Regulation of adventitious roots formation by auxin and cytokinin of derooted cucumber seedling in relation to auxin transport [electronic resource].

Includes references.

The effects of application of synthetic cytokinin (CK) 1-(2-chloro-4-pyridyl)-3- phenylurea (CPPU) and synthetic auxin Indole butyric acid (IBA) on adventitious root formation in cucumber hypocotyl were studied. Both plant growth regulators were supplied to derooted cucumber seedlings either as droplet of solution between the cotyledons (apical application) and/or through the hypocotyls stump (basal application). Epically applied CPPU or IBA increased auxin transport out of hypocotyls and stimulated adventitious root. In contrast basal applied CK or IBA decreased auxin transport and adventitious root formation. Several developmental parameters of derooted seedling (phenols, chlorophyll, sugars, and number of adventitious root growth) were studied in correlation to previous treatments and auxin transport. Furthermore anatomical structures of vascular bundles of treated hypocotyls were examined in relation to plant adventitious root formation and auxin transport.

Summary in Arabic.

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