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Updated: Sep 21, 2025

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections
Published on: April 17, 2015
Drought tolerant wheat IND-ØØ412-7 is nutritionally equivalent to its Non-Transgenic Comparator
Patricia V Miranda1,2, Bernardo F Iglesias3, María V Charriere3
1Instituto de Agrobiotecnología Rosario (INDEAR), Santa Fe, Argentina.
Genetically modified HB4® wheat, engineered for drought tolerance, demonstrated nutritional equivalence to conventional wheat in a broiler feeding study. This finding supports the safety and viability of HB4® wheat for animal consumption.
Area of Science:
- Agricultural Science
- Biotechnology
- Animal Nutrition
Background:
- Wheat event IND-ØØ412-7 (HB4® wheat) expresses the HAHB4 sunflower transcription factor, enhancing drought tolerance.
- Compositional equivalence of HB4® wheat with conventional wheat has been established.
- Nutritional assessment is crucial for the acceptance of genetically modified (GM) crops.
Purpose of the Study:
- To evaluate the nutritional equivalence of HB4® wheat (event IND-ØØ412-7) compared to its non-genetically modified (GM) counterpart.
- To assess the impact of HB4® wheat on broiler performance and yield.
Main Methods:
- A 42-day broiler feeding study was conducted using isoenergetic diets containing 40% flour from HB4® wheat, its non-GM counterpart (Cadenza), and a commercial variety.
- Broiler performance metrics included feed intake, weight gain, feed conversion, and time to reach a target weight.
- Carcass yield parameters such as carcass weight, breast meat, and abdominal fat were evaluated.
Main Results:
- No significant differences in broiler performance or yield were observed between HB4® wheat and its non-GM counterpart.
- Some differences were noted when compared to a commercial variety, attributed to genetic background variations.
- The study confirmed the nutritional similarity of HB4® wheat to conventional wheat.
Conclusions:
- HB4® wheat (event IND-ØØ412-7) is nutritionally equivalent to conventional wheat.
- The genetic modification for drought tolerance does not adversely affect the nutritional profile for broiler chickens.
- These findings support the safety and suitability of HB4® wheat for animal feed applications.
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