Abstract
Abstract Shoot tips from in vitro cultures of Veronica spicata L. ‘Red Fox’ were grown on modified Woody Plant Medium containing one of 3 cytokinins or cytokinin plus NAA. Of the 3 cytokinins tested (BA, kinetin, and 2iP), BA was the most effective stimulator of axillary shoot growth. The greatest number of shoots greater than or equal to 5 mm in length was produced on medium containing 8 μM BA plus 0.01 μM NAA, whereas medium containing 2 μM BA plus 0.01 μM NAA produced the greatest number of shoots greater than or equal to 10 mm. Shoots were rooted and established at an 80% rate in a soilless medium under high humidity. Chemical names used: N-(phenylmethyl)-1H-purin-6-amine (BA); N-(3-methyl-2-butenyl)-1H-purin-6-amine (2iP); N-(2-furanylmethyl)-1H-purin-6-amine (kinetin); 1-naphthaleneacetic acid (NAA).
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