AHRI PhD student, Jinyi Chen, studied the inheritance of trifluralin resistance with target site resistance in ryegrass. She found that resistance is single gene recessively inherited. This means that both parents must have a copy of the resistance gene for the progeny to be resistant.Recessive resistance inheritance is rare in the world of herbicide resistant weeds. Nearly all other cases of target site herbicide resistance involve semi-dominance.This could be part of the reason why trifluralin resistance in ryegrass was slower to evolve than other types of herbicide resistance. However, there is always more than one resistance mechanism.Jinyi joined us on the podcast one last time before she left for post-grad work in Canada. Take a listen!
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