Wild Potato Germplasm Fights Late Blight

Agricultural Research Scientists (ARS) identified a wild potato germplasm that offers resistance to some major potato diseases. Geneticists Dennis Halterman and Shelley Jansky pinpointed the resistant wild potato species in studies at the ARS Vegetable Crops Research Unit in Madison, WI.

Halterman has identified a wild potato species called Solanum verrucosum that contains a gene with resistance to late blight. The wild species can be crossed with cultivated potatoes, and efforts are under way to move the late-blight resistance gene into the cultivated potato gene pool.

But the scientists aren’t stopping there. They are using S. verrucosum to create a potato that’s resistant to both late blight and early blight.To create the multi-disease-resistant cultivar, the scientists crossed S. verrucosum with another wild potato species that is resistant to early blight, and then crossed the wild potato hybrid with the cultivated potato. 

Halterman and Jansky are also looking for resistance to Verticillium wilt, another fungal disease that can linger in the soil for up to 10 years. Halterman developed a molecular marker to screen potato germplasm for resistance against this disease, saving the scientists time and effort. They found resistance in the wild potato species S. chacoense and crossed it with the cultivated potato. 

The scientists’ studies have been published in Physiological and Molecular Plant Pathology, Molecular Breeding and the American Journal of Potato Research.

For the full story, go to www.ars.usda.gov/is/pr/2010/100616.htm.

Source: USDA-ARS

 

Leave a Reply

2 comments on “Wild Potato Germplasm Fights Late Blight

  1. This is another reason we need to be careful about our GMO efforts and to preserve native/”natural” varieties. New isn’t always better and we have much to learn about what has come to be and exist before all the cultivation and crossing came into play.

  2. This is another reason we need to be careful about our GMO efforts and to preserve native/”natural” varieties. New isn’t always better and we have much to learn about what has come to be and exist before all the cultivation and crossing came into play.

Featured Stories

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

The Latest

Vegetables
VegetablesAnnual Santa Maria Vegetable Meeting
August 20, 2014
University of California Cooperative Extension will host annual vegetable meeting focusing on nutrient management, plant growth, weed management, and more. Read More
Leafy Vegetables
Leafy VegetablesTanimura & Antle Introduces New Lettuce Variety 
August 20, 2014
The California grower now offers George T’s Colossal Romaine Heart, in honor of the company's founder, George Tanimura. Read More
Labor
CitrusBorder Crisis Not Helping Farmers
August 19, 2014
As thousands cross into the U.S. seeking refuge, calls for ag labor reform are lost in the uproar. Read More
Cucurbits
Cucurbits24 Sweet Watermelon Varieties [Slideshow]
August 19, 2014
Browse the slideshow below for information on 24 watermelon varieties from the nation’s leading seed breeders and distributors. Read More
Fruits
FruitsHandheld Produce Quality Meter Debuts At 2014 Internati…
August 19, 2014
Researchers to present data measuring dry matter, color, and sugar content of cherries and other product pre- and postharvest. Read More
Grapes
GrapesNew York State Assists Grape Growers Hit By Harsh Winte…
August 19, 2014
State to open winegrape market to grapes grown outside the state. Read More
Marketing
FruitsEuropean Fruit And Vegetable Growers Hit By Russian Ban…
August 19, 2014
Angry at European Union/United States sanctions over Ukraine, Russia has banned many food imports. Read More
Apple Grower of the Year
Apple Grower of the YearGet The Latest News On The Nation’s Apple Crop
August 19, 2014
American and Western Fruit Grower editors will be tweeting in real time this week from the Apple Crop Outlook & Marketing Conference. Read More
Oranges
OrangesSour Forecast For 2014-2015 Florida Orange Crop
August 18, 2014
Paltry prediction signals lowest output in 50 years. Read More
Crop Protection
Crop ProtectionBioConsortia Inc. Bolsters Executive Team
August 18, 2014
Industry veterans Christina Huben and Dr. Susan Turner bring experience to plant biotechnology firm. Read More
Stone Fruit
Stone Fruit‘Ladderless’ Peach, Nectarine Orchards Explored
August 15, 2014
University of California researchers explore the concept of so-called pedestrian orchards. Read More
Farm Management
CitrusU.S. Sugar Buying South Florida Sugar Cane And Vegetabl…
August 15, 2014
Purported deal worth $100 million to purchase farmland and assets of Knight Management Inc. Read More
Farm Management
CitrusFlorida’s Future Farming Leaders Dig Up Knowledge…
August 15, 2014
Class 3 of FFVA's Emerging Leader Development Program learn a lot from road trip to California's Salinas Valley. Read More
Irrigation
CitrusWater Bond Will Appear On California Ballot
August 14, 2014
Voters will decide if thirsty state will spend $7.5 billion, including $2.7 billion for storage. Read More
Berries
BerriesFamiliar Face Settles In As New Florida Strawberry Asso…
August 14, 2014
Kenneth Parker’s deep roots in the community and knowledge of production challenges make a good combination for executive director role. Read More
Insect & Disease Update
Insect & Disease UpdateIs There Light At The End Of The Tunnel For Florida Cit…
August 14, 2014
Time is of the essence in the race to beat greening. Read More
Insect & Disease Update
Insect & Disease UpdateCoca-Cola Shares Additional $1.5 Million To Fight Citru…
August 14, 2014
Grant to help UF/IFAS researchers work toward a solution for devastating disease. Read More
Farm Management
CitrusU.S. Fall Weather Outlook Foresees Wild Ride
August 14, 2014
From continued drought in the West, to a possible early Polar Vortex visit in the East, forecasters are predicting an active autumn. Read More