C content than those of Russet Burbank. Tuber glycoalkaloid concentration in tubers produced in a 1988 trial was 1.0 mg 100 g−1.

Resumen

En el año 2004 USDA/ARS y las Estaciones Experimentales Agrícolas de Idaho, Oregon y Washington liberaron el cultivar Western Russet, designado experimentalmente A7961-1, resultante del cruzamiento de A68113-4 x BelRus. El follaje de Western Russet es extendido, con hojas de tamaño mediano de color verde olivo y abundantes flores blancas. Los tubérculos son bronceados de piel casi rosada, oblongos, con ojos ligeramente prominentes, pulpa blanca y médula claramente visible. Se hicieron pruebas comparativas de Western Russet con Russet Burbank a lo largo del Pacífico noroccidental para determinar rendimiento, calidad y respuesta a enfermedades. En general, Western Russet produjo rendimientos totales menores que Russet Burbank, pero en promedio y dependiendo de la localidad, rendimientos similares de US No 1. Cuando se hicieron observaciones sobre defectos, Western Russet mostró resistencia a crecimiento secundario, rajaduras de crecimiento, magulladuras por golpe, decoloración de la base y necrosis por calor, resistencia moderada a la mancha negra. En pruebas sobre calidad del producto, se consideró a Western Russet similar a Russet Burbank para papa frita y hojuelas de papa deshidratada y ligeramente inferior en calidad para horneado. En repetidas evaluaciones se encontró que Western Russet tiene una buena resistencia de campo a la sarna común y al PVYo, resistencia moderada a marchitez por Verticillium y a necrosis en red del tubérculo causado por PLRV. Demostró susceptibilidad al tizón tardío, PLRV foliar, pudrición seca y tizón temprano del tubérculo. El análisis bioquímico de los tubérculos de Western Russet mostró marcadamente un mayor contenido de vitamina C que Russet Burbank. La concentración de glicoalcaloides en el tubérculo en una prueba en 1988 fue de 1.0 mg 100 g−1.

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Abbreviations

RHSCC:

Royal Horticulture Society Color Chart

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Correspondence to S. L. Love.

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Love, S.L., Novy, R.G., Whitworth, J. et al. Western russet: A new potato variety with excellent fresh market and frozen-fried processing quality and field resistance to common scab and PVYo . Am. J. Pot Res 83, 161–169 (2006). https://doi.org/10.1007/BF02872151

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