Conventional Backcrossing Practices Affect Grain Composition of GE Maize HybridsNovember 11, 2015
A study published in Transgenic Research shows that differences in grain composition of GE maize hybrids and its non-GE counterparts are more likely due to backcrossing practices instead of the GE trait.
In the study, the researchers generated four paired GM trait-positive (NK603: herbicide tolerance) and trait-negative near-isogenic inbred male lines which were crossed with two different females to create a series of trait-positive and trait-negative hybrids. The F1 hybrids and the corresponding non-GE comparator hybrids were grown concurrently at four field sites. The grains were subjected to composition analysis in terms of proximates (protein, starch, oil) amino acids, fatty acids, minerals, tocopherols, beta carotene, phytic acid and raffinose.
Results of the statistical analysis showed that within each hybrid tester set, there were very few significant differences between the paired trait-positive and trait-negative hybrids or between the conventional comparators and the trait-positive or trait-negative hybrids. Furthermore, results implied that location, and the tester used in hybrid formation, had more impact on the composition than did the GE trait.
Read the research article in Transgenic Research.
The Crop Biotech Update is a weekly newsletter of ISAAA, a not-for-profit organization. The CBU is distributed for free to over 23,000 subscribers worldwide to inform them about the key developments in biosciences, especially in agricultural 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
- Ghana High Court Rules in Favor of Biotech
- GE Cassava to Address Vitamin B6 Deficiency in Africa
- Boosting Plant Alert System to Counter Stealthy Diseases
- Genome Sequencing Project Sheds Light on Date Palm's Origin
- Tobacco Traded its Immunity to Survive Harsh Environments
- Former Biotech Critic/Journalist Authors Science-based Book on GM Crops
- Research Team Discovers How Plants Defend their Territory with Toxic Substances
- Poppy Genes Transferred to Different Plants to Prevent Self-Pollination
- JIC Scientists Develop Tomatoes Rich in Phytochemicals
- Plant Discovery Leads to Treatment of Leukemia
- Conventional Backcrossing Practices Affect Grain Composition of GE Maize Hybrids
- TaNAC29 from Wheat Enhances Salt and Drought Tolerance in Arabidopsis
- Tobacco NsylCBL10 Overexpression Enhances Salt Tolerance in Arabidopsis
- Expression of RsMYB1 in Chrysanthemum Regulates Anthocyanin Biosynthetic Genes
From the BICs
- Vietnam BIC Holds Biotech Crops Seminar in Quang Ninh Province
Read the latest:
- Crop Biotech Update (September 28, 2022)
- Genome Editing Supplement (September 21, 2022)
- Gene Drive Supplement (September 28, 2022)
Subscribe to CBU: