1. One of these cytokinins is identified as zeatin by Rf values, UV absorption, melting point of its picrate and its biological activity.

2. Zeatin is a Cytokinin derived from adenine, which occurs in the form of a cis- and a trans-isomer and conjugates

3. 22 The inhibition of 6-Benzyl Aminopurine (BAP) and Zeatin (ZT) on root and anther tissues respiration of maize was studied.

4. Cell division was stimulated by a combination of zeatin (10−6 M), naphthaleneacetic acid (10−5 M), and 2,4-dichlorophenoxyacetic acid (10−7 M) in the basic nutrient medium.

5. Cytokinins were first discovered in 1955 as promoters of cell division in the DNA of Herring sperm. Since that discovery many different compound with Cytokinin activity have been discovered, both natural (trans-zeatin; benzladenine) and synthetic (diphenylurea).