Glyphosate tolerance of transgenic tobacco under different glyphosate concentrations.

<p>Tobacco seeds of generation T1 were germinated on the MS medium containing 10 mg L⁻¹ PPT and grown for 7 days at 100 µmol s⁻¹ m⁻² with a 16 h light/8 h dark period. The live seedlings were transferred to MS medium in plates containing different amounts of glyphosate and grown vertically for another two weeks.