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| Format: | Artículo Open Access |
| Published: |
Wiley
2025
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| Online Access: | https://scijournals.onlinelibrary.wiley.com/doi/10.1002/ps.70039 |
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Table of Contents:
- Reduced sensitivity of winter Wheat (Triticum aestivum) to triketone herbicides is a partially dominant, polygenic trait Susee Sudhakar Mithila Jugulam Pest Management Science AbstractBACKGROUNDWheat production is challenged by weed competition and herbicide‐resistant weeds, necessitating alternative herbicides with distinct modes of action. Mesotrione and tembotrione, typically used in corn, are not registered for wheat. Prior research identified wheat genotypes WW‐1 and WW‐2 as least sensitive and WW‐24 as most sensitive to these herbicides, likely due to cytochrome P450‐mediated metabolism. To examine the inheritance of this sensitivity, we crossed these genotypes and analyzed F1 and F2 progenies.RESULTSDose–response experiments on F1 progenies revealed intermediate sensitivity to both herbicides, indicating partial dominance. F2 progenies treated with mesotrione (630 g ai h−1) or tembotrione (552 g ai h−1) did not display Mendelian single‐gene inheritance patterns. This suggests that the reduced sensitivity in WW‐1 and WW‐2 is a polygenic trait associated with P450‐mediated herbicide metabolism.CONCLUSIONThis study reveals genetic mechanisms underlying wheat's differential sensitivity to HPPD‐inhibitors, providing insights that may support breeding or genetic engineering of herbicide‐tolerant wheat in the future. © 2025 Society of Chemical Industry. 10.1002/ps.70039 http://onlinelibrary.wiley.com/termsAndConditions#vor