Elsevier

Plant Science Letters

Volume 1, Issue 6, June 1973, Pages 241-245
Plant Science Letters

Cytokinin activity of commercial aqueous seaweed extract

https://doi.org/10.1016/0304-4211(73)90026-6Get rights and content

Abstract

Cytokinin activity of a commercial aqueous seaweed extract was demonstrated by the promotion of growth in vitro of carrot explants in a cytokinin-free medium containing the seaweed extract. Cytokinin activity of the seaweed extract was confirmed by the increase in growth it produced with tissue-cultured cells of a cytokinin-requiring strain of Atropa belladonna, and also by the radish leaf bioassay. The results obtained show that the seaweed extract has a cytokinin activity capable of producing physiological changes, even when applied at the low concentrations used in practice.

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