Technical Report

Klamath Basin Potato Variety Development Summary : 2012

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  • Since its inception in 1985, the Tri‐State variety development program has primarily focused on the development of processing and dual‐purpose (process and fresh) russets. Recent breeding efforts have focused more on improving genetic resistance to various pests and diseases as a means of lowering production costs. Although the development of russet varieties remains the primary focus, recent efforts have included red‐skinned and specialty‐type selections. Many of these selections offer unique skin and/or flesh color combinations along with enhanced nutritional qualities including elevated antioxidant and Vitamin C content. In total, more than 30 new varieties have been released by the Tri‐State variety development program since 1985. More recently Klamath Basin growers have identified the need for chipping potatoes suitable for export markets. Annual funding from the Oregon Potato Commission has been used to identify acceptable chipping varieties using advanced selections and recently released varieties from the Tri‐State, Southwest, North‐central, and Eastern breeding programs. Screening for resistance to various species of nematodes and related diseases is being accomplished at several locations. The Klamath Basin Research and Extension Center (KBREC) routinely screens selections for resistance to root‐knot nematode (Meloidogyne chitwoodi and Meloidogyne hapla) and corky ringspot disease (CRS) resulting from infection of Tobacco rattle virus which is vectored by stubby‐root (Paratrichodorus spp.) nematodes. Other cooperating sites within the Tri‐State area also work on resistant screening and other production limitations most suited to their respective location. The overall objective is that future releases will offer genetic resistance to many economically important pests and diseases which will help reduce production inputs as these costs continue to rise. The Klamath Basin Research and Extension Center (KBREC) also serves as an initial field screening location for all first‐generation selections of russet, specialty, and chipping clones (single‐hills) in Oregon. Second‐year evaluations of are conducted in Hermiston, Ontario, and Klamath Falls. Breeding progeny are supplied by programs at the USDA Agricultural Research Service (ARS) facility in Prosser, Washington, and Aberdeen, Idaho, as well as, Oregon State University (OSU), Colorado State University, and North Dakota State University. The purpose of this summary booklet is to report the results of our variety trial efforts. In 2012, KBREC participated in the following research trials: Russet Preliminary Yield 1 and 2 (PYT‐1 and PYT‐2), Statewide Russet, Tri‐state Russet, Western Regional Russet, Red/Specialty PYT‐ 1, Statewide Specialty, Tri‐state Specialty, Western Regional Red/Specialty, and a modified Western Regional Chip Trial. A brief summary of weather during the growing season, insect trapping results and single‐hill selections are also included in this research summary.
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