Small scale agricultural operations use a large number of sweet potato varieties in their planting. These varieties are steadily being lost due to weevils, sweet potato virus disease and environmental factors.
In an effort to identify, collect, evaluate, and mitigate the loss of important types, a study was conducted by the Sweet Potato Program of the National Crops Resources Research Institute in Namulaong, Uganda.
Initially, 1303 different genotypes were collected from 21 districts across Uganda. The collection was then planted at the Institute and harvested 90 to 100 days later. The sweet potatoes were placed into morphologically distinct groups after being evaluated for yield, dry matter content, and pest and disease resistance.
In the end, 946 distinct varieties were identified. The plethora of sweet potato genotypes is incredibly important for breeding. The thorough characterization of each sweet potato accession, or group type, will help eliminate duplicate breeding. Additionally, the research can be used to breed different types to possess certain desired traits. For instance, a sweet potato could be developed to be able to resist a particular pest or disease, or to thrive in a harsh environment.
According to the study’s author, Robert O. M. Mwanga, these discoveries are just the beginning of much more intense research.
“Further evaluation of the genotypes at phenotypic and molecular levels is needed to efficiently select genotypes that combine a number of useful traits for use as parents in hybridization schemes to produce improved cultivars for Uganda and Sub-Saharan Africa,” he says.
Moreover, the genotypes need to be duplicated at the International Potato Center in Lima, Peru and in other regional offices to conserve the distinct accessions.
Mwanga hopes that high yielding, pest and disease resistant, and nutritious varieties will be released for farmers in Uganda, and all over Sub-Saharan Africa.
The study was funded by a grant from the McKnight Foundation and the full study can be found in the November – December 2010 issue of Crop Science.
The full article is available for no charge for 30 days following the date of this summary. View the abstract at www.crops.org/publications/cs/abstracts/50/6/2364.
Crop Science is the flagship journal of the Crop Science Society of America. Original research is peer-reviewed and published in this highly cited journal. It also contains invited review and interpretation articles and perspectives that offer insight and commentary on recent advances in crop science. For more information, visit www.crops.org/publications/cs
The Crop Science Society of America (CSSA), founded in 1955, is an international scientific society comprised of 6,000+ members with its headquarters in Madison, WI. Members advance the discipline of crop science by acquiring and disseminating information about crop breeding and genetics; crop physiology; crop ecology, management, and quality; seed physiology, production, and technology; turfgrass science; forage and grazinglands; genomics, molecular genetics, and biotechnology; and biomedical and enhanced plants.
CSSA fosters the transfer of knowledge through an array of programs and services, including publications, meetings, career services, and science policy initiatives. For more information, visit www.crops.org
Sara Uttech | Newswise Science News
Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli
26.04.2017 | University of the Basque Country
New data unearths pesticide peril in beehives
21.04.2017 | Cornell University
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
26.04.2017 | Materials Sciences
26.04.2017 | Agricultural and Forestry Science
26.04.2017 | Physics and Astronomy