Navigation Links
New research expands genetic base of cultivated strawberry
Date:1/18/2011

EAST LANSING, MI Today's most common cultivated strawberry, the familiar Fragaria x vananassa (F. xananassa), is believed to have resulted from a chance hybridization of two wild strawberry species in Europe more than 250 years ago. This hybridization combined the unique characteristics of both species, including the larger, firmer fruit of F. chiloensis with the darker red, more aromatic fruit of F. virginiana. The fact that F. xananassa has a narrow germplasm base has breeding ramifications. The species tolerates inbreeding poorly, and its low genetic diversity leaves the strawberry susceptible to disease and abiotic and biotic stresses.

In an attempt to increase the genetic base of F. xananassa and introduce novel genetic diversity into the cultivated gene pool, James Hancock and colleagues from the Department of Horticulture at Michigan State University, the University of Minnesota, and the USDA-ARS in Oregon designed an experiment that crossed elite clones of the two wild species, then hybridized them to produce 26 reconstructed populations. A full report of the study appears in HortScience.

In the study, 78 individuals resulting from the cross of F. chiloensis and F. virginiana were evaluated for their seasonal flowering patterns, inflorescence number, inflorescence height, crown production, flower number, fruit size, yield, internal color, soluble solids, fruit firmness, and plant vigor. The scientists concluded that the reconstruction of F. xananassa by crossing elite genotypes of F. chiloensis and F. virginiana appears to be an effective strategy for strawberry improvement. They found that, although none of the examined FVC11 genotypes are of commercial quality, many have characteristics superior to their parents.

According to the study, there are still questions about whether intercrossing within the reconstructed populations will yield new cultivars. "Although the fruit size in the best FVC11 genotypes is far superior to any wild germplasm, it is still smaller than commercial size", Hancock noted, adding that the FVC11 population evaluated would be a "great tool" to breeders wishing to introduce novel genetic diversity into their breeding programs.

The team is currently expanding this population to increase the chances of acquiring genotypes with even more positive combinations of traits.


'/>"/>

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

Related biology news :

1. Scripps Research team creates new synthetic compound with HIV-fighting promise
2. Researchers unlock how progesterone increases breast cancer risk
3. Eurofins MWG Operon signs contract to supply DNA sequencing services to Research Councils
4. In scientific first, researchers visualize naturally occurring mRNA
5. Researchers report on the early development of anti-HIV neutralizing antibodies
6. Researchers learn why PSA levels reflect prostate cancer progression
7. Cattle health and welfare at the heart of K-State research
8. Scripps Research and Vanderbilt to launch joint institute
9. Adrenaline receptor frozen in action by VIB researchers
10. Researchers show how 1 gene becomes 2 (with different functions)
11. Sanofi-aventis enters into a research and development collaboration with UCSF
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/3/2016)... Calif. , Feb. 3, 2016 Vigilant ... Police Department in Missouri ... license plate reader (LPR) data from Vigilant Solutions. ... hit-and-run case in which the victim was walking out of a convenience ... parking space next to his vehicle, striking his vehicle ...
(Date:2/2/2016)... Feb. 2, 2016 Checkpoint Inhibitors for ... Market Are you interested in the future ... for checkpoint inhibitors. Visiongain,s report gives those predictions ... and national level. Avoid falling behind in ... opportunities and revenues those emerging cancer therapies can ...
(Date:2/1/2016)... 1, 2016 Rising sales of ... global touchfree intuitive gesture control market size ... sales of consumer electronics coupled with new technological advancements ... size through 2020   --> ... new technological advancements to drive global touchfree intuitive gesture ...
Breaking Biology News(10 mins):
(Date:2/8/2016)... Feb. 8, 2016  CytRx Corporation (NASDAQ: ... specializing in oncology, today announced that it has ... with Hercules Technology Growth Capital, Inc. and Hercules ... in financing. --> ... million of financing under the loan and security ...
(Date:2/8/2016)... Novan, Inc. today announced that Director Robert A. Ingram ... In addition, Robert Keegan has been appointed to the ... --> North Carolina . ... of $32.8 million of net proceeds in a private Mezzanine B ... the Research Triangle area of North Carolina . ...
(Date:2/8/2016)... 2016  BioElectronics Corporation (OTC Pink: BIEL), the ... that it is responding to a notice of ... and Exchange Commission posted on the agency website.  ... the Board of BioElectronics Corporation and the Edward ... The Fuqua School of Business, Duke University.   ...
(Date:2/8/2016)... ... February 08, 2016 , ... Bulk food product ... foods at various stages of the production process. Despite frequently inspecting loose product ... products post packaging such as sacks of dry powders. , Mettler-Toledo Product Inspection's ...
Breaking Biology Technology: