Featured Research

from universities, journals, and other organizations

Scientists clarify origins of potato germplasm Neo-Tuberosum

Date:
June 2, 2010
Source:
USDA/Agricultural Research Service
Summary:
A recent study conducted by scientists and cooperators shows the potato germplasm Neo-Tuberosum, used by potato breeders to develop new cultivars, has origins that can be traced to Chile, not to the Andes as previously believed.

In a greenhouse at the Vegetable Crops Research Unit in Madison, Wisconsin, botanist David Spooner works to identify the origins (or species) of potato germplasm known as "Neo-Tuberosum."
Credit: Photo by Stephen Ausmus

A recent study conducted by scientists with the Agricultural Research Service (ARS) and cooperators shows the potato germplasm Neo-Tuberosum, used by potato breeders to develop new cultivars, has origins that can be traced to Chile, not to the Andes as previously believed.

Related Articles


Native "landrace" potatoes come from two areas: lowland central Chile and the Andes mountains from Venezuela south to northern Argentina. These geographical groups of potato, Solanum tuberosum, differ mainly in day-length adaptation -- the amount of daylight needed for them to tuberize or begin to develop. The Andean potato is adapted to short-day conditions widespread in the mountainous, tropical region from which it came. The Chilean potato, on the other hand, evolved under long-day conditions, making it pre-adapted to grow in other long-day-length environments like Europe and North America.

The Andean potato contains many desirable traits, such as virus X and Y resistance, earlier tuberization and greater yield. In the 1960s, an English potato breeder sought to take the Andean potato and adapt it for use in long-day-length regions. This new potato germplasm was named "Neo-Tuberosum" and is widely used by potato breeders to develop new potato varieties.

ARS botanist David Spooner, with the agency's Vegetable Crop Research Unit in Madison, Wis., and his colleagues at the International Potato Center in Lima, Peru, originally sought to measure how much the genetic base of modern potato varieties and breeders' lines had broadened with respect to the Andean and Chilean landraces.

Spooner and his collaborators unexpectedly found Neo-Tuberosum is not a product of strict inter-Andean breeding as previously believed. Instead, it's a descendant of the Chilean potato.

According to Spooner, the study, which was published in Theoretical and Applied Genetics, will change the way this potato species is viewed by scientists -- particularly phylogeneticists, who study the evolutionary history of an organism. The discovery will also help researchers gain knowledge of potato classification and identification and will encourage breeders to reexamine the value of the material from the Andean potato.

Read more about this research in the May/June 2010 issue of Agricultural Research magazine, available online at: http://www.ars.usda.gov/is/AR/archive/may10/germplasm0510.htm.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. The original article was written by Stephanie Yao. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Scientists clarify origins of potato germplasm Neo-Tuberosum." ScienceDaily. ScienceDaily, 2 June 2010. <www.sciencedaily.com/releases/2010/06/100602121208.htm>.
USDA/Agricultural Research Service. (2010, June 2). Scientists clarify origins of potato germplasm Neo-Tuberosum. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2010/06/100602121208.htm
USDA/Agricultural Research Service. "Scientists clarify origins of potato germplasm Neo-Tuberosum." ScienceDaily. www.sciencedaily.com/releases/2010/06/100602121208.htm (accessed October 25, 2014).

Share This



More Plants & Animals News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Black Bear Cub Goes Sunday Shopping

Black Bear Cub Goes Sunday Shopping

Reuters - Light News Video Online (Oct. 23, 2014) Price check on honey? Bear cub startles Oregon drugstore shoppers. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins