Navigation Links
Grape shapes
Date:2/17/2009

FAYETTEVILLE, ARRound, oblong, and in-between: the shapes of the fruits we eat are not always coincidental or, for that matter, thanks to nature. Before fruit arrives in local groceries, a lot of time and effort may have gone into creating the varieties found in the produce section.

In the mid-1960s, Dr. James N. Moore of the University of Arkansas began a grape breeding program, working toward developing varieties with elongated shapes. Now, 40 years later, Dr. John R. Clark continues this effort. One of these unique-shaped developments has been researched further, first to characterize the shape variation, with subsequent work to find genetic markers that could help breeders produce elongated grapes without waiting years to see the actual fruit on the vine.

Classifying fruit as elongated or other shapes can be challenging, as visual observations can be highly subjective and ratings often variable among observers.

Recently, a digital method for analyzing shapes has been used for tomatoes, but this method requires each fruit to be cut in half and scanned to take the measurements, making the fruit unusable for additional studies or for eating.

Another digital analysis method, called SigmaScan, is in use at the University of Arkansas' turfgrass science program. SigmaScan selects colors within a given range of a photograph to analyze turf quality mechanically, eliminating human error.

The university's fruit breeding program borrowed this technology for a study of grape shapes led by Clark and graduate student Andrew P. Wycislo. The study, published in the American Society for Horticultural Science journal HortScience, began with digital photos of grapes developed specifically for the project. The seedlings exhibited wide variation of shapefrom round to very elongated. Using a special application of the SigmaScan technology that measures the area of the grape by differentiating it from the background color, calculations were made about the shape of each grape. Every grape was also manually rated based on elongation.

"Visual inspection supported the SigmaScan analysis," reported the researchers.

The grapes used for the study were frozen at the time of harvest and did not need to be thawed or cut to be photographed. Ten grapes were photographed at one time, but more grapes could be shot and studied in a single photo in the future to further the speed of study. In this way, SigmaScan improves efficiency, and because the fruit is still intact, it can also be used for additional studies or consumption.

This method has potential for future breeders by helping them to select grapes based on degree of elongation, and can also be applied to studies of other fruits. Although none of the elongated grapes have been released for public use as yet, it is hoped that in the future these new and unique grapes will be an addition to the expanding fresh fruit profile for American consumers.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert  

Related biology news :

1. Grape-seed extract kills laboratory leukemia cells, proving value of natural compounds
2. Grapes may aid a bunch of heart risk factors, animal study finds
3. Mounting evidence shows health benefits of grape polyphenols
4. Herbicide-resistant grape could revitalize Midwest wine industry
5. Characterization of grapevine transposons furthers understanding of in vino variety
6. Fresh from the grapevine to the table
7. Study results: new recommendations for grape growers
8. New study shows Concord grape juice has a heart-healthy effect not yet reported with red wine
9. New process makes nanofibers in complex shapes and unlimited lengths
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Grape shapes
(Date:2/2/2017)... , Feb. 2, 2017  EyeLock LLC, a market ... new white paper " What You Should Know About ... of ensuring user authenticity is a growing concern. In ... of users. However, traditional authentication schemes such as username/password ... Biometric authentication offers an elegant solution to the ...
(Date:1/30/2017)... , Jan. 30, 2017   Invitae Corporation ... fastest growing genetic information companies, today announced that it ... results and provide 2017 guidance on Monday, February 13, ... call that day at 4:45 p.m. Eastern / 1:45 ... management team will briefly review financial results, guidance, and ...
(Date:1/24/2017)... , Jan. 24, 2017 Biopharm ... of the laboratory use of nuclear magnetic resonance ... experienced end-users and profiled current practices, developments, trends ... as well as growth and opportunities. These areas ... suppliers, NMR instruments, needs and innovation requirements, hyphenated ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... (PRWEB) , ... February 24, 2017 , ... ... (TDR) procedures can be safely completed in an ambulatory surgery center (ASC) with ... (ACDF) procedures and previous two-year TDR studies. , Jake Lubinski, president of ...
(Date:2/24/2017)... , Feb. 24, 2017 Symic Bio, a ... a new category of therapeutics, announced today the completion ... in peripheral artery disease. The trial will evaluate the ... therapeutic, in the reduction of restenosis following angioplasty. ... development milestone for SB-030," said Nathan Bachtell , ...
(Date:2/24/2017)... Corporation (NASDAQ: VWR), the leading global independent provider of product ... its financial results for the fourth quarter and full year ... 4Q16 record quarterly net sales of $1.13 billion, up ... 4Q16 EMEA-APAC segment net sales increased ... net sales increased 2.5%, or down 0.9% on an organic ...
(Date:2/23/2017)... - The Fight Against Cancer Innovation Trust (FACIT) and ... to report that Fusion Pharmaceuticals Inc. (Fusion) has closed ... Innovation – JJDC, Inc. (JJDC) as the lead investor. ... Partners, and Genesys Capital, as well as founding investor ... ...
Breaking Biology Technology: