Fig. 1From: Effect of a suitable treatment period on the genetic transformation efficiency of the plant leaf disc methodPhenotypic characteristics of poplar and tobacco under different culture times in vitro. Phenotypic characteristics of poplar leaves A, poplar stem segments B, and tobacco leaves C were cultured on plates containing differentiation medium for 0–5 days. Bars = 1 cm. Poplar leaves D, poplar stem segments E, and tobacco leaves F were observed under a stereo microscope after 0–5 days of differentiation culture. The red arrow marked the place where healing tissue was producedBack to article page