Physiology of Glyphosate-Resistant and Glyphosate-Susceptible Palmer Amaranth (Amaranthus palmeri) Biotypes Collected from North Carolina

Figure 2

Shikimate accumulation by glyphosate-resistant and glyphosate-susceptible Palmer amaranth 5 d after glyphosate application. Data are pooled over two experiments. Regression expressions are resistant biotype, 𝑌=0.000001𝑥²+0.01𝑥−0.36, 𝑟²=0.99; susceptible biotype, 𝑌=145/(1+𝑒^{−((𝑥−1246)/406)}), 𝑟²=0.99.