NEWS

Global
Climate Experts Tackle Food Security - Climate Change Challenge 

Africa
Africa Can Learn from China Says IFPRI Head 
FAO Calls for More Effort to Attain African Food Security 
Interregional Biotech Exchange Program to Promote Product Stewardship 
Implications for Climate Change in Africa 
UN Blanket Feeding Operation to Fight Children Malnutrition in Niger 

Americas
ARS Scientists Identify Genetic Resistance to Rice Sheath Blight 
U.S. EPA Approves Insect Refuge 'In-The-Bag' Seed Product 
Texas Tech Gets Bayer Research Grant 
Seed Mixtures vs Structured Refuges for Bt Hybrids 
High Oleic Soybean Oil Projected for 2012 Release 
Obama Administration Strategizes to Improve Food Aid 

Asia and the Pacific
Warmer Nights Threaten India's Rice Production 
Hurdling Barriers to Bt Brinjal Commercialization 
Workshop on LLP of Agri-Biotech Products in Indonesia 
Invitation to Comment on the RARMP for GM Cotton 

Europe
Organic Farming: Limited Benefit to Wildlife Does Not Compensate for Lower Yields 
UK Scientists Conduct Oats Study 

Research
Relationship of Rice Fragrance and Yield Reduction Under Salt Treatment 
Development of a Core Set in Brinjal 
Greenhouse Assays Measure Responses of Synthetic Hexaploid Wheat to Tan Spot 

Announcements
US-French Symposium on Water, Food Security and Climate Change in Purdue 
India Bio 2010 

Document Reminders
Developing a Biosafety Law- Lessons from the Kenyan Experience 

Greenhouse Assays Measure Responses of Synthetic Hexaploid Wheat to Tan Spot

Decreased tillage, together with limited use of rotation crops have led to increase in the severity of the tan spot of winter wheat (Triticum aestivum L.) in the southern Great Plains. Though genetic resistance helps control the pest, only a few commercial lines are available in the south Great Plains which has highly effective resistance. This paved the way to a search for the germplasm or genetic resources with resistance to tan spot through greenhouse experiment.

Jana F. Morris of the Oklahoma State University and colleagues conducted the greenhouse assay to identify new sources of resistance, evaluate the differences in physical characteristics in the tan spot reaction and confirm the quantitative visual assay using digital techniques. Results showed that more than 50% of the 94 synthetic hexaploid wheat samples assayed exhibited percentage leaf infection close to the percentage of the resistant check. Visual estimates were also correlated with the digital estimates. Based on the assay results, a significant amount of genetic resources may be removed for unfavorable susceptibility to tan spot.

The abstract of this study is available at http://crop.scijournals.org/cgi/content/abstract/50/3/952.


Share    

This article is part of the Crop Biotech Update, a weekly summary of world developments in agri-biotech for developing countries, produced by the Global Knowledge Center on Crop Biotechnology, International Service for the Aquisition of Agri-Biotech Applications SEAsiaCenter (ISAAA)

Subscribe to Crop Biotech Update Newsletter
Crop Biotech Update Archive
Crop Biotech Update RSS
Biofuels Supplement RSS

Article Search: