scholarly journals Medium Temperature Influences the Rooting Response of Hibiscus rosa-sinensis L.

1989 ◽  
Vol 7 (4) ◽  
pp. 143-146
Author(s):  
William J. Carpenter
Keyword(s):  
Root Formation ◽  
Adventitious Rooting ◽  
Stem Cuttings ◽  
Medium Temperature ◽  
Hibiscus Rosa Sinensis ◽  
Best Response ◽  
Propagation Medium ◽  
Rooting Response

Abstract Adventitious rooting of stem cuttings of Hibiscus rosa-sinensis L. ‘Pink Versicolor’, ‘Brilliant Red’, ‘Jim Hendry’ and ‘Silver Anniversary’ was evaluated after propagation at medium temperatures of 18°, 22°, 26°, 30° and 34°C (65°,72°,79°,86° and 93°F). Cuttings of all cultivars propagated at medium temperatures of 26° and 30°C rooted faster and developed more roots with larger fresh and dry weights. Rooting percentages for each cultivar was similar among all propagation medium temperatures, but 26° and 30°C (79° and 86°F) reduced the weeks required for rooting 50% of the cuttings and periods in weeks between 10% and 90% rooting. The most vigorous rooting ‘Pink Versicolor’ had more uniform root emergence and the best response at unfavorable medium temperatures, while the poorest ‘Silver Anniversary’ had inconsistent root formation at all temperatures.

scholarly journals Effects of Auxin Concentration and Medium Temperature on Four Woody Plant Taxa Propagated by Stem Cuttings using Recirculating Subirrigation in a Growth Chamber

2003 ◽  
Vol 21 (3) ◽  
pp. 126-130
Author(s):  
James S. Owen ◽  
William A. Johnson ◽  
Brian K. Maynard
Keyword(s):  
Root Formation ◽  
Woody Plant ◽  
Adventitious Root Formation ◽  
Stem Cuttings ◽  
Root Number ◽  
Medium Temperature ◽  
Root Numbers ◽  
Auxin Treatment ◽  
Auxin Concentration ◽  
Propagation Medium

Abstract Four woody plant taxa (‘Sparkleberry’ holly, ‘Mariesii’ viburnum, ‘Shasta’ viburnum, and Red Sunset® maple) were propagated from softwood stem cuttings in a recirculating subirrigation propagation system to evaluate the effect on adventitious root formation of three auxin (Dip-n-Grow®) concentrations [0 (water), 20: 1, or 10: 1] and three medium temperatures [20C (68F), 23C (74F), or 26C (79F)]. All taxa showed a positive rooting response to auxin treatment. Compared to cuttings treated with water, root number of all taxa doubled when treated with the highest auxin concentration (10: 1 Dip-n-Grow® dilution). Length of the longest root of rooted cuttings increased with auxin treatment of two taxa. Medium temperature also affected rooting of all taxa. The intermediate temperature evaluated, 23C (74F), was optimal for all rooting parameters on cuttings of ‘Mariesii’ viburnum, and for root length and percentage rooting on cuttings of ‘Shasta’ viburnum and Red Sunset® maple. A propagation medium temperature of 26C (79F) resulted in the greatest root number on cuttings of ‘Shasta’ viburnum, while 20C (68F) was optimal for root number on cuttings of Red Sunset® maple. Root numbers on cuttings of ‘Mariesii’ viburnum were reduced at 20C (68F) and 26C (79F), which appeared to be sub-and supra-optimal temperatures, respectively, for root initiation. All rooting parameters on cuttings of ‘Sparkleberry’ holly increased with propagation medium temperature. Temperature-auxin interactions were apparent for root number and length on cuttings of ‘Mariesii’ and ‘Shasta’ viburnum. The recirculating subirrigation system was useful for evaluating the basal temperature and auxin dose interactions and was effective for rooting softwood stem cuttings without intermittent mist irrigation.

scholarly journals Auxin, Wounding, and Propagation Medium Affect Rooting Response of Stem Cuttings of Arbutus andrachne

HortScience ◽  
2001 ◽  
Vol 36 (5) ◽  
pp. 976-978 ◽  
Author(s):  
Mohammed M. Al-Salem ◽  
Nabila S. Karam
Keyword(s):  
Root Formation ◽  
Adventitious Root Formation ◽  
Chemical Form ◽  
Naphthaleneacetic Acid ◽  
Stem Cuttings ◽  
Acid Form ◽  
Root Number ◽  
Propagation Medium ◽  
Salt Forms ◽  
Rooting Response

Stem cuttings of Arbutus andrachne L. were taken from basal or terminal portions of branches in October and treated with acid or salt forms of IBA or NAA at several concentrations. Also, the effects of wounding and propagation medium were assessed. Auxin was necessary for root formation, IBA acid being most effective. In general, salt forms of IBA and NAA were less effective than acid forms. Concentration of auxin had a significant effect on rooting regardless of auxin type or chemical form. The greatest rooting percentage, root number, length, and fresh and dry weights were exhibited by basal cuttings treated with 24 mm IBA. Position of the cutting on the branch did not affect rooting except when the IBA acid form was used; basal cuttings were then superior to terminal ones. Wounding, by making two opposite longitudinal incisions at the base of the cutting, increased rooting. The propagation medium had a significant effect on adventitious root formation, which was enhanced with increasing perlite percentage in the medium up to 100%. Chemical names used:1H-indole-3-butyric acid (IBA); α-naphthaleneacetic acid (NAA).

scholarly journals Adventitious rooting on the Brazilian red-cloak and sanchezia after application of indole-butyric and humic acids

2014 ◽  
Vol 32 (4) ◽  
pp. 434-439 ◽  
Author(s):  
Lílian EB Baldotto ◽  
Marihus A Baldotto
Keyword(s):  
Humic Acids ◽  
Dry Matter ◽  
Root Formation ◽  
Ornamental Plants ◽  
Adventitious Rooting ◽  
Dry Matter Accumulation ◽  
Regression Equations ◽  
Stem Cuttings ◽  
Indole Butyric Acid ◽  
Number Of Leaves

Plant regulators, as well as bioactive fractions of the organic matter, can accelerate the development and increase the efficiency of adventitious rooting in ornamental plants. We evaluated rooting in the Brazilian red-cloak (Megaskepasma erythrochlamys) and sanchezia (Sanchezia nobilis) cuttings in response to application of indole-butyric acid (IBA) and humic acids (HA). Stem cuttings of both species treated with solutions of 0, 250, 500, 1000, 2000 mg/L of IBA and 0, 10, 20, 30, 40 mmol/L of C of HA were placed in 2.0 L plastic pots containing carbonized rice husk, kept in greenhouse. Survival of cuttings, number of leaves and shoot and root fresh and dry matter were evaluated 45 days after. Data were used to run an analysis of variance. We observed the average contrasts, calculated the regression equations and estimated the concentrations that provided the best efficiency in terms of root dry matter. For IBA, 185.4 and 66.8 mg/L were the concentrations that promoted the highest root dry matter accumulation in the Brazilian red-cloak and sanchezia, respectively, with increments of 140 and 22.5% in relation to the control. HA, at 33.6 mmol L-1 of C, increased shoot fresh and dry matter in the Brazilian red-cloak, but reduced root formation compared to the control. In sanchezia, HA at 19.5 mmol L-1 of C promoted increases of 35.9% in root dry matter in relation to the control. We concluded that IBA, in the abovementioned concentrations, increased adventitious rooting in cuttings of both the Brazilian red-cloak and sanchezia, while optimal doses of HA solutions are very likely to improve adventitious rooting in sanchezia, but not in the Brazilian red-cloak.

scholarly journals Vegetative Propagation of Mountain Fly Honeysuckle (Lonicera villosa) by Overhead Mist and Subirrigation

HortScience ◽  
2019 ◽  
Vol 54 (5) ◽  
pp. 916-919
Author(s):  
Darren J. Hayes ◽  
Bryan J. Peterson
Keyword(s):  
Root Formation ◽  
Dry Weight ◽  
Adventitious Root Formation ◽  
Organic Soils ◽  
Stem Cuttings ◽  
System Quality ◽  
Root Tips ◽  
Root Volume ◽  
Root Dry Weight ◽  
Propagation Medium

We assessed adventitious root formation on stem cuttings of mountain fly honeysuckle [Lonicera villosa (Michx.) Schult.] in separate experiments using overhead mist and subirrigation systems. The concentration of applied potassium salt of indole-3-butyric acid (K-IBA) and the proportions of coarse perlite and milled peatmoss in the propagation medium were varied within both systems. Across treatments, 98% of cuttings in the overhead mist system and 85% of cuttings in the subirrigation system produced roots. In the overhead mist system, root volume, root dry weight, and number of root tips were greatest among cuttings treated with 4000 to 12,000 mg·L−1 K-IBA and stuck into 100% perlite. In the subirrigation system, root dry weight was not significantly affected by K-IBA concentration, but the greatest root volume and number of root tips were produced by cuttings treated with 8000 or 12,000 mg·L−1 K-IBA and stuck into 100% perlite. Despite the natural affinity of mountain fly honeysuckle for moist, organic soils, all of the 18 rooted cuttings we planted in a landscape trial survived and grew appreciably with minimal care over 2 years in a mineral field soil. We conclude that cuttings of mountain fly honeysuckle can be propagated readily by overhead mist or subirrigation, that root system quality is improved substantially by increasing K-IBA concentration and using coarse perlite without peatmoss, and that mountain fly honeysuckle can be grown in typical horticultural landscapes.

scholarly journals Production and Rooting of Shoots Generated from Dormant Stem Sections of Maple Species

HortScience ◽  
1997 ◽  
Vol 32 (7) ◽  
pp. 1274-1275 ◽  
Author(s):  
Paul H. Henry ◽  
John E. Preece
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Acer Rubrum ◽  
Adventitious Rooting ◽  
Study Data ◽  
Stem Cuttings ◽  
Red Maple ◽  
Significant Variability ◽  
Rooting Response ◽  
Number Of Shoots

Vegetative shoots were forced in the greenhouse from excised stem (branch) sections of dormant Japanese maple (Acer palmatum Thunb.), red maple (Acer rubrum L.), and sugar maple (Acer saccharum Marsh.). Softwood shoots generated in this way were used as stem cuttings in a subsequent adventitious rooting study. Data indicate that maple shoots can be forced using this technique, but that both the percentage of stem sections forming shoots and the number of shoots produced are highly variable among both species and clones. Whereas Japanese and red maple formed shoots on >50% of stem sections, shoots were generated on only 20% of sugar maple stem sections. Significant variability was also observed in rooting response, with red maple shoots rooting at much higher percentages (60%) than either Japanese maple (26%) or sugar maple (15%).

scholarly journals Mist Level Influences Vapor Pressure Deficit and Gas Exchange During Rooting of Juvenile Stem Cuttings of Loblolly Pine

HortScience ◽  
2005 ◽  
Vol 40 (5) ◽  
pp. 1448-1456 ◽  
Author(s):  
Anthony V. LeBude ◽  
Barry Goldfarb ◽  
Frank A. Blazich ◽  
John Frampton ◽  
Farrell C. Wise
Keyword(s):  
Vapor Pressure ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Vapor Pressure Deficit ◽  
Root Formation ◽  
Net Photosynthesis ◽  
Adventitious Rooting ◽  
Adventitious Root Formation ◽  
Stem Cuttings ◽  
Ambient Conditions

Two experiments were conducted during which juvenile hardwood or softwood stem cuttings of loblolly pine (Pinus taeda L.) were rooted under six mist regimes in a polyethylene-covered greenhouse to investigate the effect of mist level on vapor pressure deficit (VPD) and cutting water potential (Ψcut), and to determine the relationships between these variables and rooting percentage. In addition, net photosynthesis at ambient conditions (Aambient) and stomatal conductance (gs) were measured in stem cuttings during adventitious root formation to determine their relationship to rooting percentage. Hardwood stem cuttings rooted ≥80% when mean daily VPD between 1000 and 1800 hr ranged from 0.60 to 0.85 kPa. Although rooting percentage was related to Ψcut, and Aambient was related to Ψcut, rooting percentage of softwood stem cuttings was not related to Aambient of stem cuttings. Using VPD as a control mechanism for mist application during adventitious rooting of stem cuttings of loblolly pine might increase rooting percentages across a variety of rooting environments.

scholarly journals Propagation Medium Moisture Level Influences Adventitious Rooting of Woody Stem Cuttings

1991 ◽  
Vol 116 (4) ◽  
pp. 632-636 ◽  
Author(s):  
William H. Rein ◽  
Robert D. Wright ◽  
John R. Seiler
Keyword(s):  
Water Uptake ◽  
Dry Weight ◽  
Adventitious Rooting ◽  
Moisture Level ◽  
Stem Cuttings ◽  
Stock Plant ◽  
Xylem Water Potential ◽  
Basal Rot ◽  
Species Incidence ◽  
Propagation Medium

Stem cuttings of Blue Rug juniper (Juniperus horizontalis Moench `Wiltonii'), `Hino-Crimson' azalea [Rhododendron (Lindl.) P1anch `Hino-Crimson'], and `Helleri' holly (Ilex crenata Thunb. `Helleri') were propagated in 1 peat: 1 perlite (v/v) at one of five moisture levels based on medium dry weight (125%, 250%, 375%, 500%, or 625%). Cutting survival and percentage of rooted cuttings were highest at the highest medium moisture level in all three species. Incidence of cutting basal rot was not directly related to medium moisture level, but more to the growth stage of the stock plant. Midday xylem water potential (ψ) of cuttings for each species was highest in the wettest propagation medium and lowest in the driest medium. During propagation, stem cutting ψ below - 2.0 MPa occurred even in the wettest medium tested, and frequently reached - 4.0 MPa in cuttings in the driest treatment (125%). Basal water uptake by cuttings was highest in the wettest medium moisture level. Water uptake was highest during the first few days after insertion, and thereafter decreased until root emergence.

scholarly journals Auxin Application Duration and Concentration Govern Rooting of Hibiscus Stem Cuttings

1992 ◽  
Vol 117 (1) ◽  
pp. 68-74 ◽  
Author(s):  
W.J. Carpenter ◽  
J.A. Cornell
Keyword(s):  
Butyric Acid ◽  
Root Development ◽  
Stem Cuttings ◽  
Duration Of Treatment ◽  
Medium Temperature ◽  
Propagation Medium

The interactions among IBA concentrations and durations of treatment and propagation medium temperatures on the rooting of stem cuttings were compared for cultivars of Hibiscus rosa-sinensk L. Cultivar rooting was rapid with extensive root development for `Pink Versicolor', average for `Jim Hendry', and slow with few roots per cutting for `Silver Anniversary'. The IBA concentration and duration of treatment that cuttings required to reach maximum rooting declined with increase in medium temperature (from 18 to 34C). `Pink Versicolor' stem cuttings receiving 4- to 6-minute basal dips required 8000 ppm IBA with the medium at 18C, 6000 ppm at 26C, and 2500 ppm at 34C, to achieve 100% rooting of the cuttings. `Pink Versicolor' stem cuttings had the most roots at 10,000 ppm IBA, with 10-min stem dips best at 18C, 4 to 8 min at 26C, and 7 to 8 min at 34C. Maximum dry weights per root were achieved at 6000 ppm IBA, with longer basal stem dip durations needed at 18C than 26 or 34C. Lower IBA levels were required for 100% rooting of `Pink Versicolor' than for `Jim Hendry', with highest levels needed for `Silver Anniversary'. The results indicated that the benefits in rooting achieved from higher IBA levels greatly exceeded those that could be achieved by increased medium temperature. Chemical name used: indole-3-butyric acid (IBA).

scholarly journals Adventitious rooting in cuttings of croton and hibiscus in response to indolbutyric acid and humic acid

Revista CERES ◽  
2012 ◽  
Vol 59 (4) ◽  
pp. 476-483 ◽  
Author(s):  
Lílian Estrela Borges Baldotto ◽  
Marihus Altoé Baldotto ◽  
Raíssa Rezende Soares ◽  
Herminia Emilia Prieto Martinez ◽  
Vitor Hugo Alvarez Venegas
Keyword(s):  
Humic Acid ◽  
Dry Matter ◽  
Ornamental Plants ◽  
Adventitious Rooting ◽  
Rice Hull ◽  
Maximum Efficiency ◽  
Regression Equations ◽  
Stem Cuttings ◽  
Root Area ◽  
Hibiscus Rosa Sinensis

Adventitious rooting of ornamental plants can be accelerated by the application of growth regulators, such as auxin. Humic acids, organic matter in soil and organic compounds also have a biostimulant effect. This work evaluated the rooting in cuttings of croton (Codianeum variegatum L. Rumph) and hibiscus (Hibiscus rosa-sinensis L) in response to the application of different concentrations of indolbutyric acid (IBA) and humic acid (HA). The experiment was carried out in a greenhouse. Apical stem cuttings were treated with solutions at concentrations of: 0, 250, 500, 1000, 2000 mg L-1 IBA and 0, 10, 20, 30, 40 mmol L-1 HA carbon isolated from vermicomposting. Forty-five days after the applications, the cuttings were removed from the pots containing carbonized rice hull and the following variables were measured: rooting number, length and width of leaves, fresh and dry matter of root and aerial part and root area. The results were subjected to analysis of variance and the qualitative and quantitative effects of the treatments were compared by contrast and regression, respectively. Regression equations were used to determine the maximum efficiency level of root dry matter according to IBA and HA. Higher accumulation of root dry matter was recorded for the treatments with the doses 579 mg L-1 IBA and 14 mmol L-1 HA and 970 mg L-1 IBA and 50 mmol L-1 HA for root cuttings of croton and hibiscus, respectively. It was found that the application of eiher IBA or HA at the indicated doses accelerates rooting in cuttings of croton and hibiscus and contributes to the formation of vigorous plants.

scholarly journals Nitrogen Nutrition of Containerized Eastern Redcedar. II. Influence of Stock Plant Fertility on Adventitious Rooting of Stem Cuttings

1992 ◽  
Vol 117 (4) ◽  
pp. 568-570 ◽  
Author(s):  
Paul H. Henry ◽  
Frank A. Blazich ◽  
L. Eric Hinesley
Keyword(s):  
Nitrogen Nutrition ◽  
Adventitious Rooting ◽  
N Fertilization ◽  
Juniperus Virginiana ◽  
Stem Cuttings ◽  
Stock Plant ◽  
Eastern Redcedar ◽  
N Level ◽  
Foliar N ◽  
Rooting Response

Hardwood stem cuttings of eastern redcedar (Juniperus virginiana L.), taken from containerized stock plants fertilized weekly with 0, 5, 10, 20, 40, 80, 160, 320, or 640 ppm N, were treated with 7500 ppm IBA and placed under intermittent mist for 12 weeks. Foliar starch and sucrose concentrations within cuttings at time of excision were significantly correlated with percent rooting and root length, respectively. Of the mineral nutrients analyzed (N, P, K, Ca, Mg, Mn, and B), only B and K were significantly correlated with rooting response. A threshold N level (20 ppm), applied weekly, maximized rooting; higher concentrations decreased response. Although N fertilization of stock plants affected adventitious rooting, there were no significant correlations between foliar N levels and measures of rooting response. Chemical name used: 1 H- indole-3-butyric acid (IBA).

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