Navigation Links
Identifying mega-targets for high-yield plant breeding
Date:2/17/2009

Madison, WI , February 2, 2009 -- Promoting genetic diversity in crops is traditional practice for agriculture professionals, and with today's technology, scientists are able to develop breeding programs with great care for the security of crops. This is particularly important due to the numerous risks the world's food supplies face with the changing climate. Genetic diversity in a breeding program is essential as an insurance against unforeseeable changes in the environment and to maintain genetic progress.

The incorporation of diversity into a breeding program, however, should be planned carefully. Without taking great care in the incorporation of diversity into a breeding program, poorly adapted genotypes may prevent genetic progress and may therefore have a short-term negative impact on the breeding program. On the other hand, the use of elite genotypes adapted to the local conditions could increase diversity while maintaining genetic gain.

Adapted genotypes can easily be obtained for any environment if the genotypes are evaluated in the target environment. However, it is not possible for a breeding program to evaluate every single candidate genotype. Predicting the performance of a genotype is difficult due to the multiple breeding objectives and the many environmental conditions of genotype evaluation. Therefore, finding adapted elite genotypes is challenging if the genotypes are not evaluated in the targeted environment.

A recent study conducted at Iowa State University proposed data-driven methods to group breeding programs likely to be compatible for germplasm exchange. Specifically, the researchers characterized the genetic diversity of traits in advanced inbred lines of barley from 23 public and private barley breeding programs, which they analyzed to identify mega-targets of selection (i.e. groups of breeding programs likely to be compatible for germplasm exchange) among those breeding programs. Results from this research are published in the January 2009 issue of the journal Crop Science.

The researchers found that all phenotypic traits had significant genetic diversity, but only seven of the 20 traits evaluated showed differences in the amount of diversity among the breeding programs. Some breeding programs had high levels of diversity for most traits, while others had low levels of diversity.

The methodology proposed by the authors groups breeding programs by their performance and by their response to changes in the environment, resulting in sets of breeding programs with similar performance and similar adaptations. They call these sets mega-targets of selection. The authors identified three mega-targets of selection among the barley breeding programs. They hypothesize that exchange of germplasm within mega-targets of selection would produce adapted genotypes with high yields. Research is ongoing to develop larger data sets to evaluate this method.


'/>"/>

Contact: Sara Uttech
suttech@crops.org
608-268-4948
Crop Science Society of America
Source:Eurekalert

Related biology news :

1. Biomarkers for identifying infant infections
2. Researchers devise means to create blood by identifying earliest stem cells
3. Oil palm research in context: Identifying the need for biodiversity assessment
4. Plants take a hike as temperatures rise
5. High CO2 boosts plant respiration, potentially affecting climate and crops
6. Cold Spring Harbor Protocols features stem cell differentiation, plant RNAi methods
7. Plant soybean early to increase yield
8. Genome of a heat and drought resistant cereal plant analyzed
9. Climate changes impact on invasive plants in Western US may create restoration opportunities
10. Billion-year revision of plant evolution timeline may stem from discovery of lignin in seaweed
11. Scientists identify bacteria that increase plant growth
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... 2017 No two people are believed ... New York University Tandon School of Engineering and ... that partial similarities between prints are common enough ... phones and other electronic devices can be more ... lies in the fact that fingerprint-based authentication systems ...
(Date:4/6/2017)... Forecasts by Product Type (EAC), Biometrics, Card-Based ... & Logistics, Government & Public Sector, Utilities / Energy ... Nuclear Power), Industrial, Retail, Business Organisation (BFSI), Hospitality & ... for a definitive report on the $27.9bn Access Control ... ...
(Date:4/5/2017)... -- Today HYPR Corp. , leading innovator in ... the HYPR platform is officially FIDO® Certified . ... that empowers biometric authentication across Fortune 500 enterprises and ... 15 million users across the financial services industry, however ... suites and physical access represent a growing portion of ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , Oct. ... Cancer Research, London (ICR) and University ... SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple myeloma ... MUK nine . The University of Leeds ... partly funded by Myeloma UK, and ICR will perform the ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... conjugate (ADC) therapeutics, today confirmed licensing rights that give it exclusive global ... technology developed in collaboration with Children’s Hospital Los Angeles (CHLA). Additionally, ...
(Date:10/10/2017)... ... October 10, 2017 , ... USDM ... firm for the life sciences and healthcare industries, announces a presentation by Subbu ... , The presentation, “Automating GxP Validation for Agile Cloud Platforms,” will present a ...
(Date:10/9/2017)... ... 2017 , ... The Giving Tree Wellness Center announces the ... of consumers who are incorporating medical marijuana into their wellness and health regimens. ... operators of two successful Valley dispensaries, The Giving Tree’s two founders, Lilach Mazor ...
Breaking Biology Technology: