Cytokinins are phyto-hormones that take their name from the cytokinesis, one of the most important moments of the cell division process. Cytokinins have an essential role in the cell division and differentiation, during the break of the lateral buds and also are related with delayed senescence of various organs. In the catalogue of the agricultural division of ADIEGO HERMANOS S.A. there is a product based on cytokinins with a very interesting physic-agronomic effects : SELEKTER KININE