Indolebutyric acid ≥% (T); CAS Number: ; EC Number: 5; Synonym: 4-(3-Indolyl)butanoic acid, 4-(3-Indolyl)butyric acid, IBA; Linear.
|Published (Last):||15 February 2018|
|PDF File Size:||5.95 Mb|
|ePub File Size:||17.72 Mb|
|Price:||Free* [*Free Regsitration Required]|
Maturation and related aspects in clonal forestry-part II: After 90 days of afido, the following variables were evaluated: With the exception of autumn, cuttings from year-old stock plants showed high mortality rates. 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 Bold letters for stock plants ages, small letters for treatments with IBA within butorico 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. The use of plant regulators, specifically IBA, has been recommended for stimulating and accelerating the process of adventitious root formation Guo et al.
Survival of cuttings, number of leaves and shoot and root fresh and dry matter were evaluated 45 days after.
In sanchezia, HA at It occurs naturally in South 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. 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.
It presents acute toxicity when ingested and cause irritation of skin, eyes and the respiratory tract if inhaled Sigma-Aldrich, Cuttings were collected in September and standardized to cm length and two apical leaves cut crosswise in half.
Ambiente de enraizamento e substratos na miniestaquia de erva-mate. How to cite this article.
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. We observed the average contrasts, calculated the regression equations and estimated the inndol that provided the best efficiency in terms of root dry matter.
Miniestaquia de Sapium glandulatum Vell. Acta Scientiarum Agronomy Maturation and related aspects in clonal forestry-Part I: IBA is also available as a saltimdol is soluble in water. The decline in rooting capacity in woody species is often linked to the effects ijdol maturation Ferreira et al. The highest percentage of rooting was observed in butirido fall, with application of mg L -1 of IBA Data were used to run an analysis of variance.
The regression equations were used to estimate the concentration of maximum physical efficiency for root dry matter as function of IBA and HA concentrations. The main factors that influence adventitious rooting in cuttings are related to the propagation material e. Our results indicate that the application acidl IBA and HA in apical cuttings of the Brazilian red-cloak and sanchezia, in the concentrations evaluated, accelerates plantlet production. We aimed to study the adventitious rooting of apical stem cuttings of Brazilian red-cloak and sanchezia plants in response to the application of different concentrations of IBA and HA.
Enraizamento de Miniestacas de erva-mate sob diferentes ambientes.
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. The low germination of Ilex paraguariensis seeds and acieo long reproductive cycle make cuttings propagation a good alternative for its reproduction all year round, enabling to obtain genetically superior clones.
Thus, we evaluated the influence of stock plants age, plant growth regulator indolebutyric acid IBA application and plant material collection in different seasons related to rooting of cuttings. 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: In general, the rooting percentage, number and length of roots had higher values butirifo years-old stock plants, a fact probably related to the greater vigor presented by these plants.
Nevertheless, IBA is an expensive chemical reagent produced by specialized companies. Autumn is the most favorable season to root induction, independently of the two studied stock plant ages. Vegetative propagation of mature dragon trees through epicormic shoots.
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 butitico years-old stock plants.
In autumn, the increase of roots number with IBA application for both stock plants ages was evident Table 1. Thus, more juvenile branches and in good nutritional condition tend to present a better rooting Wendling et al. Plantas ornamentais no Brasil: The addition of auxins has been verified in many studies and the concentrations required vary from species to species Abu-Zahra et al.
Indolebutyric acid – Wikipedia
Rhamnogalacturonan from Ilex paraguariensis: Global Science and Technology4: This alcohol solution is then diluted with distilled water to the desired concentration. Adventitious rooting in cuttings of croton and hibiscus in response to indolbutyric acid and humic acid.
It is also toxic to the environment, particularly aquatic environments Sigma-Aldrich, In plants of the Brazilian red-cloak, maximum physical efficiency for RDM was achieved at HA mode of action was not investigated in this work.
The solution should be kept in a cool, dark place for best results. In general, year-old stock plants showed the lowest percentage of cuttings with callus. These studies point to a potential new technological option for farmers, especially for those seeking bhtirico more sustainable agriculture, in which the use of synthetic inputs is reduced, while the recycling of organic waste is levered.