Seed Dormancy: Major Genetic Component of Pre-harvest Sprouting Resistance in White Wheat
May 28, 2010| |
Preharvest sprouting (PHS) is a major problem in the production of white wheat in rain-affected areas. PHS is characterized by the emergence of grains in a physiologically matured spike before harvest time. This is not favorable in production because the condition reduces the grain yield, nutritional value and processing quality of white wheat. According to previous studies, seed dormancy (SD) is the major factor that hinders PHS. Thus, Shubing Liu of Kansas State University, together with other researchers, identified the locations of genes controlling PHS in white wheat and the genetic relationship of PHS resistance and SD.
Based on a statistical method called quantitative trait loci analysis, resistance to PHS is a complex trait controlled by several stretches of DNA or quantitative trait loci (QTLs) and other nongenetic factors. Evaluation of the mapping population for both intact spike PHS and SD of threshed seeds harvested from field and greenhouse experiments showed that PHS resistance and long SD were both controlled by the same four QTLs. Thus, SD is indeed the major component of PHS.
The abstract of this study is available at http://www.springerlink.com/content/m576431vw8564118/?p=63c68b96001f4daeb87cdd4ca15bc0e1&pi=4.
| |
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
-
See more articles:
-
News from Around the World
- U.S. Launches ‘Feed the Future' Initiative
- New Mutations of UG99 Pose Threat to Wheat Production
- Cargill Grant Program Helps Fight Global Malnutrition and Hunger
- CBSD - Emerging Threat to Cassava Production
- Genes Delaying the Aging of Flowering Plants
- ARS' Research Efforts to Develop Better Potatoes
- Seeds of Aflatoxin-Resistant Corn Lines Available
- Biofortification as Part of the ‘Feed the Future' Strategy
- Peru's National Academy of Sciences Sides with Bustamante
- NSF Awards Research Grant to Improve Nitrogen Fixation of Legumes
- MABIC Organizes Biotech Workshops for Malaysian Educators
- Chinese Officers Bat for Biotech
- Bangladesh Tackles Strategies to Advance Agricultural Development
- Boosting Rice and Maize Production in Bangladesh
- Philippine Agri State University Partners with Media on Biotechnology
- ASFARNET Holds Farmers Forum in the Bicol Region, Philippines
- Italy Donates to International Treaty to Conserve Food Crop Varieties
- New Wheat with More Health Power
- DEFRA Approves GM Potato Trial
- Framing of Biotech Issues by Newspapers in Britain, Germany and U.S.
-
Research Highlights
- Seed Dormancy: Major Genetic Component of Pre-harvest Sprouting Resistance in White Wheat
- Correlation of Aflatoxin Resistance and Drought Tolerance Traits in Peanuts
- Relationship of Salt Stress Sensitivity to Stress Induced Gene of Egyptian Clover
- Chinese Scientists Define Ideal Plant Architecture in Rice by Regulation of OsSPL14
-
Announcements
- 2010 Trieste Science Prize
- CBU Feedback Survey
- World Environment Day Celebration, Rwanda
-
Resources
- FAO Documents on Agricultural Biotechnologies in Developing Countries
- Pocket K 37 on Biotech Rice Now Available
-
Read the latest: - Biotech Updates (September 18, 2024)
- Gene Editing Supplement (September 11, 2024)
- Gene Drive Supplement (February 22, 2023)
-
Subscribe to BU: - Share
- Tweet