Rooting of Fraser fir cuttings: effects of postseverance chilling and photoperiod during rooting

1982 ◽  
Vol 12 (3) ◽  
pp. 607-611 ◽  
Author(s):  
N. F. Miller ◽  
L. E. Hinbsley ◽  
F. A. Blazich
Keyword(s):  
Stem Cuttings ◽  
Winter Dormancy ◽  
Indolebutyric Acid ◽  
Fraser Fir ◽  
Rooting Medium ◽  
Terminal Bud ◽  
Promotive Effect ◽  
Early Fall ◽  
State Of Rest

Terminal stem cuttings from 5-year-old Fraser fir (Abiesfraseri (Pursh) Poir.) stock plants were collected in early fall, when in a state of rest or winter dormancy. Cuttings were subjected to dark storage at 4 °C for 0, 2, 4, 6, 8, 10, or 12 weeks. Following storage, and prior to insertion into a rooting medium, cuttings were subjected to one of two treatments: nontreated, and wounding + indolebutyric acid (IBA). Cuttings received short- or long-days during a 10-week rooting period. Nonchilled cuttings did not root or break bud. High percent rooting occurred after 4–6 weeks of chilling, whereas visible terminal bud activity peaked after a 10-week chill. Rooting was primarily contingent upon IBA treatment and chilling, although long days had a strong promotive effect when cuttings were chilled less than 6 weeks.

scholarly journals Propagation of Thuja x ‘Green Giant’ by Stem Cuttings: Effects of Growth Stage, Type of Cutting, and IBA Treatment

1998 ◽  
Vol 16 (4) ◽  
pp. 212-214
Author(s):  
Jason J. Griffin ◽  
Frank A. Blazich ◽  
Thomas G. Ranney
Keyword(s):  
Root Length ◽  
Growth Stage ◽  
Growth Stages ◽  
Stem Cuttings ◽  
Root Number ◽  
Stock Plant ◽  
Indolebutyric Acid ◽  
First Order ◽  
Rooting Medium ◽  
Plant Growth Stages

Abstract Stem cuttings of Thuja L. x ‘Green Giant’ (‘Green Giant’ arborvitae), consisting of 22 cm (8.6 in) terminals (tips of first-order laterals) or 20 cm (7.8 in) laterals (side shoots removed from those portions of terminal cuttings inserted into the rooting medium), were collected on three dates associated with specific stock plant growth stages (softwood, semi-hardwood, and hardwood) and treated with indolebutyric acid (IBA) in 50% isopropanol ranging from 0 to 9000 ppm (0.9%). Regardless of cutting type or auxin treatment, cuttings rooted in high percentages at each growth stage. Overall rooting for softwood, semi-hardwood, and hardwood, cuttings was 85%, 86%, and 96%, respectively. Semi-hardwood cuttings were the only cuttings in which percent rooting was affected by IBA treatment or cutting type, with lateral cuttings rooting in higher percentages than terminal cuttings (92% vs. 79%, respectively), while IBA concentrations of 3000 (0.3%) or 6000 ppm (0.6%) proved optimal for both cutting types. Mean root number and mean root length varied by growth stage, cutting type, and IBA concentration. In general, rooting percentages and root length were optimized at the hardwood stage with either cutting type treated with 3000, 6000 or 9000 ppm (0.3%, 0.6% or 0.9%) IBA, resulting in >10 roots per cutting.

Influence of postseverance treatments on the rooting capacity of Fraser fir stem cuttings

1981 ◽  
Vol 11 (2) ◽  
pp. 317-324 ◽  
Author(s):  
L. E. Hinesley ◽  
F. A. Blazich
Keyword(s):  
Negligible Effect ◽  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Fraser Fir ◽  
Lateral Buds ◽  
Bottom Heat ◽  
Rooting Response ◽  
Rooting Capacity ◽  
Better Than ◽  
Applied Auxin

Postseverance treatments of wounding, auxin, disbudding, bottom heat, and chilling were examined for their effects on rooting stem cuttings (tips of primary axes) of young Fraser fir (Abiesfraseri (Pursh) Poir.) stock plants. Applied auxin consistently increased rooting percentages and the number and length of roots. Wounding alone did not affect the rooting response, but was beneficial in combination with applied auxin. Certain wounding treatments were better than others. Roots rarely emerged from wound margins and were usually observed at the base of cuttings. Bottom heat enhanced rooting, particularly in combination with wounding + auxin. Removal of lateral buds had a negligible effect on rooting. Following 4 and 8 weeks of artificial chilling, cuttings initially taken in early November rooted well if treated with wounding + indolebutyric acid. However, terminal budbreak was more complete following an 8-week chill. Cuttings taken in late January rooted well without additional chilling. Less chilling was required for rooting than for budbreak.

scholarly journals The Propagation of Guavas from Stem Cuttings

1969 ◽  
Vol 47 (4) ◽  
pp. 280-289
Author(s):  
W. Pennock ◽  
G. Maldonado
Keyword(s):  
Acid Treatment ◽  
Coarse Sand ◽  
Appreciable Effect ◽  
Stem Cuttings ◽  
High Susceptibility ◽  
High Concentration ◽  
Indolebutyric Acid ◽  
Anthracnose Disease ◽  
Rooting Media ◽  
Fine Gravel

1. A highly successful propagation method is described by which hundreds of side-sprouts are first induced on the parent guava tree. These are later cut and rooted under alternatmg mist, with leaves attached. By using this method it is possible to produce from 500 to 1,000 guava plants from a single 3-year-old tree within 10 months. 2. An experiment is also described and discussed which showed that different rooting media, such as coarse sand and very fine gravel, with Coco-peat, fir bark, Vermiculite, Perlite, and Mexifern, had no appreciable effect on rooting. But treatment with a relatively high concentration, 200 p.p.m., of indolebutyric acid improved and accelerated rooting markedly. Rooting was still further improved if 2 percent of sugar was combined with the indolebutyric acid treatment. 3. The high susceptibility of cuttings under mist to anthracnose disease is mentioned and the usual course of the disease described. Recommendations are suggested for reducing the incidence of this disease.

scholarly journals Acclimation of croton and hibiscus seedlings in response to the application of indobultiric acid and humic acid for rooting

Revista CERES ◽  
2015 ◽  
Vol 62 (3) ◽  
pp. 284-293 ◽  
Author(s):  
Lílian Estrela Borges Baldotto ◽  
Marihus Altoé Baldotto ◽  
Matheus Pereira Simões ◽  
Reges Rodrigues de Oliveira ◽  
Hermínia Emília Prieto Martinez ◽  
...  
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Ornamental Plants ◽  
Growth Characteristics ◽  
Similar Response ◽  
Physiological Effects ◽  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Plastic Bags ◽  
Bioactive Fraction

The vegetative propagation of ornamental plants can be accelerated by applying plant growth regulators. Amongst them, the use of auxins, plant hormones with physiological effects on cell elongation and rooting have stood out. Alternatively, the application of humic acids, bioactive fraction of soil organic matter, also results in increases in rooting cuttings of ornamental plants. The objective of this work was to study the growth characteristics and the nutritional contents of croton and hibiscus plants during acclimation of seedlings in response to different concentrations of indolebutyric acid (IBA) and humic acid (HA) applied to cuttings for rooting. The experiment was conducted in greenhouse, and the apical stem cuttings were treated with solutions with concentrations of 0, 250, 500, 1000 and 2000 mg L-1of IBA and 0, 10, 20, 30 and 40 mg L-1 of C from HA. At 45 days of rooting in carbonized rice husk, they were individually transferred to plastic bags of 2.0 dm3 containing a mixture of soil: sand: manure (2: 1: 1) as substrate. At 90 days of acclimation, the plants were collected for measurement of growth and nutritional variables. The results showed that the application of the IBA stimulates the absorption of nutrients and growth of croton cuttings and transplanted hibiscus, contributing to formation of vigorous seedlings. A similar response occurred with the application of HA in hibiscus cuttings

scholarly journals Comparison of Perlite and Peat:perlite Rooting Media for Rooting Softwood Stem Cuttings in a Subirrigation System with Minimal Mist

1999 ◽  
Vol 17 (3) ◽  
pp. 147-151
Author(s):  
Gregory J. Giroux ◽  
Brian K. Maynard ◽  
William A. Johnson
Keyword(s):  
Woody Plant ◽  
Sweet Pepper ◽  
Vaccinium Corymbosum ◽  
Stem Cuttings ◽  
Medium Ph ◽  
Rooted Cutting ◽  
Rooting Medium ◽  
Rooting Media ◽  
The Media ◽  
Acer Ginnala

Abstract Perlite and mixtures of milled sphagnum peat and perlite (1:16, 1:8, and 1:4 by vol) were compared as rooting media in a propagation system utilizing subirrigation with minimal mist for rooting softwood stem cuttings of nine woody plant species. The influence of rooting medium on percentage rooting, number of roots per rooted cutting, and length of the longest roots on each cutting varied with species. Composition of the media had no effect on percentage of cuttings that rooted, number of roots per rooted cutting, or length of the longest root of ‘Late Blue’ highbush blueberry (Vaccinium corymbosum L. ‘Late Blue’). Cuttings of Amur maple (Acer ginnala Maxim.) and ‘Ruby Spice’ sweet pepper bush (Clethra alnifolia L. ‘Ruby Spice’) produced the longest root in 1:4 peat:perlite, and cuttings of ‘Ruby Spice’ sweet pepper bush produced the greatest number of roots in 1:8 peat: perlite. Cuttings of redvein enkianthus [Enkianthus campanulatus (Miq.) Nichols] produced more roots in 1:8 peat:perlite than in perlite, and longer roots in 1:16 and 1:8 peat: perlite than in perlite. The number of roots per cutting of ginkgo (Ginkgo biloba L.) was greatest in 1:16 peat: perlite. Cuttings of Carolina silverbell (Halesia carolina L.) rooted in the greatest percentage in perlite, and cuttings of panicle hydrangea (Hydrangea paniculata Sieb.) rooted in the greatest percentages in perlite and 1:8 peat: perlite. The number of roots per cutting of ‘Kwanzan’ cherry and ‘Shasta’ doublefile viburnum [Viburnum plicatum Thunb.var. tomentosum (Thunb.) Rehd. ‘Shasta’] was greatest in 1:16 and 1:8 peat: perlite. Root length per cutting of ‘Kwanzan’ cherry (Prunus serrulata Lindl. ‘Kwanzan’) increased with an increase in the amount of peat in the medium. Rooting medium pH decreased and moisture content increased as the amount of peat in the media increased from 1:16 to 1:8 to 1:4 (peat:perlite, by vol).

scholarly journals Rooting Softwood Cuttings of Leyland Cypress Outdoors Under Shade

2006 ◽  
Vol 24 (3) ◽  
pp. 124-128
Author(s):  
L. Eric Hinesley ◽  
Frank A. Blazich ◽  
Scott A. Derby
Keyword(s):  
Controlled Release ◽  
Stem Cuttings ◽  
Root Mass ◽  
Indolebutyric Acid ◽  
Rooted Cuttings ◽  
Controlled Release Fertilizer ◽  
Auxin Concentration ◽  
Additional Improvement ◽  
Substrate Fertility

Abstract Stem cuttings of Leyland cypress [x Cupressocyparis leylandii (A.B. Jacks. & Dallim.) Dallim. & A.B. Jacks], were rooted to determine the effect of A) date of collection, rooting substrate, and mist frequency, B) auxin formulation and concentration, C) rooting substrate, D) substrate fertility, and E) type of cutting and auxin concentration. Results were best for misting intervals of 5 to 7 min during the day, but 10 min was also adequate. Rooting was comparable for softwood cuttings collected in late May or late June. Powder and liquid auxin formulations, which both contained indolebutyric acid (IBA), yielded similar results. Cuttings that were more lignified (light tan color) at the bases benefited the most from higher concentrations [≈ 8000 ppm (0.8%)] of IBA in talc, whereas less mature cuttings (green at the bases) rooted in highest percentages with lower concentrations [≈ 3000 ppm (0.3%)]. Rooting was similar in substrates with a peat:perlite ratio (v/v) of 1:1, 1:2, or 1:4, whereas results were less satisfactory in 100% perlite. Controlled release fertilizer [1.8 kg/m3 (4 lb/yd3)] in the rooting substrate did not affect rooting percent, but greatly increased root mass and quality of rooted cuttings. Doubling the rate resulted in little additional improvement. Rooting was comparable for vigorous side shoots (1st-order laterals) and tips from vigorous upright branches (primary axes) of similar maturity.

scholarly journals Propagation of Castanopsis sclerophylla by Stem Cuttings

2003 ◽  
Vol 21 (2) ◽  
pp. 61-63
Author(s):  
Peter J. Conden ◽  
Frank A. Blazich
Keyword(s):  
Isopropyl Alcohol ◽  
Free Acid ◽  
Growth Stages ◽  
Distilled Water ◽  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Overwinter Survival

Abstract Two experiments were conducted to develop a protocol for propagation of Castanopsis sclerophylla (Lindley & Paxton) Schottky by stem cuttings. In the first experiment completed in 2000, stem cuttings were taken on three dates representing three growth stages (softwood, semi-hardwood, or hardwood). Semi-hardwood and hardwood cuttings were treated with 0, 2500 (0.25%), 5000 (0.5%), 7500 (0.75%), or 10,000 (1.0%) ppm of the free acid of indolebutyric acid (IBA) dissolved in 50% isopropyl alcohol, whereas softwood cuttings were treated with the same concentrations of the potassium (K) salt of IBA (K-IBA) dissolved in distilled water. Cuttings were placed in a raised greenhouse bench and rooted under intermittent mist. Cuttings taken at the semi-hardwood and hardwood stages began to drop their leaves after approximately 2 weeks and the majority eventually died, with negligible rooting of surviving cuttings. The response of the softwood cuttings to K-IBA was quadratic with the greatest rooting (63%) at 7500 ppm K-IBA. Seventy softwood cuttings that rooted were potted for observance of overwinter survival. Of these, 90% produced a flush of growth during the summer, with 80% overwinter survival. In the second experiment conducted in 2001, semi-hardwood cuttings were taken and treated with 0, 2500 (0.25%), 5000 (0.5%), 7500 (0.75%), or 10,000 (1.0%) ppm K-IBA and placed in a raised greenhouse bench with intermittent mist for rooting as in the first experiment. Results were similar to the semi-hardwood cuttings treated in the first experiment with the free acid of IBA, indicating semi-hardwood cuttings do not root and that the auxin and/or isopropyl alcohol were not toxic to the cuttings.

scholarly journals Propagation of Rhododendron chapmanii by Stem Cuttings

1985 ◽  
Vol 3 (2) ◽  
pp. 65-68
Author(s):  
William H. Gensel ◽  
Frank A. Blazich
Keyword(s):  
Native Plants ◽  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Distinct Root

Two experiments were conducted to determine the feasibility of propagating Chapman's rhododendron (Rhododendron chapmanii A. Gray) by rooting stem cuttings. In the first experiment, semi-hardwood terminal cuttings taken from native plants, rooted in moderate percentages (43 to 63%) with the percentage of commercially acceptable cuttings (cuttings having a distinct root ball) being less (22 to 53%). The second experiment used hardwood terminal and subterminal cuttings taken from containerized stock plants that originated from cuttings rooted in the first experiment. Percent rooting for total and commercially acceptable cuttings ranged from 81 to 94% and 39 to 64%, respectively. For both experiments, indolebutyric acid (IBA) treatments resulted in an increase in the percentage of commercially acceptable cuttings.

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