Monticello: A Mid-season Variety with Good Tuber Appearance and Chipping Potential from Mid- to Long-term Storage

American Journal of Potato Research, Mar/Apr 2004 by Porter, G A, Lambert, D H, Bushway, A A, Plaisted, R L, Et al

ABSTRACT

Monticello (NY102), a new medium-maturing, round-white chipping variety was released in 2003 by the University of Maine and Cornell University. It is primarily intended for use in the chipping industry, especially from mid- to long-term storage. Its ability to chip from relatively long-term storage, low storage weight loss, and relatively long tuber dormancy should be particularly valuable. Tubers have shown a good ability to recondition and regain good chip color after periods of stress in storage. Monticello's specific gravity typically averages only a few points lower than Atlantic, a variety that is widely used for out-of-field chipping in the eastern U.S. Chip color of Monticello has been very good from short-, mid-, and long-term storage. It has been grown successfully in commercial-scale tests in Maine since 1999 with combined seed and chipping production of more than 37 and 60 ha during 2001 and 2002, respectively. Research and commercial-scale trials in Maine have generally produced favorable yield and quality results relative to other storage chippers like Snowden. The tubers are bright and attractive with relatively few external defects. Tuber size tends to be fairly small and is ideal for chipping. Sensory panel tests have also shown that Monticello is good for boiling and baking. Although ideally suited for chipping, the fresh market may serve as a secondary market for this variety because of its typically good external appearance and cooking quality scores. Monticello has moderate to good common scab resistance and is resistant to golden nematode. It is moderately susceptible to blackspot bruise, powdery scab, and typical foliar diseases of potato. Although tubers can develop hollow heart and internal heat necrosis, Monticello is typically much less susceptible than Atlantic.

RESUMEN

La nueva variedad de papa para hojuelas Monticello (NY 102), de madurez media, redonda y blanca ha sido liberada en el 2003 por las Universidades de Maine y de Cornell para su uso en la industria de hojuelas, especialmente para almacenamiento del tubercule medio o prolongado. La habilidad del tuberculo de servir para hojuelas despues de un periodo prolongado de almacenaje, baja perdida de peso y periodo de latencia relativamente largo son particularmente valiosos. Los tuberculos han mostrado buena capacidad de recuperacion del color de hojuelas despues de ser reacondicionados y despues de periodos de estres en el almacen. La gravedad especifica promedio de Monticello esta a solo unos pocos puntos por debajo de Atlantic, variedad ampliamente utilizada para su proceso inmediato en hojuelas en el este de EUA. El color de hojuelas de Monticello fue muy bueno despues de almacenaje en periodos cortos, medianos o largos. Se ha cultivado con exito en pruebas a escala comercial en Maine desde 1999 con semilla combinada y produccion de hojuelas en mas de 37 y 60 hectareas durante 2001 y 2002 respectivamente. Las pruebas de investigacion y a escala comercial en Maine han dado como resultado rendimientos y calidad favorable en relacion con otras variedades usadas en la produccion de hojuelas como la variedad Snowden. Los tuberculos son brillantes y atractivos con relativamente pocos defectos externos. El tamano del tuberculo tiende a ser relativamente pequeno y es ideal para hojuelas. Las pruebas de panel sensorial han demostrado tambien que Monticello es bueno para coccion y horneado. Aunque idealmente satisfactorio para hojuelas, el mercado para el producto fresco puede ser como una opcion secundaria para esta variedad por su buena apariencia externa y calidad de coccion. Monticello tiene una moderada a buena resistencia a la sarna comun y es resistente al nematodo dorado. Es moderadamente resistente a la mancha negra, rona y enfermedades foliares tipicas de la papa. Aunque los tuberculos pueden desarrollar corazon vacio y necrosis interna, Monticello es tipicamente menos susceptible que Atlantic.

Accepted for publication 10 December 2003.

ADDITIONAL KEY WORDS: Solanum tuberosum, chip color, specific gravity, common scab, golden nematode.

INTRODUCTION

Monticello, jointly released by Cornell University and the University of Maine in 2003, was initially evaluated as K9-29 and then as NY102. This clone was derived from a Cornell University cross made in 1986 between Steuben (Plaisted et al. 1990) and Kanona (Plaisted et al. 1989). The pedigree for Monticello is provided in Figure 1. Parental material was chosen primarily to combine good chip quality, golden nematode resistance, and attractive tuber appearance. B4494-3 was a source of golden nematode resistance from the USDA Beltsville breeding program. Green Mountain and Delus were parents of 57G5-27. Peconic was selected for its resistance to golden nematode and good chipping quality (Peterson and Plaisted 1966). LNA-106, a parent of Peconic, includes Russet Rural and golden-nematode-resistant line 1392-7 in its pedigree. Line 1392-7 was generated from a Record x S. tuberosum subsp. andigena cross.