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:10/4/2017)... , Oct. 4, 2017  GCE Solutions, a global clinical research ... and document anonymization solution on October 4, 2017. Shadow is designed ... to comply with policy 0070 of the European Medicines Agency (EMA) ... ... Solutions ...
(Date:6/23/2017)... N.Y. , June 23, 2017  IBM (NYSE: ... dairy research, today announced a new collaboration using next-generation ... chances that the global milk supply is impacted by ... Cornell University has become the newest academic institution to ... a food safety initiative that includes IBM Research, Mars, ...
(Date:5/6/2017)... 2017 RAM Group , Singaporean ... breakthrough in biometric authentication based on a ... to perform biometric authentication. These new sensors are based ... by Ram Group and its partners. This sensor will ... chains and security. Ram Group is a next ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back ... 8th June 2018 in San Francisco, CA. The Summit brings together current and former ... CEOs, board directors and government officials from around the world to address key issues ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
(Date:10/10/2017)... ... October 10, 2017 , ... Dr. Bob Harman, founder and CEO ... Diego Rotary Club. The event entitled “Stem Cells and Their Regenerative ... attendees. Dr. Harman, DVM, MPVM was joined by two human doctors: Peter B. ...
(Date:10/9/2017)... 2017  BioTech Holdings announced today identification and ... ProCell stem cell therapy prevents limb loss in ... demonstrated that treatment with ProCell resulted in more ... compared to standard bone marrow stem cell administration.  ... reduction of therapeutic effect.  ...
Breaking Biology Technology: