Restoration of high adventitious root regeneration potential in mature Betulapapyrifera Marsh, softwood stem cuttings

1988 ◽  
Vol 18 (2) ◽  
pp. 265-269 ◽  
Author(s):  
Daniel K. Struve ◽  
R. Daniel Lineberger
Keyword(s):  
Adventitious Root ◽  
Adventitious Shoot ◽  
Stem Cuttings ◽  
Regeneration Potential ◽  
Rooted Cuttings ◽  
Root Regeneration ◽  
Shoot Initiation ◽  
Rooting Response ◽  
Adventitious Root Regeneration ◽  
Serial Propagation

Grafted mature (flowering) Betulapapyrifera Marsh, scions were used to investigate restoration of high adventitious root regeneration potential in softwood stem cuttings. Scion manipulation (defoliation), serial propagation (using previously rooted cuttings as stock plants), hedging (severe pruning), and micropropagation were used as possible restoration treatments. Over a 15-month period, more than 8000 softwood stem cuttings were taken for propagation. Serial propagation more than doubled (from 20 to 44%) rooting response. Rooting response of tissue cultured microcuttings resulting from adventitious shoot initiation averaged 95% for 35 clones. By comparison, rooting response of open pollinated seedling families was 87% and stem cuttings from stock plants grown from tissue cultured microcuttings averaged 75%. Variation in clonal rooting response among propagation times represented a greater source of variation than that attributed to serial propagation or clone. Scion manipulation and hedging were ineffective in increasing stem cutting rooting potential. High rooting potential in mature birch can best be restored via tissue culture.

scholarly journals Red Light Controls Adventitious Root Regeneration by Modulating Hormone Homeostasis in Picea abies Seedlings

2020 ◽  
Vol 11 ◽  
Author(s):  
Sanaria Alallaq ◽  
Alok Ranjan ◽  
Federica Brunoni ◽  
Ondřej Novák ◽  
Abdellah Lakehal ◽  
...  
Keyword(s):  
Picea Abies ◽  
Adventitious Root ◽  
Red Light ◽  
Root Regeneration ◽  
Hormone Homeostasis ◽  
Adventitious Root Regeneration

scholarly journals Shoot position, cutting types and auxin treatments influence rooting response on Tecoma stans

2021 ◽  
Vol 27 (2) ◽  
pp. 213-220
Author(s):  
Bhupendra Singh ◽  
Jagmohan Singh Rawat ◽  
Yogandra Singh Gusain ◽  
Vinod Prasad Khanduri ◽  
Manoj Kumar Riyal ◽  
...  
Keyword(s):  
Growth Performance ◽  
Plant Height ◽  
Stem Cuttings ◽  
Rooted Cuttings ◽  
Rooting Ability ◽  
Survival Capacity ◽  
Mist Chamber ◽  
And Control ◽  
Rooting Response ◽  
Shoot Position

Abstract This study investiges the rooting ability and the growth performance of lower and upper shoot positions and type of the cuttings, i.e. soft and hard wood and leafy and non leafy, of Tecoma stans (L.) Kunth. The cuttings were collected from 4-year old plants growing in the Chauras Campus of H.N.B. Garhwal University Srinagar Garhwal, Uttarakhand, India. The rooting ability of cuttings was studied under the treatments of indole-3-butyric acid (IBA) and Indole 3-acidic acid (IAA) under 0.0%, 0.3%, 0.4%, 0.5% concentration in both hormones. The rooting response was significantly (p < 0.05) better in 0.4% IBA compared to other treatments and control (0% IBA and IAA). The ratio of number of roots to rooted cuttings and length of root to rooted cuttings in the different treatments showed significant differences (p < 0.05). The rooted cuttings were further transferred, into the polythene bags and shifted to open nursery conditions. Under such conditions, the rooted cuttings treated with 0.4% and 0.5% IBA demonstrated the highest (90% to 100%) survival capacity in the lower portion soft wood and leafy stem cuttings. Plantable plant and plant height was greater in the 0.4% IBA concentration treatment. The results of the study suggest that rooting of soft wood stem cuttings having lower position and leaves could be an effective mean of regenerating to T. stans. Furthermore, the application of 0.4% IBA concentration treatment is appropriate for rooting of juvenile leafy stem cuttings in a mist chamber.

scholarly journals Provenance Impacts Transplant Establishment and Adventitious Root Regeneration of Sycamore

2004 ◽  
Vol 129 (3) ◽  
pp. 360-367
Author(s):  
Larry J. Shoemake ◽  
Michael A. Arnold ◽  
Fred T. Davies
Keyword(s):  
Gas Exchange ◽  
Adventitious Root ◽  
Leaf Gas Exchange ◽  
Single Mother ◽  
Adventitious Rooting ◽  
Growth Responses ◽  
Improvement Program ◽  
Root Regeneration ◽  
Landscape Establishment ◽  
Adventitious Root Regeneration

A series of six experiments was conducted over eight years to investigate impacts of provenance on transplant establishment in landscapes and the role of adventitious root regeneration in differential genotypic responses during establishment of Platanus occidentalis L. Fall, spring, and summer transplants of container-grown half-sib families (HSF = seedlings derived from a single mother tree with unknown male parentage), including two selections native to Brazos County, Texas (Brazos-C, Brazos-D), one native to Cookeville, Tenn. (Cookeville), two Kentucky/Tennessee HSF from the Westvaco Corp. (WV-10, WV-14), and two Texas HSF from the Texas Forest Service tree improvement program (TFS-09, TFS-24), were established to determine field/landscape growth responses. Subsequent studies were conducted to investigate differential leaf gas exchange responses of TFS-09 and Cookeville during moderate water deficits and to determine root regeneration potential (RRP) responses of TFS-09, Brazos-C, WV-14, and Cookeville HSF following fall, spring, and summer transplant. To investigate consistency of within-family genotypic responses and to determine relationships among adventitious root initiation from shoot cuttings, RRP, and landscape establishment, five seedlings of TFS-09 and five from Cookeville HSF were clonally propagated and ramets tested under field and RRP conditions similar to those with seedling-derived plants. Regionally native HSF consistently grew taller, had larger trunk diameters, and often had greater survival during the first 3 years in the landscape than HSF not native to the region in which the studies were conducted. Rapidity of root regeneration among HFS at the time of transplant was the best root growth related predictor of successful landscape establishment. Some growth advantages were found using genetically improved HSF, but not as consistent an improvement as with the use of seedlings from regional provenances. Within-family variation in landscape performance was greater with nonregional Cookeville clones than with regional TFS-09 clones, however there was overlap among the more vigorous Cookeville clones and the least vigorous TFS-09 clones. Increased rapidity of root regeneration and drought adaptations related to leaf morphology and gas exchange characteristics may be involved in enhanced growth responses of Texas regional genotypes. No consistent relationships were found among adventitious rooting responses from shoot cuttings and subsequent RRP of the same genotypes from root tissues or their growth during the first 3 years in landscapes.

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

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.

Expression of almond Knotted1 homologue (PdKn1) anticipates adventitious shoot initiation

2011 ◽  
Vol 48 (1) ◽  
pp. 40-49 ◽  
Author(s):  
Ana Margarida Santos ◽  
Melvin John Oliver ◽  
Ana Maria Sánchez ◽  
M. Margarida Oliveira
Keyword(s):  
Adventitious Shoot ◽  
Shoot Initiation
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