. Energy News .

Factors in berry-splitting in blueberries examined
by Staff Writers
Washington DC (SPX) Jun 02, 2011

They found that "Premier" absorbs more water than "Tifblue," yet remains intact and experiences minimal splitting. According to Marshall, the studies show that splitting is a cultivar-specific problem.

U.S. Department of Agriculture (USDA) researchers and a university colleague have found several factors involved in blueberry splitting, a significant problem that can cause losses of $300 to $500 per acre.

Splitting and cracking occur in southern highbush and rabbiteye blueberries if they receive preharvest rainfall when fully ripe or approaching ripeness, according to scientists with USDA's Agricultural Research Service (ARS). ARS is USDA's principal intramural scientific research agency.

ARS horticulturist Donna Marshall, retired horticulturist James Spiers and geneticist Stephen Stringer at the ARS Thad Cochran Southern Horticultural Laboratory in Poplarville, Miss., and University of Southern Mississippi associate professor Kenneth Curry collaborated on the research studies published in HortScience.

In the first study, published in 2007, the researchers developed a laboratory method to model rain-related splitting in blueberries. Many blueberry breeders throughout the country are using this method to more vigorously screen cultivars and selections for splitting susceptibility.

The results from field and laboratory tests showed that the rabbiteye cultivar "Premier" has the lowest incidence of splitting, while widely grown cultivar "Tifblue" exhibited a high incidence of splitting.

Marshall and her colleagues also investigated the correlation between splitting susceptibility and fruit firmness. Laboratory and field tests proved that, in general, firmer fruit has a higher tendency to split. But one selection, named "MS614," exhibited extreme firmness and splitting resistance.

The results, published in 2008, suggest that breeders who select for firmness may inadvertently also be selecting for splitting. But the laboratory screening method Marshall and colleagues created has helped remedy this problem.

The most recent study, published in 2009, evaluated water-uptake thresholds in split-resistant "Premier" and split-susceptible "Tifblue" fruit at all stages of development. The researchers harvested and weighed the fruit, then soaked it in distilled water at room temperature for 24 hours.

They found that "Premier" absorbs more water than "Tifblue," yet remains intact and experiences minimal splitting. According to Marshall, the studies show that splitting is a cultivar-specific problem.

Read more about this and other blueberry research in the May/June 2011 issue of Agricultural Research magazine.

Related Links
United States Department of Agriculture - Research, Education and Economics
Farming Today - Suppliers and Technology

Get Our Free Newsletters Via Email
Buy Advertising Editorial Enquiries

. Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

High risk of Parkinson's disease for people exposed to pesticides near workplace
Los Angeles CA (SPX) Jun 01, 2011
In April 2009, researchers at UCLA announced they had discovered a link between Parkinson's disease and two chemicals commonly sprayed on crops to fight pests. That epidemiological study didn't examine farmers who constantly work with pesticides but people who simply lived near where farm fields were sprayed with the fungicide maneb and the herbicide paraquat. It found that the risk for Pa ... read more

NASA sees a 14-mile-wide eye and powerful Super Typhoon Songda

Foreign NGO says satellite images indicate war crimes in Sudan's Abyei

Satellite observations show potential to improve ash cloud forecasts

For Aquarius, Sampling Seas No 'Grain of Salt' Task

EU to launch Galileo satellites this fall

Galileo: Europe prepares for October launch

EU announces launch date for first Galileo satellites

Europe's first EGNOS airport to guide down giant Beluga aircraft

Australia's Kakadu wetlands 'under climate threat'

Thorny mission to preserve world's forests

Forest fragmentation threatens Europe, species: UN

Destruction of Brazil's Atlantic Forest falls 55%: study

Algae-Based Biofuels Represent a Trillion Dollar Potential Market Opportunity

Joint Venture Secures Financing for Renewable Diesel Facility

Endicott Biofuels and Holly Partner on Biorefinery

European Commission Funds Global Project to Produce Bioproducts From Algae

Warehouse Goes Solar with 1000 panels

PV installations to exceed 21 GW in 2011

US on Pace to Become World's Largest Solar Market

Cleaner Air Solutions to Install over 3MW of SolarEdge Systems in UK

GL Garrad Hassan releases update of WindFarmer 4.2

Australian study into wind turbine noise

Windpower 2011 highlights industry trends and job creation

Google backs wind energy in California desert

19 trapped in flooded China coal mines: Xinhua

13 dead in China mine accidents: state media

Massey Energy blamed for mine disaster

Targeted regeneration could be key to boosting coalfield communities

China crackdown recalls Tiananmen: rights groups

Restive China region orders mining crackdown

China vows to address Mongol grievances

China clamps down on Mongolian protests

Memory Foam Mattress Review
Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

The content herein, unless otherwise known to be public domain, are Copyright 1995-2011 - Space Media Network. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement