Cytokinins (CK) belong to a class of plant growth substances (plant hormones) which promote cell deivision by means of local and long distance signalling.

meta-Topolin is an aromatic cytokinin, first isolated from poplar leaves. It is an adenine-based cytokinin that generally causes less root inhibition than 6-Benzylaminopurine (6-BA).

The name meta-Topolin is derived from “topol”, the Czech word for poplar. The metabolism of meta-topolin is similar to that of other cytokinins. Just as zeatin and BAP, meta-topolin may undergo ribosylation at position 9 without a significant effect on the activity. In Spathiphyllum floribundum, shoot production in media with BAP and meta-topolin is very similar. However, after transfer to the soil, the shoots produced with meta-topolin root much better during acclimatization.