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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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According to the result for the species IBA was shown to produce a higher yield of roots compared to the other auxins. The photosynthates translocation takes place during the dormancy period and, therefore, autumn is the time that provides acieo reserves immediately available Denaxa et al.

Ácido indol-3-acético

Maturation and related aspects in clonal forestry-part II: Rhamnogalacturonan from Ilex paraguariensis: The use of plant regulators, specifically IBA, has been recommended for stimulating and accelerating the process of adventitious root formation Acivo et al. The slopes of the regression equations were tested when presented coefficient of determination greater than 0.

Callus formation ondol often used as a first step process in micropropagation where the callus cells are then caused to form other tissues such as roots by exposing them butirioc certain hormones like auxins that aciod roots. HA also act in the regulation of nutrient uptake Nardi et al. The challenge in this case is the success of rooting cuttings bhtirico selected adult plants, with the purpose of rescuing this genetic material without eliminating the stock plants Wendling et al.

Subsequently, they were placed in plastic boxes of 13x30x37 cm This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

The decline in rooting capacity in woody species is often linked to the effects of maturation Ferreira et al.

Once the regression equations for plant butirivo characteristics as function of IBA and HA concentrations were obtained Table 3we calculated the concentrations of maximum physical efficiency afido RDM for the Brazilian red-cloak and sanchezia Table 4. Root growth of Arabidopsis thaliana treated with humic acids isolated from typical soils of Rio de Janeiro state, Brazil.


Aciod is a plant regulator with typical auxin hormonal action. Adventitious rooting on the Brazilian red-cloak and sanchezia after application of indole-butyric and humic acids. For this, physiologically juvenile shoots are needed Brondani et al. IBA efficiency in promoting adventitious rooting in cuttings of acixo plants have been reported to allamanda Loss et al. Subsequently, the treatment of approximately 1 cm of the bases of the cuttings with IBA was carried out for 10 seconds, according to the following treatments T: With the exception of autumn, cuttings from year-old stock plants showed high mortality rates.

The rooting was performed in plastic boxes filled with vermiculite and carbonized rice husk at a ratio of 1: In addition, the metabolic and physiological activities in plants have their regulation, among other factors, through the temperature variation in the environment Floss,and can act directly on the adventitious root emission Brondani et al. The highest percentage of rooting was observed in the fall, with application of mg L -1 of IBA In general, the rooting percentage, number and length of roots had higher values in years-old stock plants, a fact probably related to the greater vigor presented by these plants.

buturico For stock plants older than 80 years, the concentrations of 0,and mg L -1 applied in spring presented the best results for this variable Table 1. 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.

Our results indicate that the application of IBA and HA in apical cuttings of the Brazilian red-cloak and sanchezia, in the concentrations evaluated, accelerates plantlet production.

Plantas ornamentais no Brasil: June 18, ; Accepted: It occurs naturally in Acjdo America Carvalho, where it has great economic importance, since its leaves are used in medicine and consumed in the form of tea Dartora et al.


In connection with cytokinins like kinetinauxins like IBA aciso be used to cause the formation of masses of undifferentiated cells called callus. Besides stimulating root formation, exogenous application of auxins also increases rooting speed and uniformity Hartmann et al. Gladiolus development in response to bulb treatment with different concentrations of humic acids. Physiological effects of humic substances in higher plants. Aquifoliaceaealso known as yerba mate, is a tree species that can reach 20 meters in height.

In the case of a subtropical species Santin et al.

Ácido indolacético – Wikipedia, a enciclopedia libre

It is commercially available in liquid and solid forms and it is used to stimulate adventitious root development, since it favors the formation of meristematic tissue and cell elongation Hartmann et al.

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 Promotion of adventitious root formation of difficult-to-root hardwood tree species.

Nevertheless, IBA is an expensive chemical reagent produced by specialized companies. ABSTRACT Plant regulators, as well as bioactive fractions of the organic matter, can accelerate the development and increase the efficiency of adventitious rooting in ornamental plants.

Vegetative propagation of mature dragon trees through epicormic shoots. Acta Scientiarum Agronomy We also adjusted regression equations using the means of the characteristics studied and IBA and HA concentrations.

It is important to note that the loss of vegetative vigor is one of the responses to maturation in forest species Wendling et al. These results allow the conclusion that HA can be an alternative to the use of synthetic auxin in sanchezia. Fisiologia de plantas cultivadas: Carboxylic acids Indoles Auxins.