Erratum to: Plant Cell Tiss Organ Cult (2013) 114:39–48 DOI 10.1007/s11240-013-0303-5

There is an error in the caption to Fig. 2 in the original publication. The text for figure part 2a actually concerns part 2b and vice versa. The correct caption is shown below.

Fig. 2 Plant regeneration from another culture of poplar (P. × beijingensis). a Haploid plantlets on rooting medium after 1-month culture. b Diploid plantlets after 2 months of culture in rooting medium. c Triploid plantlet after 2 months of culture in rooting medium. Bars = 1 cm