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James Robert Ault and Sandy S. Siqueira

on the control medium (no PGR treatment) an average of 2.5 shoots/explant. What is interesting is that three of the four PGRs tested (dicamba, picloram K-IBA) stimulated significantly higher shoot production rates than for the control ( Table 1

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Bruce L. Dunn and Jon T. Lindstrom

were considered dead. After 2 months, in vitro shoots were dipped in 1000 ppm potassium salt of indole-3-butyric acid (K-IBA) and rooted in a Park Seed Bio Dome and Bio Sponges (Greenwood, SC). Root initiation occurred within 2 weeks, and plants were

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Susan M. Hawkins, John M. Ruter, and Carol D. Robacker

were each clones of one genotype of each species. Cuttings of each species were taken, treated with a 5-s dip of potassium salt of indole-3-butyric acid (K-IBA) at 1000 mg·L −1 , and stuck in Fafard Germination Mix containing processed pine bark (40

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Susan M. Hawkins, John M. Ruter, and Carol D. Robacker

University of Georgia (UGA), Athens, GA. Stock plants of T. fothergillae × pilosa plants were obtained from the Tifton campus of UGA. Cuttings were treated with a 5-s dip of 1000 ppm K-IBA, and placed under 30% shadecloth and 8 s mist every 10 min until

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Julia A. Cartabiano and Jessica D. Lubell

cutting size on rooting and subsequent growth of Acer rubrum ‘Red Sunset’ cuttings J. Environ. Hort. 5 122 124 Still, S.M. Zanon, S. 1991 Effects of K-IBA rates and timing on rooting percentage and root quality of Amelanchier laevis J. Environ. Hort. 9

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Amanda J. Hershberger, David A. Knauft, and Carol D. Robacker

dipped into 1% K-IBA solution and then placed under mist in 16-cell packs containing 3:1 Fafard 3B (Conrad Fafard, Inc., Agawam, MA) and perlite for 8 weeks. Plants were potted in 0.00382-m 3 volume containers (trade #1) with Fafard 3B on 14 Nov. 2006

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Bruce L. Dunn and Jon T. Lindstrom

the spring or summer, dipped in 1000 ppm K-IBA, and placed under intermittent mist in perlite or other similar medium. To introduce the hybrids into tissue culture, shoot tips 2 to 3 cm in length were collected and mature leaves were removed. The

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Ryan N. Contreras, Thomas G. Ranney, and Shyamalrau P. Tallury

. Materials and Methods Plant material. A single plant of Rhododendron ‘Fragrant Affinity’ was received from Dr. August Kehr in 2000. Semihardwood cuttings were taken in late summer, treated with 5000 ppm K-IBA, set in 1 peat:1 perlite (by volume

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Zhitong Li and John M. Ruter

methods described above. Identified triploids were then transplanted individually into 7.5-cm containers for further evaluation. Three-node stem cuttings were taken from tetraploids before they entered dormancy. After being dipped in 300 mg·L −1 K-IBA

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Olivia Sanchez, Stephanie E. Burnett, and Bryan J. Peterson

gently scraping the bark on one side using a razor blade. They were treated with 8000 mg·L −1 K-IBA (Sigma Chemical Co., St. Louis, MO) by dipping the basal 2.5 cm of each cutting in the solution for 10 s and allowing them to air-dry for up to 10 min