New Disease-Resistant Edible Dry Pea Developed for Northwest US

New Disease-Resistant Edible Dry Pea Developed for Northwest US

Sept. 23, 2015

New Dry Pea Variety Hampton
Figure 1. Hampton, a new edible dry pea variety developed by ARS, resists some of the crop's most costly scourges, including a variety of viruses and fungi. (Photo by Rebecca Mcgee, courtesy of USDA ARS)

U.S. Department of Agriculture (USDA) scientists in Pullman, Washington, have developed Hampton, a new edible dry pea variety that resists multiple pathogens of this legume crop.

Two pathogens of particular concern are the pea enation mosaic virus (PEMV) and bean leaf roll virus (BLRV). In severe cases, both of these aphid-borne pathogens can inflict crop losses of 80 to 90%, according to Rebecca McGee, a plant geneticist with USDA's Agricultural Research Service (ARS).

Besides seed-yield losses, outbreaks of PEMV and BLRV also deprive growers of an important grain-rotation crop that can cut down on synthetic fertilizer use—the result of the legume's symbiotic relationship with nitrogen-fixing root bacteria, adds McGee, at the ARS's Grain Legume Genetics and Physiology Research Unit, Pullman. Fortunately, Hampton resists both of these viral threats as well as a variety of fungal pathogens that cause Fusarium wilt and powdery mildew. Hampton owes its broad disease resistance, high yield and other valued agronomic traits to a top-performing population of sixth-generation offspring plants derived from crossing two ARS pea breeding lines, PS810090 and PS510718.

McGee developed, evaluated and released Hampton as part of a pea, lentil and chickpea germplasm-improvement program at Pullman together with collaborators from North Dakota State University, Washington State University, Montana State University and the University of Idaho.

During yield trials from 2008-2013 at 40 sites in Washington State, North Dakota, Idaho and Montana, Hampton produced seed yields that exceeded those of the commercial cultivars Aragorn, Ariel and Banner by 12, 13 and 5%, respectively. Hampton is intended for production in the Pacific Northwest and Northern Plains, but is particularly suited to the Palouse, a hilly, fertile region encompassing parts of southeastern Washington State, northeast Oregon and northwest Idaho.

The Washington State Crop Improvement Association is handling inquiries for certified seed of Hampton, which should be available to growers in spring 2016.

ARS is USDA's chief intramural scientific research agency.

Learn more about Hampton in Hardy New Pea Now Developed in the September issue of AgResearch.

Jan Suszkiw
USDA Agricultural Research News Release

Online Master of Science in Agronomy

With a focus on industry applications and research, the online program is designed with maximum flexibility for today's working professionals.

A field of corn.