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E: Molecular Aspects of Hormone Synthesis and Action.
McKeon, T. A., Fernandez-Maculet, J. C. and Yang, S. F. (1995). "Biosynthesis and metabolism of ethylene". Plant Hormones: Physiology, Biochemistry and Molecular Biology. Dordrecht: Kluwer. pp. 118-139.
is the commercial name for ethephon phosphonicacid. The material is absorbed by the planttissue, and due to a change in pH, releasesethylene. Florel is used to promote flowerbud abortion and vegetative branching incrops. Although it is used in many situations,it is most commonly used where vegetativecuttings are being produced and in hangingbasket production. Florel is applied as afoliar spray at concentrations of 1000 to4000 ppm. Florel may also be used to promoteflowering in bromeliads.
Immunoassay methods of plant hormone analysis-- J.L.
However, hormones of plant or animal extraction that are bioidentical to human hormones are still not completely natural in the purest sense, because they undergo a laboratory process and several processing steps before the bioidentical end product is obtained.
is the commercial name for ancymidol. Itis more effective than either Cycocel orB-nine and is used at much lower rates. Concentrationsapplied are usually in the range of 10 to200 ppm for foliar sprays and 0.15 to 0.5mg per 6-inch container for substrate drenches.A-Rest readily moves through the plant andis usually used on crops where other chemicalsare not effective (most notably in bulb crops)or on very high value crops (i.e. plugs).Phytotoxicity may occur from A-Rest application(especially under high temperatures) andusually appears as necrotic spots. Poinsettiasare especially sensitive to injury from A-Restapplication. The primary limtation for A-Restis that it is a comparatively expensive growthretardant
ed of: Plant hormones and their role in plant growth and development.
McGaw, B. A. (1995). "Cytokinin biosynthesis and metabolism". Plant Hormones: Physiology, Biochemistry and Molecular Biology. Dordrecht: Kluwer. pp.98-117.
Petrochemical derived products; all pharmceutical drugs, plastic, styrofoam, herbacides, pesticides the list is frightening.
Bioidentical Progesterone for Menopausal Women
research reveals that the traditional treatment methods of Menopause were wrong.
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Cytokinins: Structure and Biosynthesis | Plant Hormones
Nature of Cytokinins
Cytokinins are compounds with a structure resembling adenine which promote cell division and have other similar functions to kinetin. Kinetin was the first cytokinin discovered and so named because of the compounds ability to promote cytokinesis (cell division). Though it is a natural compound, It is not made in plants, and is therefore usually considered a "synthetic" cytokinin (meaning that the hormone is synthesized somewhere other than in a plant). The most common form of naturally occurring cytokinin in plants today is called zeatin which was isolated from corn (Zea mays).
Plant Hormone Synthesis Pathway :: News :: …
Cytokinins have been found in almost all higher plants as well as mosses, fungi, bacteria, and also in tRNA of many prokaryotes and eukaryotes. Today there are more than 200 natural and synthetic cytokinins combined. Cytokinin concentrations are highest in meristematic regions and areas of continuous growth potential such as roots, young leaves, developing fruits, and seeds (Arteca, 1996; Mauseth, 1991; Raven, 1992; Salisbury and Ross, 1992).
BBC - GCSE Bitesize: Uses of plant hormones
History of Cytokinins
In 1913, Gottlieb Haberlandt discovered that a compound found in phloem had the ability to stimulate cell division (Haberlandt, 1913). In 1941, Johannes van Overbeek discovered that the milky endosperm from coconut also had this ability. He also showed that various other plant species had compounds which stimulated cell division (van Overbeek, 1941). In 1954, Jablonski and Skoog extended the work of Haberlandt showing that vascular tissues contained compounds which promote cell division (Jablonski and Skoog, 1954). The first cytokinin was isolated from herring sperm in 1955 by Miller and his associates (Miller et al., 1955). This compound was named kinetin because of its ability to promote cytokinesis. Hall and deRopp reported that kinetin could be formed from DNA degradation products in 1955 (Hall and deRopp, 1955). The first naturally occurring cytokinin was isolated from corn in 1961 by Miller (Miller, 1961). It was later called zeatin. Almost simultaneous with Miller Letham published a report on zeatin as a factor inducing cell division and later described its chemical properties (Letham, 1963). It is Miller and Letham that are credited with the simultaneous discovery of zeatin. Since that time, many more naturally occurring cytokinins have been isolated and the compound is ubiquitous to all plant species in one form or another (Arteca, 1996; Salisbury and Ross, 1992).
12/01/2018 · Uses of plant hormones
Dormancy stops seeds germinating until conditions are ideal for growth. Hormones can be used to remove the dormancy of a seed so it can germinate at all times of year. Buds and flowers can also be naturally dormant. Hormones can also be used to make plants grow bushier, make them flower or control the growth of hedge plants.
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