Some new research by AHRI PhD student, Huan Lu, has shed some light on Atrazine resistant wild radish and the results have some very practical applications for growers and agronomists.The most common target site mutation that causes Atrazine resistance in wild radish is the 264 mutation, the same mutation that gave us TT Canola. They have very high resistance to Atrazine and as it turns out they are super-sensitive to Bromoxynil, requiring only about a third of the Brom rate that it takes to kill susceptible wild radish. Wild radish with the 264 mutation is also resistant to metribuzin.Huan Lu also discovered a new target site mutation, the 274 mutation that causes modest levels of resistance to Atrazine, Metribuzin and Diuron but not Bromoxynil.
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