Propagation of Abiesfraseri by softwood stem cuttings

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.

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Response of Micropropagated Apple Trees to Field Establishment Procedures

HortScience ◽

10.21273/hortsci.26.11.1364 ◽

1991 ◽

Vol 26 (11) ◽

pp. 1364-1365 ◽

Cited By ~ 1

Author(s):

Richard H. Zimmerman

Keyword(s):

Cold Storage ◽

Vegetative Growth ◽

Shoot Growth ◽

Cultural Practices ◽

Growing Season ◽

First Year ◽

Sectional Area ◽

Apple Trees ◽

Cross Sectional ◽

Terminal Shoot

Growth, flowering, and fruiting of micropropagated `Jonathan' apple trees (Malus domestica Borkh.) transferred in Spring 1983 to the field from either a nursery, cold storage, or greenhouse were compared. First-year shoot and trunk growth was greatest for trees transplanted from the nursery and least for trees that were held in the greenhouse before being transferred to the field. Trees pruned low (35 cm) at planting time had more terminal shoot growth and less trunk cross-sectional area after the first growing season than those pruned high (90 cm). The effect of preplanting cultural practices on vegetative growth diminished in the 2nd year and disappeared by the end of the 3rd year in the orchard. Flowering began in 1985 and was only slightly affected by preplanting cultural practices and pruning treatments. Fruiting was not affected by the treatments.

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

Canadian Journal of Plant Science ◽

10.4141/p01-176 ◽

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

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

HortScience ◽

10.21273/hortsci.40.4.1001a ◽

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.

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Manual and Chemical Branch Inducement in Fall- and Spring-planted `Empire' Apple on Two Rootstocks

HortScience ◽

10.21273/hortsci.31.1.82 ◽

1996 ◽

Vol 31 (1) ◽

pp. 82-88 ◽

Cited By ~ 3

Author(s):

David R. Ouellette ◽

C.R. Unrath ◽

Eric Young

Keyword(s):

North Carolina ◽

Shoot Growth ◽

Leaf Removal ◽

Current Season ◽

Mountain Site ◽

Lateral Bud ◽

Second Year ◽

Terminal Shoot ◽

One Year ◽

Thin Band

One-year-old unbranched `Empire' apple (Malus domestica Borkh.) trees on Malling 26 EMLA and Malling–Merton 111 EMLA rootstocks were planted in Nov. 1991 or Mar. 1992 at an eastern Piedmont or mountain site of North Carolina. In Mar. 1992 and 1993, trees were dormant-headed and then subjected to one of five branch-inducing techniques: 1) control—untouched, 2) notching—removing a thin band of bark above each lateral bud, 3) leaf removal—periodic removal of immature apical leaves, 4) bending—placing at horizontal and setting upright in summer, or 5) renewal—setting a lateral branch upright as the new leader. The second year (1993), half of the trees were periodically sprayed with Promalin (GA4+7 + BA). At the Piedmont site, notching, leaf removal, and bending resulted in more branching than the control after 1 year. At the mountain site, leaf removal was considerably less effective in inducing branches. Bending produced asymmetric trees and, at the mountain site, considerably reduced terminal shoot growth. Planting date had little influence on branching. Two years after planting, notched trees were significantly larger and had twice as many branches as other trees. Promalin increased branching on current-season growth and, when combined with leaf removal, resulted in the most uniform distribution of branches along the length of the central leader. Using notching or Promalin produced a tree structure suitable for high-density plantings. Chemical names used: N-(phenylmethyl)-1H-purin-6-amine (BA), gibberellins A4 + A7 (GA4+7).

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

HortScience ◽

10.21273/hortsci.41.1.202 ◽

2006 ◽

Vol 41 (1) ◽

pp. 202-206 ◽

Cited By ~ 7

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.

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Propagation of Sweetgale, Rhodora, and Catberry by Stem Cuttings

HortTechnology ◽

10.21273/horttech04464-19 ◽

2020 ◽

Vol 30 (1) ◽

pp. 38-46

Author(s):

Bryan J. Peterson ◽

Gregory J.R. Melcher ◽

Ailish K. Scott ◽

Rebecca A. Tkacs ◽

Andrew J. Chase

Keyword(s):

North America ◽

Butyric Acid ◽

Root Development ◽

Vegetative Propagation ◽

Potassium Salt ◽

Eastern North America ◽

Stem Cuttings ◽

Razor Blade ◽

Myrica Gale ◽

Collection Date

Sweetgale (Myrica gale), rhodora (Rhododendron canadense), and catberry (Ilex mucronata) are shrubs of eastern North America that may have potential for broader use in horticultural landscapes. Because information on their vegetative propagation is scarce, we conducted experiments over 2 years to evaluate the effects of cutting collection date, wounding, substrate composition, and the concentration of applied potassium salt of indole-3-butyric acid (K-IBA) on rooting of each species. In 2015, we collected cuttings of each species on three dates to obtain both softwood and semihardwood cuttings. Cuttings were unwounded or wounded with a razor blade, and treated by dipping into water containing K-IBA at concentrations ranging from 0 to 15,000 mg·L−1, after which they were inserted into a substrate of 3:1 perlite:peat (by volume) and placed under intermittent mist. In 2016, semihardwood cuttings of each species were all wounded, treated with K-IBA from 0 to 15,000 mg·L−1, and inserted into substrates of 100%, 75%, or 50% perlite, with the remaining volume occupied by peat. In both years, the greatest percentage of sweetgale cuttings rooted when no K-IBA was applied. K-IBA application also reduced root ratings, root dry weights, and root lengths of sweetgale. For rhodora and catberry, maximal responses for all measures of rooting occurred when 5000 to 15,000 mg·L−1 K-IBA was applied. We recommend that growers use no exogenous auxin to propagate sweetgale, and 5000 to 10,000 mg·L−1 K-IBA to propagate rhodora and catberry. Cuttings of all three species can be collected from softwood or semihardwood shoots. Finally, sweetgale can be rooted in perlite alone, whereas rhodora and catberry required the addition of peatmoss for satisfactory root development.

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Herbicide Effects on Weed Control and Shoot Growth of Young Apple (Malus sylvestris) and Peach (Prunus persica) Trees

Weed Technology ◽

10.1017/s0890037x00028785 ◽

1994 ◽

Vol 8 (4) ◽

pp. 840-848 ◽

Cited By ~ 2

Author(s):

Chester L. Foy ◽

Susan B. Harrison ◽

Harold L. Witt

Keyword(s):

Shoot Growth ◽

Field Experiments ◽

Prunus Persica ◽

Weed Species ◽

Apple Trees ◽

Herbicide Treatments ◽

One Year ◽

Broadleaf Species ◽

Old Trees ◽

Peach Trees

Field experiments were conducted at two locations in Virginia to evaluate the following herbicides: alachlor, diphenamid, diuron, metolachlor, napropamide, norflurazon, oryzalin, oxyfluorfen, paraquat, pendimethalin, and simazine. One experiment involved newly-transplanted apple trees; the others, three in apple and one in peach trees, involved one-year-old trees. Treatments were applied in the spring (mid-April to early-May). Control of annual weed species was excellent with several treatments. A broader spectrum of weeds was controlled in several instances when the preemergence herbicides were used in combinations. Perennial species, particularly broadleaf species and johnsongrass, were released when annual species were suppressed by the herbicides. A rye cover crop in nontreated plots suppressed the growth of weeds. New shoot growth of newly-transplanted apple trees was increased with 3 of 20 herbicide treatments and scion circumference was increased with 11 of 20 herbicide treatments compared to the nontreated control. Growth of one-year-old apple trees was not affected. Scion circumference of one-year-old peach trees was increased with 25 of 33 herbicide treatments.

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Effects of Shading on Carbohydrates of Syzygium samarangense

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha47411637 ◽

2019 ◽

Vol 47 (4) ◽

pp. 1252-1257

Author(s):

Ying JIAN ◽

Guolin WU ◽

Donghui ZHOU ◽

Zhiqun HU ◽

Zhenxuan QUAN ◽

...

Keyword(s):

Vegetative Growth ◽

Shoot Growth ◽

Soluble Sugar ◽

Apple Fruit ◽

Digital Object Identifier ◽

Digital Object ◽

Carbohydrate Accumulation ◽

Tropical Fruit ◽

Total Soluble Sugar ◽

Carbohydrate Levels

Wax apple (Syzygium samarangense) is an important tropical fruit tree cultivated in Southeast Asian. It produces red pear-like shape fruits. The fruit flesh is considered high in antioxidants, phenolics, and flavonoids that have a potential to contribute to the human healthy diet, and was proved to have anti-inflammatory and antimicrobial characteristics. To allow year-round marketing of high quality wax apple fruit, growers always perform shading to inhibit new flushes so as to repress vegetative growth and promote reproductive growth. To investigate the effect of shading on carbohydrates, wax apple trees were shaded with sun shade nets under field conditions. The effects of shading on shoot growth were studied and leaf carbohydrate levels of the trees were determined. The results showed that shading inhibit the the growth of the terminal shoots and promoted bud dormancy. Shading also reduced total soluble sugar, sucrose, glucose, fructose, and starch levels of leaves. The results suggested that shading reduced carbohydrate accumulation and repressed vegetative growth. ********* In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 4, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue. *********

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Submist is Effective for Propagation of Korean Lilac and Inkberry by Stem Cuttings

HortTechnology ◽

10.21273/horttech03970-18 ◽

2018 ◽

Vol 28 (3) ◽

pp. 378-381

Author(s):

Bryan J. Peterson ◽

Stephanie E. Burnett ◽

Olivia Sanchez

Keyword(s):

Butyric Acid ◽

Woody Plants ◽

Root Biomass ◽

Potassium Salt ◽

Foliar Nutrients ◽

Stem Cuttings ◽

Rooted Cuttings ◽

Soilless Substrate

Although overhead mist revolutionized the propagation industry, it does suffer from potential drawbacks that include the application of large volumes of water, potentially unsanitary conditions, irregular misting coverage, and leaching of foliar nutrients. We explored the feasibility of submist as an alternative as it might avoid these problems by applying water exclusively from below the cutting, which is inserted basally into an enclosed rooting chamber. We propagated cuttings of korean lilac (Syringa pubescens ssp. patula) and inkberry (Ilex glabra) using both overhead mist and submist to compare effectiveness of the systems. Cuttings of korean lilac were wounded and dipped basally into 8000 mg·L−1 of the potassium salt of indole-3-butyric acid (K-IBA), and those in the overhead mist systems were inserted into coarse perlite. Cuttings of inkberry were wounded and treated with 5000 mg·L−1 K-IBA, and those in the overhead mist systems were inserted into 50:50 peat:perlite (by vol). Cuttings of korean lilac in the submist systems produced more than twice as many roots as cuttings in the overhead mist systems, with roots more than 2.6 times the length. Similarly, cuttings of inkberry in the submist systems produced more than three times the root counts and root lengths as cuttings in the overhead mist systems. For korean lilac, root dry weights averaged 58 mg for cuttings in the submist system, compared with only 18 mg among cuttings receiving overhead mist. Likewise, root dry weights averaged 70 and 7 mg for cuttings of inkberry propagated by submist and overhead mist, respectively. Rooted cuttings of korean lilac transplanted well into a soilless substrate, where they more than tripled their root biomass to 218 mg (vs. 59 mg for cuttings transplanted from overhead mist). We did not evaluate transplant performance of inkberry. Our results show that submist systems might merit consideration for the propagation of woody plants by leafy stem cuttings.

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Shooting of giant reed (Arundo donax L.) stem cuttings in cold greenhouse

International Journal of Plant Biology ◽

10.4081/pb.2016.6294 ◽

2016 ◽

Vol 7 (1) ◽

Cited By ~ 2

Author(s):

Piergiorgio Gherbin ◽

Simone Milan ◽

Giuseppe Mercurio ◽

Antonio Scopa

Keyword(s):

Arundo Donax ◽

Stem Cutting ◽

Giant Reed ◽

Stem Cuttings ◽

Mother Plants ◽

Propagation Methods ◽

One Year ◽

Arundo Donax L

The increasing interest in<em> Arundo donax,</em> a perennial lignocellulosic species only reproducing by propagation, requires the setup of cheap, simple and reliable techniques. Considering these targets, stem cutting offers considerable advantages. The present investigation aimed to compare: i) plants obtained by different propagation methods (by rhizome and micropropagation mother plants); ii) plants obtained by stem cuttings from basal, central and apical parts of the stem; iii) different planting periods (spring, summer, autumn). The obtained results showed that the number of new shoots from stem buds was: i) higher in the spring and lower in the summer planting period; ii) higher from cuttings obtained by micropropagated than rhizome mother plants, both in spring and summer plantings; iii) decreasing passing from the basal to the apical stem portion; iv) partly unexpressed in the autumn planting period; v) lower from one-year stem cuttings as compared to two-year stem cuttings.

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