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Percent AMF colonization of non-Bt parental (P) and Bt maize roots 60, 90, and 130 day after sowing (DAS). Open bars represent the means (± SE) for non-Bt parental maize lines, and solid bars represent the means (± SE) for Bt maize lines. Five plants were harvested from each plot 60 DAS, 10 plants were harvested from each plot 90 DAS, and 5 plants were harvested from each plot 130 DAS, for a total of 480 root samples over the course of this experiment.
