scholarly journals Improving rooting of Lobostemon fruticosus L. cuttings with delayed auxin treatment

2016 ◽  
Vol 105 ◽  
pp. 111-115 ◽  
Author(s):  
K.E. Lodama ◽  
E.S. du Toit ◽  
J.M. Steyn ◽  
H.T. Araya ◽  
G. Prinsloo ◽  
...  
Keyword(s):  
Auxin Treatment

scholarly journals Collection season and auxin treatment in the propagation by cuttings of mandarin hybrids

2016 ◽  
Vol 46 (2) ◽  
pp. 215-221 ◽  
Author(s):  
Andrés Iván Prato Sarmiento ◽  
Paulo Vitor Dutra de Souza ◽  
Sergio Francisco Schwarz
Keyword(s):  
Experimental Design ◽  
Vegetative Growth ◽  
Late Spring ◽  
Indolebutyric Acid ◽  
Rooted Cuttings ◽  
Exogenous Application ◽  
Auxin Treatment ◽  
Randomized Experimental Design

ABSTRACT Propagation by cuttings is an alternative for obtaining citrus rootstocks. The exogenous application of indolebutyric acid (IBA), cutting collection season and genotypes used may affect the rooting and vegetative growth of citrus rootstocks cuttings. Two experiments were conducted to study the influence of these factors. In the first one, semi-hardwood cuttings from the 'Sunki' mandarin hybrids H49 and H77 were collected in the fall and late spring of 2013 and treated with IBA (0 mg L-1, 1,500 mg L-1 and 3,000 mg L-1). For each collection season, a 2 x 3 (two genotypes x three IBA concentrations) factorial scheme was adopted, in a randomized blocks design. In the second experiment, the development of cuttings that rooted in the late spring was evaluated until grafting. In this case, a completely randomized experimental design was adopted, with the hybrids H49 and H77. The IBA treatments positively influenced rooting and number of roots only in the fall collection, peaking at 23.3 % of rooted cuttings. In the late spring collection, rooting was close to 100 %, with the IBA treatment being unnecessary. Around 50 % of cuttings from the 'Sunki' mandarin hybrids were ready for grafting at 14 months after cutting.

Phenyl indole-3-thiolobutyrate increases growth of transplanted 1-0 red oak

1988 ◽  
Vol 18 (1) ◽  
pp. 131-134
Author(s):  
Daniel K. Struve ◽  
W. Timothy Rhodus
Keyword(s):  
Leaf Area ◽  
Butyric Acid ◽  
Dry Weight ◽  
Area Ratio ◽  
Leaf Area Ratio ◽  
Red Oak ◽  
Relative Growth ◽  
Auxin Treatment ◽  
Net Assimilation

The basal 1 cm of taproot of dormant bareroot 1-0 red oak (Quercusrubra L.) seedlings were given a 3-s dip in 20, 40, or 80 mM concentrations of indole-3-butyric acid (IBA), phenyl indole-3-thiolobutyrate (P-ITB), or equal parts IBA and P-ITB at 20 or 40 mM concentrations. Sixty control seedlings were dipped in 95% ethanol, while 30 seedlings were used for each auxin treatment. Seedlings were potted on May 12, 1986, and grown outdoors. At the end of the 104-day study period, all concentrations of IBA and P-ITB significantly increased number of roots regenerated (from 5.3 with 20 mM IBA to 11.9 for 80 mM IBA) compared with control seedlings. However, P-ITB-treated seedlings produced significantly more leaves (20–24) and leaf area (320–472 cm2), and up to 10 g more dry weight than IBA and non-auxin-treated seedlings. P-ITB treated seedlings had higher relative growth and net assimilation rates and lower leaf area ratio than IBA-treated or control seedlings. Seedlings treated with 20 mM of equal parts IBA and P-ITB were similar to P-ITB-treated seedlings while seedlings treated with the 40 mM IBA and P-ITB combination were similar to IBA-treated seedlings.

In vitro auxin treatment promotes cell division and delays endoreduplication in developing seeds of the model legume speciesMedicago truncatula

2012 ◽  
Vol 148 (4) ◽  
pp. 549-559 ◽  
Author(s):  
Rana M. Atif ◽  
Florian Boulisset ◽  
Catherine Conreux ◽  
Richard Thompson ◽  
Sergio J. Ochatt
Keyword(s):  
Cell Division ◽  
Model Legume ◽  
Developing Seeds ◽  
Auxin Treatment

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 Winter Stem Cutting Propagation of Heller’s Japanese Holly with and without Use of a Conventional Auxin Treatment

2012 ◽  
Vol 22 (6) ◽  
pp. 771-773 ◽  
Author(s):  
Eugene K. Blythe ◽  
Jeff L. Sibley
Keyword(s):  
Slow Growth ◽  
Naphthaleneacetic Acid ◽  
Stem Cuttings ◽  
Department Of Agriculture ◽  
Slow Growth Rate ◽  
Cutting Propagation ◽  
Auxin Treatment ◽  
Landscape Plant ◽  
Dark Green ◽  
High Humidity Environment

Heller’s japanese holly [Ilex crenata ‘Helleri’ (synonym: Ilex crenata f. helleri)] is a popular landscape plant in U.S. Department of Agriculture hardiness zones 5b to 8a because of its dwarf habit, slow growth rate, and dark green leaves. Plants can be propagated readily by stem cuttings and use of an auxin treatment is generally recommended to promote rooting. This study was conducted to determine if auxin treatment could be eliminated, thus reducing labor and chemical requirements in the cutting propagation process. In three experiments, terminal stem cuttings of Heller’s japanese holly were taken in winter, prepared both with and without use of a basal quick-dip in an auxin solution [2500 ppm indole-3-butyric acid (IBA) + 1250 ppm 1-naphthaleneacetic acid (NAA)], and rooted in a warm, high-humidity environment. Both nontreated cuttings and cuttings receiving a 1-second basal quick-dip in the auxin solution rooted at, or near, 100%. However, treatment of cuttings with auxin resulted in larger root systems on the rooted cuttings, which could allow earlier transplanting into larger nursery containers. No inhibition of new spring growth was exhibited by cuttings treated with auxin in comparison with nontreated cuttings.

scholarly journals Propagation of Ilex vomitoria ‘Dare County’ by Stem Cuttings

2012 ◽  
Vol 30 (2) ◽  
pp. 55-57 ◽  
Author(s):  
Christopher R. Lambert ◽  
Frank A. Blazich ◽  
Anthony V. LeBude
Keyword(s):  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Auxin Treatment ◽  
Linear Decrease ◽  
Ilex Vomitoria

Semi-hardwood or hardwood stem cuttings of Ilex vomitoria Sol. ex Ait. ‘Dare County’ [‘Dare County’ yaupon holly (syn. ‘Virginia Dare’ yaupon holly)] were treated with solutions of the potassium (K) salt (K-salt) of indolebutyric acid (K-IBA) at 0 to 8000 mg liter−1 (ppm). Nontreated semi-hardwood cuttings rooted at 78% whereas, regardless of auxin treatment, hardwood cuttings taken on two dates rooted at 15%. Treatment of cuttings with K-IBA was generally ineffective and resulted in a linear decrease (P ≤ 0.05) in percent rooting of semi-hardwood cuttings.

scholarly journals 578 PB 059 IN VITRO ROOTING OF PYRUS GERMPLASM

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 514e-514
Author(s):  
Barbara M. Reed
Keyword(s):  
Butyric Acid ◽  
Growth Regulators ◽  
In Vitro Rooting ◽  
The Other ◽  
Naphthaleneacetic Acid ◽  
Auxin Treatment ◽  
Wide Range ◽  
Hybrid Selection ◽  
Higher Temperature

Cultures of 49 Pyrus species and cultivars and one Pyronia (Pyrus × Cydonia hybrid) selection were screened in vitro to determine a rooting method suitable for a wide range of germplasm. Auxin treatment was required for rooting in most cases. Eighteen of the 50 accessions rooted with a 15 sec. 10 mM indole-3-butyric acid (IBA) dip followed by growth on medium with no growth regulators (NCR). Medium with 10 μM IBA for one week followed by NCR medium produced 12 rooted accessions, but NCR medium alone produced little or no rooting. A 15 sec. dip in 10 mM naphthaleneacetic acid (NAA) followed by NCR medium was tested on 29 accessions which rooted poorly on the other three treatments. Twice as many (28%) rooted on NAA as on either IBA treatment (14% each). Additional treatments combining IBA with darkness or higher temperature were also tested and were successful for some cultivars. P. calleryana, P. koehnei, P. pashia, P. hondoensis, P. ussuriensis, P. betulifolia, P. regelii, P. pyrifolia hybrid cv. Shinseiki and the Pyronia selection failed to root. Twenty two of the 32 P. communis cultivars rooted on at least one treatment.

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