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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Seed germination and seedling growth of tomato and lettuce as affected by vermicompost water extracts Teas.

Revista Brasileira de Plantas Medicinais. International Journal of Botany.

Indole-3-butyric acid

Bold letters for ages, small letters for treatments with IBA within each season and capital letters between the seasons in each treatment with IBA. The branches of the year were collected in the morning and packed in polystyrene boxes, moistened and transported to the place of preparation. Root growth of Arabidopsis thaliana treated with humic acids isolated from typical soils of Rio de Janeiro state, Brazil. Gladiolus development in response to bulb treatment with different concentrations of humic acids.

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: ABSTRACT The low germination of Ilex paraguariensis seeds and their long reproductive cycle make cuttings propagation a good alternative for its reproduction all year round, enabling to obtain genetically superior clones.

Yerba mate; Vegetative rescue; Clonal forestry. This page was last edited on 29 Octoberat In connection with cytokinins like kinetinauxins like IBA can be used to cause the formation of masses of undifferentiated cells called callus.

Ácido indolacético – Wikipedia, a enciclopedia libre

The experiment was carried out in a randomized block design, with five replications, totaling experimental units. However, in eucalyptus there was no significant response Pinheiro et al. Revista Brasileira de Zootecnia, Ambiente de enraizamento e substratos na miniestaquia de erva-mate. Physiological effects of humic substances in higher plants. The use of inadequate techniques of cultivation and management, and especially the low genetic quality of the seedlings, resulted in the low productivity of the currently plantations Santin et al.


Introduction to plant physiology. In addition, it presents toxicity to humans, causing skin irritation and eye and respiratory infection, if handled improperly Sigma-Aldrich, We concluded that IBA, in the abovementioned concentrations, increased adventitious rooting in cuttings of both the Brazilian red-cloak and sanchezia, while optimal doses of HA solutions are very likely to improve adventitious rooting in sanchezia, but not in the Brazilian red-cloak.

Once the regression equations for plant growth characteristics as function of IBA and HA concentrations were obtained Table 3we calculated the concentrations of maximum physical efficiency for RDM for the Brazilian red-cloak and sanchezia Table 4.

The role of endogenous carbohydrates and seasonal variation in rooting ability of cuttings of an easy and a hard to root olive cultivars Olea europaea L.

The regression equations were used to estimate the concentration of maximum physical efficiency for root dry matter as function of IBA and HA concentrations.

Megaskepasma erythrochlamys; Sanchezia nobilis; vegetative propagation; humic substances; auxins. Services on Demand Journal. The slopes of the regression equations were tested when presented coefficient of determination greater than 0.

The highest values were verified in autumn, regardless of IBA concentration, in stock plants of 80 years of age Table 1.

Biomass accumulation in shoots in response to HA application in nursery material had already been reported for other species of agronomic interest such as pineapple Baldotto et al. The high survival The highest percentages were verified in winter, at concentrations of 0 and mg L -1 IBA Table 1.

IBA is a plant hormone in the auxin family and is an ingredient in many commercial horticultural plant rooting products.

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. 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.


The low germination of Ilex paraguariensis seeds and their long reproductive cycle make cuttings undol a good alternative for its reproduction all year round, enabling to obtain genetically superior clones. It is possible to observe in this study the viability to rescue genetic material of high chronological age, representing an advance in the propagation of yerba mate adult plants. Maturation and related aspects in clonal forestry-Part I: Enraizamento butirjco estacas de erva-mate Ilex paraguariensis St.

Panorama atual e perspectivas futuras da cadeia produtiva de flores tropicais: The decline in rooting capacity in woody species is often linked to the effects of maturation Ferreira et al.

In autumn, the increase of roots number with IBA application for both stock plants ages was evident Table 1. Callus formation is 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 to certain hormones like auxins that produce roots.

We observed the average contrasts, calculated the regression equations and estimated the concentrations that provided the best efficiency in terms of root dry matter. Cuttings from years-old stock plants have higher ability to form adventitious roots and the use of IBA did butirio increase rooting potential.

However, other studies have suggested the existence of different mechanisms Zandonadi et al. Thus, cuttings collected from younger stock plants have greater vigor and greater easiness to root, justifying the best results observed in the present work, for cuttings collected from years-old stock plants.

Autumn proved to be the most favorable season for rooting, followed by spring and winter.