Researchers Are Testing Disease-Resistant Potato Breeding Lines

Agricultural Research Service (ARS) scientists are testing five new potato breeding lines with the hope of opening the door to new varieties that resist powdery scab and black dot diseases.

The fungi responsible for these diseases many times show up together in the same soil, going after the potato plant’s roots, tubers, or stems. According to ARS, outbreaks can cause yield losses of up to 25% and stop tubers from reaching the sizes needed by the industry. Of the two fungi, only black dot can be controlled with fungicides. Typically, multiple applications are needed, driving up production costs.

A more sustainable alternative is genetic resistance, according to geneticist Chuck Brown, with the ARS Vegetable and Forage Crops Production Research Laboratory in Prosser, WA. In studies conducted there since 2004, researchers screened an existing collection of wild and cultivated potatoes for sources of natural resistance to powdery scab and black dot in a local grower’s infested field.

The researchers efforts led to five advanced potato breeding lines that had been developed from a wild species from Mexico, Solanum hougasii, and a recent commercial release, Summit Russet. In three years of field trials in Washington State and Idaho, the potato breeding lines consistently showed fewer disease symptoms — root galling for powdery scab and sclerotia-infected stems for black dot — than other lines and varieties tested.

The research findings have been published in the journal Plant Disease. For more information, click here.

Source: USDA ARS
 

Leave a Reply

Featured Stories

All Vegetables Stories >All Fruits Stories >All Nuts Stories >All Citrus Stories >

The Latest

Apples & PearsInvasive Pest Found First Time In U.S. At Border Crossi…
October 20, 2014
Moth known to feed on apples, apple buds, leaves, and shoots, is found in a container full of pump valves originating in China. Read More
More Vegetables6 Savory Tomato And Pepper Varieties For Florida Grower…
October 20, 2014
Leading vegetable seed companies highlight a half dozen high-performance selections for producers in the Sunshine State. Read More
CitrusGrowers Need To Take The Ball And Run — Now! [Opi…
October 18, 2014
Help yourself, your farm, and fellow colleagues by becoming more involved in your industry. Read More
CitrusLegendary Florida Citrus Grower And Advocate Passes
October 17, 2014
Joe L. Davis Sr. will be remembered for his straight talk and sage advice. Read More
GrapesNew American Viticultural Area In Northern California E…
October 17, 2014
“Eagle Peak Mendocino County” lies entirely within the North Coast viticultural area. Read More
GrapesMapping Grape Crown Gall Tumor Disease
October 17, 2014
Scientists are close to cracking the disease’s genetic code, a major boon to vineyard protection. Read More
NutsAlmond Growers To Promote Bee Health
October 16, 2014
Almond Board of California announces comprehensive Best Management Practices. Read More
Cucurbits6 Juicy Watermelon Selections For The Sunshine State
October 16, 2014
Leading vegetable seed companies highlight a half dozen high-performance varieties for Florida producers. Read More
CitrusDiversification Is King For Small Farm’s Success
October 16, 2014
Being flexible and adapting to the times critical for Central Florida's Vo-LaSalle Farms. Read More
CitrusAsian Citrus Psyllid Moves Into Northern California
October 15, 2014
First detections made of damaging insect in Santa Clara and San Joaquin counties. Read More
Farm ManagementVidalia Onion Committee Reaches Younger Audience with D…
October 15, 2014
“V is for Vidalia” campaign focused on social and digital media outreach. Read More
VegetablesSakata Seed America To Debut “Tasty 10 By Sakata Coll…
October 15, 2014
The collection includes a new variety and will be launched at the PMA Fresh Summit Oct 17-19. Read More
Insect ControlBagrada Bug Continues To Spread In California’s Brass…
October 15, 2014
The pest is expected to be a problem through December. Read More
Vegetables8 Blazing Hot Pepper Varieties [Slideshow]
October 15, 2014
Check out these 8 hot pepper varieties from the nation’s leading seed breeders and distributors. Read More
NutsKeep In Mind Availability Of Soil Fumigants
October 15, 2014
Almond growers must be aware of restrictions pertaining to soil fumigants prior to replanting. Read More
Food SafetyCalifornia Leafy Greens Marketing Agreement Revises Web…
October 15, 2014
The California Leafy Greens Marketing Agreement's revised website provides food safety news and resources. Read More
CitrusScientists Uproot Common “Superweed” Myths
October 15, 2014
A new fact sheet is available that explores the truth behind two fallacies.   Read More
CitrusUF/IFAS Joins In On Specialty Crop Block Grant Bonanza
October 15, 2014
Researchers partnering with FDACS and USDA on 24 separate projects to strengthen the produce market sector. Read More