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Screening of C. sulphureus Cav. putative transformants in the selection medium containing 50 ppm kanamycin. a) Wild-type seeds did not germinate on the selection medium after 7 days. b) Seedlings selected from the selection medium containing 50 ppm kanamycin after 7 days. c) Transformed cosmos plants at age of 6 weeks. WT: Wild type; T1a and T1b: first-generation transgenic cosmos plants.
