The Weak Cytokinins N,N′-bis-(1-naphthyl)urea and N,N′-bis-(2-naphthyl)urea may Enhance Rooting in Apple and Mung Bean

Ricci, Ada; Carra, Angela; Rolli, Enrico; Bertoletti, Cristina; Branca, C.

doi:10.1007/s11240-005-4931-2

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…Cuttings prepared from mung bean seedlings have been used as a model to examine adventitious root formation and in bioassays to identify putative rooting-promoting substances (Arthur et al 2004;De Klerk 1999;Kollarova et al 2005;Mutui et al 2005;Ricci et al 2005). Major advantages of mung bean cuttings concern their convenience: seeds are available in large numbers, cuttings can be prepared ca.…”

Section: Introductionmentioning

confidence: 99%

Ethylene and rooting of mung bean cuttings. The role of auxin induced ethylene synthesis and phase-dependent effects

Klerk

Hanecakova

2008

Plant Growth Regul

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We have re-examined the role of ethylene during rooting of mung bean cuttings. Cuttings were treated for 5 days with a low or a high concentration of NAA (naphthaleneacetic acid). During this 5 days period, we also applied STS (silverthiosulfate, an inhibitor of ethylene action) or ACC (1-aminocyclopropane-l-carboxylic acid, a direct precursor of ethylene). At high NAA concentration, STS promoted and ACC inhibited rooting, respectively. At low NAA concentration, the effects were opposite, STS being inhibitory and ACC promotive. AVG (aminoethoxyvinylglycine, an inhibitor of ethylene synthesis) gave similar results as STS. Together, these data suggest supraoptimal and suboptimal ethylene levels in the tissue at high and low NAA concentration, respectively. We also examined whether the effect of ethylene varied during the successive phases of the rooting process. Thus, we gave 24 h pulses with either STS or ACC during the rooting treatment. During the first two days (0-48 h), ACC-pulses were promotive and STS-pulses inhibitory. Later on (48-168 h), the ACC-pulses were inhibitory and the STS-pulses promotive. Whether this effect was observed or not was dependent on the NAA concentration. These data indicate that ethylene promotes or inhibits rooting depending on the stage in the rooting process. When ACC was added only during the initial period, rooting was increased at all NAA concentrations in a NAA dose-response curve and the optimal NAA concentration remained the same. This suggests that ethylene renders more cells responsive to NAA.

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Section: Introductionmentioning

confidence: 99%

Ethylene and rooting of mung bean cuttings. The role of auxin induced ethylene synthesis and phase-dependent effects

Klerk

Hanecakova

2008

Plant Growth Regul

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“…Application of rooting stimulants (1-Naphthyl and 2-Naphthhyl) slightly increase the number of roots of apple and mung bean [51]. In a study by Trofimuk et al [52] it was reported that rooting stimulants influence in a positive way the number and length of roots of Abies gracilis, which is useful in accelerating the production of plant material, and reduces rooting time in woody ornamental plants.…”

Section: Discussionmentioning

confidence: 98%

Efficacy of Different Concentrations of NAA on Selected Ornamental Woody Shrubs Cuttings

et al. 2021

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Ornamental woody shrubs are used in landscape design worldwide. Their propagation can be made generatively and vegetatively. Vegetative propagation methods are mostly used by nurseries, as such methods are quick and the newly propagated plants inherit the genetics of the mother plant. However, rooting in some woody plants is slow and, unfortunately, sometimes produces only a small number of rooted cuttings. In this study, shoot cuttings from six selected ornamental woody shrubs were subjected to different concentrations of rooting stimulators (0.5 (NAA5) and 0.8 (NAA8) % concentrations of 1-Naphthylacetic acid; cuttings without treatment were considered as control) and propagated in two different periods (spring and summer). Our results show that significant changes were obtained in the plants under the different treatments. Most of the plants showed a positive response to both treatments, expect for Cotinus coggygria ‘Royal Purple’, which, compared to control, registered decreases in all the tested parameters under NAA5 treatment. Ilex aquifolium was the species that showed increments in all the parameters when NAA treatments were applied. In conclusion, our research suggests that NAA increases rooting in ornamental woody shrubs, although in some cases rooting could be a species-dependent process.

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Promotion of Adventitious Root Formation of Difficult‐to‐Root Hardwood Tree Species

Pijut

Woeste

Michler

2010

Horticultural Reviews

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The Weak Cytokinins N,N′-bis-(1-naphthyl)urea and N,N′-bis-(2-naphthyl)urea may Enhance Rooting in Apple and Mung Bean

Cited by 5 publications

References 29 publications

Ethylene and rooting of mung bean cuttings. The role of auxin induced ethylene synthesis and phase-dependent effects

Ethylene and rooting of mung bean cuttings. The role of auxin induced ethylene synthesis and phase-dependent effects

Efficacy of Different Concentrations of NAA on Selected Ornamental Woody Shrubs Cuttings

Promotion of Adventitious Root Formation of Difficult‐to‐Root Hardwood Tree Species

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