The Effect of Stock Plant Etiolation on Rooting and Overwinter Survival of Deciduous Azalea Cuttings

Apine, Inga; Freidenfelds, K.; Megre, Dace; Dokane, K.; Kondratovics, U.

doi:10.17660/actahortic.2013.990.60

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“…Etiolation led to the highest rooting probability and average number of roots per cutting, followed by shade and light treatments. The general correlation between the degree of stock plant shading and the increased rooting of cuttings has been observed in numerous difficult-to-root taxa, such as creeping juniper 'Andorra' (Hansen 1997), European hornbeam 'Fastigiata' (Maynard and Bassuk 1992), and azalea cultivars (Apine et al 2013). Of particular note in this experiment is the fact that among cuttings from etiolated stock plants, there were no significant differences in rooting probability by banding treatment (Fig.…”

Section: Discussionsupporting

confidence: 53%

“…(Nelson 1987), bigtooth maple (Acer grandidentatum Nutt.) (Richards and Rupp 2012), several oak (Quercus L.) species (Hawver and Bassuk 2000), and certain azalea (Rhododendron L.) cultivars (Apine et al 2013). Cuttings taken from etiolated stock plants have been treated with a synthetic auxinnamely, indole-3-butyric acid (IBA) or 1-naphthaleneacetic acid (NAA), to promote rooting further.…”

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confidence: 99%

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Light Reduction, Banding, and IBA Treatments Influence Adventitious Rooting of Lindera benzoin Stem Cuttings

Stokes

Bassuk

Miller

2023

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An investigation was undertaken to determine whether various light reduction and shoot banding treatments could increase rooting on stem cuttings of Lindera benzoin [(L.) Blume] (northern spicebush), a difficult-to-root woody plant. Stock plants were grown under one of three light conditions (light, shade, or etiolation). Emerging shoots received either no treatment or a banding treatment that involved adhering a hook-and-loop fastener coated with varying concentrations of indole-3-butyric acid (IBA) around the shoot base to create a localized etiolated zone before taking cuttings. Data on rooting percentage and number of roots per cutting were analyzed using logistic and Quasi-Poisson regression, respectively. Etiolated cuttings treated with a band without IBA had the highest rooting probability and number of roots; however, etiolated cuttings across all banding treatments had similarly successful results. Additionally, there were several significant differences in rooting probabilities and root numbers between banding treatments within the shade- and light-grown groups. This research evaluated asexual propagation approaches for use with northern spicebush and provides a framework for the adoption and development of this taxon as a nursery crop.

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Section: Discussionsupporting

confidence: 53%

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confidence: 99%