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Adventitious Presence of Herbicide Resistant Wheat in Certified and Farm-Saved Seed Lots

^a Dep. of Soil and Crop Sciences, 1170 Campus Delivery, Colorado State Univ., Fort Collins, CO 80523
^b School of Agriculture, Food, and Wine, Univ. of Adelaide, PMB 1, Glen Osmond, SA, Australia
^c USDA-ARS, Central Great Plains Research Station, 40335 County Rd. GG, Akron, CO 80720
^d Dep. of Bioagricultural Sciences and Pest Management, 1177 Campus Delivery, Colorado State Univ., Fort Collins, CO 80523

View larger version (18K): [in this window] [in a new window]   Figure 1. Response of a non-imidazolinone-resistant (‘Ike’, ) and an imidazolinone-resistant (‘Above’, •) wheat (Triticum aestivum L.) cultivar to 24-h seed soaking in various concentrations of imazamox herbicide. Data are means with standard error bars of six replicates across two experiments. Lines are log-logistic fits to the data and are y = 100/{1 + e[(0.824–logx)*–6.915)] } for Ike and y = 108.3/{1 + e[(2.665–logx)*–3.829)]} for Above.