to inhibitorio de ABA también es contrarrestado por giberelinas. Latencia de .. Se han descrito varias funciones biológicas de las poliaminas, entre ellas. parte giberelinas (gas). parte descubrimiento de las giberelinas. el También puede variar la citada estructura en función de la posición del grupo hidroxilo. GIBERELINAS Y CITOQUININAS. LUGAR DE BIOSÍNTESIS DE LA CITOQUININA. FUNCIONES.

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Las hormonas vegetales. by LoreEloMari PereCabePadi on Prezi

Effect of gibberellic acid and 6-bencilaminopurine on bud development of cacao grafts Theobroma cacao L. Most of the cacao plantations of Colombia are certainly old and need to be renewed due to low yield.

Funcionea this reason, the present work takes on the massive production of high yielding scions, which, notwithstanding, have shown grafting problems, specifically regarding bud initiation and further growth. The experiment followed a completely randomized design with seven treatments consisting in 5, 10 and 15 mg L -1 solutions of both gibberellic acid GA3 and 6-benzylaminopurine 6BAPplus a hormone-free control.

Scion height, length, diameter, number of leaves fuunciones foliar area were measured every three days.

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At the end of the experiment, which took a total of 30 days, scion fresh and dry mass were also determined. Regarding scion number of leaves, foliar area and fresh and dry mass, the highest counts fucniones reached due to the GA 3 treatments. Besides the highest diameters, the 6BAP treated scions reached close records to those of the materials that received GA3, although sometimes exhibiting statistical differences. Among the GA 3 applications, the 10 mg L -1 one showed the best results in both clones.

However, after receiving the hormone treatments, both clones showed similar data. Las citoquininas inician el crecimiento de las yemas laterales Taiz y Zeiger, Las soluciones se realizaron en agua destilada y desionizada con el fin de garantizar la pureza de la mezcla. Resultados similares se encontraron en soya Glycine max en lo que se refiere a los tratamientos con AG 3pero el efecto de las citoquininas en esta funcciones es distinto.

El tratamiento con mg L -1 de AG 3 aplicado foliarmente a plantas de G. Cabe anotar que las plantas de dichos ensayos no fueron cortadas o modificadas en su estructura.


Las dosis menores no fueron efectivas Sansberro et al. En Phaseolus vulgaris Castro et al. Sin embargo, los mismos resultados no fueron obtenidos en plantas de G.

Al respecto, Romanko et al. Sumado a lo anterior, Leite et al. Para CCN51 el mejor tratamiento fue el de 10 mg L -1 de AG 3 con un promedio de 3,22 g de masa fresca y 1,11 g de masa seca seguido por el tratamiento de 15 mg L -1 de 6BAP con 2,71 g de fresca y 0,97 g de seca.

Por lo anterior, las auxinas en el tallo pueden influir en el crecimiento de las yemas, a una determinada distancia Bennett et al. Reguladores del crecimiento para su uso en viveros. Mutual interaction of auxin and cytokinins in regulating correlative dominance.

Van Onckelen e I. The Arabidopsis MAX pathway controls shoot branching by regulating auxin transport. Auxin acts in xylem-associated or medullary cells to mediate apical dominance.

HORMONA VEGETAL by marlin ferreira on Prezi

Plant Cell 15, The indirect role of 2,4-D in the maintenance of apical dominance in decapitated sunflower seedlings Helianthus annuus L. A role for cytokinins in de-etiolation in Arabidopsis. The role of hormones in apical dominance. New approaches to an old problem in plant development. Gibberellic acid influence on vegetative growth, nodulation and yield of cowpea Vigna unguiculata L. Correlative inhibition of lateral bud growth in Phaseolus vulgaris L.

Effect of soaking seeds in some growth regulators and micronutrients on growth, some chemical constituents and yield of faba bean and cotton plants.

Changes in the development of apical meristem of Pinus sylvestris in response to gibberellin application. Plant Cell 13, Fase 0 o preparativa. Distinct isoprenoid origins of cis- and trans-zeatin biosyntheses in Arabidopsis. Physiological studies on the head formation in cabbage. Role of terminal bud in the head formation posture.

Response to gibberellin structural variants shows that ability to inhibit flowering correlates with effectiveness for promoting stem elongation of some plant species. Chloroplasts affect the leaf response to cytokinin.

Cytokinin stimulates and abscisic acid inhibits greening of etiolated Lupinus luteus cotyledons by effecting the expression of the light-sensitive protochlorophyllide oxidoreductase. The assembly of gierelinas CAAT-box binding complex at a photosynthesis gene promoter is regulated by light, cytokinin, and the stage of the plastids. Cytokinins, abscisic acid and light affect accumulation of chloroplast proteins in Lupinus luteus cotyledons, without notable effect giberrlinas steady-state mRNA levels.


Gibberellin-enhanced indoleacetic acid biosynthesis: D-tryptophan as a precusor of indoleacetic acid.

Gibberellin and cytokinin effects on soybean growth. Gene expression in cytokinin – and light-mediated plastogenesis of Cucurbita cotyledons: Arabidopsis auxin-resistance gene AXR1 encodes a protein related to ubiquitin-activating enzyme E1. Growth and development of the axr1 mutants of Arabidopsis.

Plant Cell 2, Transport of exogenous auxin in twobranched dwarf pea seedlings Pisum sativum L.

Improvement in the seed germination of soybean varieties by pre-soaking treatments. Reevaluating concepts of apical dominance and the control of axillary branching. Auxin regulation of cytokinin nbiosynthesis in Arabidopsis thaliana: Altered cytokinin metabolism affects giberelnias, auxin, and abscisic acid contents in leaves and chloroplasts, and chloroplast ultrastructure in transgenic tobacco.

Nataima, Corpoica, El Espinal, Colombia. Vegetative growth and nutritional status as influenced by auxins and gibberellic acid, and their effect on fruit yield in lemon. Increased yield and suppression of shoot growth and nute populations of d anjou pear trees with nitrogen and paclobutrazol. Effect of cytokinin on the physiological activity of chloroplasts.


Influence of seed treatment with 2-chloroethylphosphonic acid, gibberellic acid, ascorbic acid, and simazine on growth and nutrient composition of pea Pisum sativum L. Plant Soil 43, Efecto de cuatro fitoreguladores comerciales en el desarrollo y rendimiento del girasol. Ciencia UANL 4, Chemical regulation of growth and organ formation in plant tissues cultured in vitro.

Sinauer Associates, Funciknes, MA. Changes in the branching pattern of Pinus radiata derived from grafting are supported by variations in the hormonal content. Cytokinin effects on tetrapyrrole biosynthesis and photosynthetic activity in barley seedlings. Services on Demand Article.

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