Strawberry (Fragaria × ananassa Duch.) can be easily propagated with daughter plants or through crown division, which are developed from the axillary bud at axils of leaves. This study was conducted to investigate effects different cytokinins, auxins, and their combinations on growth in strawberry. Four cytokinins (6-benzyladenine, kinetin, zeatin, thidiazuron (TDZ)) three auxins (indole-3-acet...

Algal bioproducts are of growing interest to agriculture because their biodegradable nature, ability restore soil fertility, and capacity for plant growth regulation, nitrogen fixation, carbon sequestration. Plants respond a suite hormones; auxins present in algal extracts or secreted exogenously by living algae may be partially responsible the stimulation growth. Auxins major class phytohormon...

A neutral substance, convertible to an acid auxin, is present in various plant extracts (5, 9) and chemical preparations (9). As indicated by a number of biological tests, the neutral substance is in all likelihood 3-indole acetaldehyde and will for convenience be designated by this name in the present paper. In a previous paper (11) it was shown that 3-indole acetaldehyde is rapidly converted ...

nut (Juglans regia L.) shoots by subculturing the shoots on rooting medium containing agar and 3 mg l indole-3-butyric acid (IBA) for 7 days in darkness. Changes in the concentrations of endogenous free indole-3-acetic acid (IAA), indole-3acetylaspartic acid (IAAsp) and free polyamines were determined during culture on root-inducing medium. In extracts of whole shoots, the concentration of free...

Three bioassays were used for testing the level of regulator activity in methanolic extracts of the various fruit tissues: (a) the wheat coleoptile straight growth assay, to test auxins and coleoptile elongation-inhibiting substances; (b) the barley endosperm assay, to test gibberellin activity and the inhibitors of this activity; and (c) the growth of soybean callus in tissue culture, to test ...

Indole-3-acetic acid stimulates ethylene production in the nodal region of pea stems, and the gas inhibits bud growth. At all concentrations of IAA there is a close correlation between the intensity and duration of ethylene production and the bud inhibition which results. Kinetin reverses the inhibitory actions of ethylene and IAA on bud growth. It is concluded that auxins suppress bud developm...