Response of wild oats to environmental stresses
2021
Ali, Mohammad | Williams, Alwyn | Widderick, Michael | Adkins, Steve
Take home message • When under heat and water stress, wild oat plants can mature 3 weeks earlier than non-stressed plants • Stressed plants produce 30% fewer seeds; additionally, these seeds are 40% smaller and show less dormancy than seeds from non-stressed plants • Seed dormancy can differ between biotypes and between the two types of seeds (primary and secondary) produced by wild oat plants • Early plant maturation can cause early seed shedding depending on the severity of heat and water stress • If the occurrence of late season environmental stresses becomes more frequent as forecast under a changing climate, the efficacy of strategies such as harvest weed seed control may further diminish for wild oats.
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