scholarly journals Propagation of Twelve Alaska Native Plants by Summer Stem Cuttings

2009 ◽  
Vol 27 (4) ◽  
pp. 207-210
Author(s):  
Patricia S. Holloway ◽  
Mia R. Peterburs
Keyword(s):  
Alaska Native ◽  
Native Plants ◽  
Stem Cuttings ◽  
Populus Balsamifera ◽  
Alnus Viridis ◽  
Dwarf Birch ◽  
Labrador Tea ◽  
Bottom Heat ◽  
Salix Bebbiana ◽  
Collection Date

Abstract Twelve Alaska native plants were propagated from softwood and semi-hardwood stem cuttings collected from late June through August. Cuttings of new growth were treated with 0.3% indole-3-butyric acid powder and propagated in horticultural grade perlite and vermiculite (1:1 by vol) under intermittent mist with bottom heat [26C (79F)] in a greenhouse with a minimum night temperature of 15C (59F). After 6 weeks, cuttings were harvested and evaluated for rooting percentage and root quantity. Four species rooted poorly (< 25%) regardless of collection date: Siberian alder (Alnus viridis ssp. fruticosa), silverberry (Elaeagnus commutata), Bebb willow (Salix bebbiana) and shrub birch (Betula glandulosa). Best rooting (> 80%) occurred June 20 for: Beauverd spiraea (Spiraea stevenii), sweetgale (Myrica gale), and thinleaf alder (Alnus incana ssp. tenuifolia). Peak rooting for dwarf birch (Betula nana), feltleaf willow (Salix alaxensis), balsam poplar (Populus balsamifera), Labrador tea (Ledum groenlandicum) and littletree willow (Salix arbusculoides) was early to mid July. During peak rooting times, all successful species developed adequate root quantities for survival following transplanting.

scholarly journals Propagation of Maackia amurensis Rupr. & Maxim, by Softwood Cuttings

1994 ◽  
Vol 12 (3) ◽  
pp. 147-149
Author(s):  
Steve McNamara ◽  
William R. Graves ◽  
Harold Pellett
Keyword(s):  
Developmental Stages ◽  
Root Systems ◽  
Washington Dc ◽  
Stem Cuttings ◽  
Mature Trees ◽  
Root Numbers ◽  
Maackia Amurensis ◽  
Acceptable Quality ◽  
Bottom Heat ◽  
Collection Date

Abstract Softwood terminal stem cuttings were collected at two developmental stages from twenty mature trees of Amur maackia (Maackia amurensis Rupr. and Maxim) growing in Minnesota, Maryland, and Washington DC. Cuttings were treated with either 0 or 2500 ppm (0.25%) of a potassium salt formulation of indole-3-butyric acid (K-IBA) and stuck under intermittent mist with bottom-heat. Cuttings were evaluated for rooting after 12 weeks. Cutting collection date did not affect rooting of most genotypes. Treatment with K-IBA nominally improved root rating scores and root numbers. All trees exhibited the capacity for rooting with individual rooting percentages ranging from 19% to 92%. Based upon mean visual ratings, cuttings from 14 of the 20 trees produced root systems of acceptable quality. These findings indicate that mature Maackia amurensis trees can be propagated by softwood cuttings, but refinement of the rooting protocol may be required to achieve acceptable levels of rooting for some genotypes.

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.

Trichoderma viride enhances the growth of lingonberry (Vaccinium vitis-idaea L.) stem cuttings

2003 ◽  
Vol 83 (4) ◽  
pp. 943-945
Author(s):  
T. Paal and A. Banner
Keyword(s):  
Key Words ◽  
Shoot Growth ◽  
Trichoderma Viride ◽  
Stem Cuttings ◽  
Rooting Ability ◽  
Collection Date

Stem cuttings of two lingonberry varieties, Koralle and Erntekrone, collected and planted in April, May, June and August, were tested for rooting and shoot growth in the presence of Trichoderma viride strain T-6-RC. Strain T-6-RC had a significant effect on increasing the rooting potential of the cuttings regardless of variety or collection date. However, this effect was more evident for Erntekrone, which generally had a poorer rooting ability than Koralle. Significant interactions between collection date, T-6-RC and variety were found for shoot growth and are discussed in the text. Key words: Lingonberry, fungi, propagation, soil micromycetes

Propagation of Abiesfraseri by softwood stem cuttings

1985 ◽  
Vol 15 (6) ◽  
pp. 1172-1176 ◽  
Author(s):  
Farrell C. Wise ◽  
Frank A. Blazich ◽  
L. Eric Hinesley
Keyword(s):  
Butyric Acid ◽  
Vegetative Growth ◽  
Shoot Growth ◽  
Stem Cuttings ◽  
Temporal Separation ◽  
Christmas Trees ◽  
Crown Position ◽  
Terminal Shoot ◽  
One Year ◽  
Collection Date

Effects of collection date, crown position, and indole-3-butyric acid concentration on rooting and subsequent vegetative growth of softwood cuttings taken from 14-year-old Fraser fir (Abiesfraseri (Pursh) Poir.) Christmas trees were studied. Indole-3-butyric acid levels producing maximum rooting (approximately 50%) varied with crown position and date of severance. Abaxial bending during rooting was greatest for cuttings from the first collection (June 23). Increasing indole-3-butyric acid concentrations decreased abaxial bending of cuttings from the first two severance dates. One year after rooting, plagiotropism was still most pronounced on cuttings collected the first date as a result of active bending of the original cutting segment. Terminal shoot growth was greatest for cuttings from the first and third collections. Lateral budbreak was superior on cuttings collected on the first date. When all factors are taken into consideration, the best combination of rooting and vegetative growth was obtained from upper-crown cuttings which were collected just prior to lignification, wounded, and treated with 1500 ppm indole-3-butyric acid. After one season (one growth flush), rooted softwood cuttings were comparable to 2-year-old plants (two flushes) propagated by hardwood cuttings. The temporal separation of rooting from shoot extension may have been responsible for improving initial vegetative growth.

scholarly journals (169) Root Formation on Stem Cuttings of Yellow-flowered Cultivars of Magnolia Is Influenced by Time-after-budbreak and IBA

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1001A-1001
Author(s):  
Jyotsna Sharma ◽  
Gary Knox ◽  
Maria Ishida
Keyword(s):  
Butyric Acid ◽  
Clonal Propagation ◽  
Root Formation ◽  
Growing Season ◽  
Harvest Date ◽  
Stem Cuttings ◽  
Hot Flash ◽  
Collection Date

We propagatedsixyellow-flowered cultivars of Magnolia vegetatively by applying 0, 8, 16, or 30 g·kg-1 indole-3-butyric acid (IBA) in talc to bases of terminal stem cuttings collected 5, 7, 9, or 11 weeks after budbreak. Mean rooting percentage increased from 12% (in the absence of IBA) to 34% (after applying 30 g·kg-1 IBA). Rooting percentage also increased with increasing basal caliper (r2 = 0.25; P< 0.0001) of a cutting. For each collection date, more cuttings of `Ivory Chalice' and `Yellow Lantern' developed roots than did other cultivars. When data were analyzed separately for selected cultivars, 63% rooting was observed among cuttings of `Ivory Chalice' collected 7 weeks after budbreak. Rooting percentage was higher (22%) among cuttings of `Hot Flash' collected 5 or 7 weeks after budbreak in comparison to later collection dates, but harvest date did not influence rooting, which ranged from 44% to 59%, among cuttings of `Yellow Lantern'. Collection of stem cuttings early in the growing season (5 weeks after budbreak) was beneficial (31% rooting) for inducing root formation among cuttings of `Golden Sun'. We conclude that `Ivory Chalice' and `Yellow Lantern' are promising choices for growers interested in clonal propagation of yellow-flowered cultivars of Magnolia. To maximize rooting, terminal cuttings should be collected within 5 to 11 weeks after budbreak and should be treated with 16 or 30 g·kg-1 IBA in talc. Early collection dates improved rooting frequencies among cuttings of other cultivars but these, particularly `Butterflies', remain variably recalcitrant and merit further study.

scholarly journals Adventitious Rooting of Stem Cuttings of Yellow-flowered Magnolia Cultivars is Influenced by Time after Budbreak and Indole-3-butyric Acid

HortScience ◽  
2006 ◽  
Vol 41 (1) ◽  
pp. 202-206 ◽  
Author(s):  
Jyotsna Sharma ◽  
Gary W. Knox ◽  
Maria Lucia Ishida
Keyword(s):  
Butyric Acid ◽  
Clonal Propagation ◽  
Growing Season ◽  
Adventitious Rooting ◽  
Stem Diameter ◽  
The Other ◽  
Harvest Date ◽  
Stem Cuttings ◽  
Hot Flash ◽  
Collection Date

Certain cultivars of magnolia are desirable in landscapes for their uncommon yellow flowers. While cultivars derived from Magnolia acuminata L. (cucumbertree magnolia) are difficult to propagate by stem cuttings, some with mixed parentage appear easier to propagate in this manner. We propagated six yellow-flowered cultivars vegetatively by applying 0, 8, 16, or 30 g·kg–1 (0, 8,000, 16,000, or 30,000 ppm) indole-3-butyric acid (IBA) in talc to bases of terminal stem cuttings collected 5, 7, 9, or 11 weeks after budbreak. Mean rooting percentage over all cultivars increased from 12% (in the absence of IBA) to 34% (after application of 30 g·kg–1 IBA). Rooting percentage and basal stem diameter of a cutting did not seem related. For each collection date, more cuttings of `Ivory Chalice' and `Yellow Lantern' developed roots than the other cultivars. More roots (mean = 5) developed on cuttings of `Yellow Lantern' collected 5 weeks after budbreak or when treated with 30 g·kg–1 IBA than the other cultivars. `Butterflies' largely remained unresponsive, whereas rooting of `Golden Sun,' `Hot Flash,' and `Maxine Merrill' collected 5 weeks after budbreak was 31%, 22%, and 28%, respectively. When data were analyzed separately for selected cultivars, 63% rooting was observed among cuttings of `Ivory Chalice' collected 7 weeks after budbreak. Rooting percentage was higher (22%) among cuttings of `Hot Flash' collected 5 or 7 weeks after budbreak in comparison to later collection dates, but harvest date did not influence rooting of `Yellow Lantern,' which ranged from 44% to 59%. Collection of stem cuttings early in the growing season (5 weeks after budbreak) was beneficial (31% rooting) for inducing rooting among cuttings of `Golden Sun.' We conclude that `Ivory Chalice' and `Yellow Lantern' are promising choices for growers interested in clonal propagation of yellow-flowered cultivars of magnolia. To maximize rooting among these cultivars, terminal cuttings should be collected within 5 to 11 weeks after budbreak and treated with 16 or 30 g·kg–1 IBA in talc. Early collection dates (5 to 7 weeks after budbreak) improved rooting among cuttings of other cultivars but these, particularly `Butterflies,' remain variably recalcitrant and merit further study.

scholarly journals PROPAGATION OF FIREBUSH BY STEM CUTTINGS

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 640a-640
Author(s):  
Tim D. Davis ◽  
S.W. George ◽  
A. Upadhyaya ◽  
J.M. Parsons
Keyword(s):  
Root Length ◽  
Stem Segment ◽  
Stem Cuttings ◽  
Medium Temperature ◽  
Factors Affecting ◽  
Dramatic Effect ◽  
Visual Rating ◽  
Rooting Medium ◽  
Bottom Heat ◽  
Better Than

Factors affecting the greenhouse propagation of firebush (Hamelia patens) by leafy stem cuttings during winter were studied. Without bottom heat (BH), mid-day rooting medium temperature was 22 ± 3 C. About half of the auxin-treated cuttings without BH rooted. Maintaining the rooting medium at 29-39 C increased rooting for auxin-treated cuttings to 96-100% and increased root length and visual rating scores several-fold. Rooting percentage, root length, and visual ratings were consistently high in perlite and low in peat. Stem-tip cuttings and sub-terminal stem segment cuttings with basal stem diameters of 3-5 mm rooted slightly better than stem segment cuttings with basal diameters of 6-8 mm. Stem-tip cuttings not treated with auxin but with BH had rooting percentages of 81-86%. Treatment of stem-tip cuttings with auxin generally yielded 90% rooting or above. Despite this, plants grown from auxin-treated cuttings were indistinguishable from plants grown from non-treated cuttings 2 months after the rooting period. Of the variables studied, BH had the most dramatic effect on rooting of firebush cuttings during winter months.

Vegetative propagation of sugar maple: Relating stem water content and terminal bud developmental stage to adventitious rooting of stem cuttings

2003 ◽  
Vol 83 (4) ◽  
pp. 859-867 ◽  
Author(s):  
D. Tousignant ◽  
C. Richer ◽  
J. -A. Rioux ◽  
N. Brassard ◽  
J. -P. Mottard
Keyword(s):  
Water Content ◽  
Vegetative Propagation ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Stem Cuttings ◽  
Stem Base ◽  
Stage Of Development ◽  
Terminal Bud ◽  
Stem Water ◽  
Collection Date

The objective of this study was to define the optimum period for collecting sugar maple (Acer saccharum Marsh.) stem cuttings. In 1999 and 2000, shoot development was monitored on young trees from a plantation established in 1993. Stem base water content and the number of pairs of terminal bud scales changed over time, reflecting meteorological characteristics of both years. In 1999, rooting percentage was high regardless of collection date, within a 7-wk period. The 2000 rooting trial covered a longer time frame and identified an optimal window during which rooting percentages reached 60 to 83%. Rooting success dropped below 30% for cuttings har vested too early or too late. Thus the optimal time for collecting sugar maple cuttings spans several weeks, but with significant year-to-year variations. For both years, optimal rooting was associated with a stem base water content lower than 75% but higher than 55%, and with the presence of one to three pairs of apical bud scales. This stage is reached when at least 270 degree-days above 5°C are accumulated. Using these indicators, practitioners can consider local conditions and year-to-year climatic variations to harvest sugar maple cuttings at an optimum stage of development. Key words: Acer saccharum, bud scales, collection date, cutting propagation, stem water content, vegetative propagation

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.

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