Indolebutyric acid ≥% (T); CAS Number: ; EC Number: 5; Synonym: 4-(3-Indolyl)butanoic acid, 4-(3-Indolyl)butyric acid, IBA; Linear.

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The objective of the present study was to evaluate the influence of stock plants age, plant growth regulator Ibdol application and plant material collection in different seasons related to rooting of cuttings. The cuttings were disinfested with 0.

In plants of the Brazilian red-cloak, maximum physical efficiency for RDM was achieved at June 18, ; Aciod International Journal of Botany. HA, the most stable reactive fraction of humic substances, have dark color and varied chemical structure, with high content of aromatic rings and carboxylic, phenolic and quinone functional groups Baldotto et al.

This result may be a consequence of the branches physiological condition at the time of collection, because it is during this period that plants begin to store reserves in the stem, being readily available to the cuttings during the periods of greatest growth, decreasing, consequently the mortality Oliveira et al. Autumn is the most favorable season to root induction, independently of the two studied stock plant ages.

Forty-five days after, the following characteristics were assessed: The rooting was performed in plastic boxes filled with vermiculite and carbonized rice husk at a ratio of 1: Effect of potassium fertilization on yield and nutrition of yerba mate Ilex paraguariensis.

Ácido indol-3-acético

Introduction to plant physiology. Theoretical and Experimental Plant Physiology HA also act in the regulation of nutrient uptake Nardi et al.

It should be emphasized that the high survival observed in the younger stock plants, could reflect in a higher percentage of rooting, if exposed to a longer period of permanence in greenhouse.

By using this site, you agree to the Terms of Use and Privacy Policy. The solution should be kept in a cool, dark place for best results. The success in the cuttings propagation of woody species is often related to the existence of reserve substances in the stem, mainly carbohydrates, which will supply the necessary energy to the rhizogenesis Oliveira et al.


Megaskepasma erythrochlamys; Sanchezia nobilis; vegetative propagation; humic substances; auxins. Views Read Edit View history.


It is commercially available in liquid and acidoo forms and it is used to stimulate adventitious root development, since it favors the formation of meristematic tissue and cell elongation Hartmann et al. The experiment was carried out in a randomized block design, with five replications, totaling experimental units. Data were used to run an analysis of variance. Notulae Botanicae Horti Agrobotanici.

The plants respond progressively to the stimulus to an optimal level of auxin, from which, the increase in concentration becomes inhibitory or even phytotoxic Pop et al. Effect of auxin treatments, cuttings collection date and initial characteristics on Paeonia ‘Yang Fei Chu Yu’ cutting propagation.

From 12 and over years-old trees shoots cuttings were made in four seasons, treated with IBA hydroalcoholic solution at concentrations of 0, and mg L Cuttings were placed in 50 mL plastic cups containing HA solutions for 24 hours Baldotto et al. The photosynthates translocation takes place during the dormancy period and, therefore, autumn is the time that provides these reserves immediately available Denaxa et al. This page was last edited on 29 Octoberat These results allow the conclusion that HA can be an alternative to the use of synthetic auxin in sanchezia.

We evaluated rooting in buririco Brazilian red-cloak Megaskepasma erythrochlamys and sanchezia Sanchezia nobilis cuttings in response to application of indole-butyric acid IBA and humic acids HA.

RESULTS Regardless of IBA concentrations and seasons of the year, year-old stock plants presented higher rooting, except for summer, in which the variables did not differ and the rooting rate was low.


Indole-3-butyric acid

Nevertheless, IBA is an expensive chemical reagent produced by specialized companies. However, plant response to HA application is not uniform and varies with the raw material which these compounds where extracted from and their concentration, and plant genotype Baldotto et al.

After 90 days of installation, the following variables were evaluated: Maturation and related aspects in clonal forestry-Part I: Retrieved from ” https: Other names 1 H -indolebutanoic acid indolebutyric acid 3-indolebutyric acid indolebutyric acid IBA. Maintenance of leaves and indolebutyric acid in rooting of juvenile Japanese Flowering Cherry cuttings.

Mercado interno para os produtos da floricultura brasileira: May 31, ; Accepted: The experiments were carried out in the four seasons between and on the following dates: The experiments were carried out in a completely randomized design, with butieico factorial arrangement 2 ages of stock plants, 5 IBA concentrations and 4 seasons of the yearwith 4 replications of 20 cuttings per experimental unit. Vegetative propagation of mature dragon trees through epicormic shoots.

The highest values were verified in autumn, regardless of IBA concentration, in stock plants of 80 years of age Table 1. It is possible to observe in this study the viability to rescue genetic material of high chronological age, acidl an advance in the propagation of yerba mate adult plants. Yerba mate; Vegetative rescue; Butirlco forestry.

The high mortality seems to be related mainly to the harvesting season, since in the autumn the mortality was low for the two plants ages, as well as for all the concentrations of IBA used.

The same tables contain the average contrasts for qualitative data.