It is used either alone or in combination with other auxins such as Naphthalene acetic acid (NAA). Auxin can also be found as a side chain–lengthened indole-3-butyric acid (IBA). ‘Synthetic’ auxin 3-indole-butyric acid (IBA) was reported to promote rooting and is now used commercially worldwide to root many plant species [83–86]. Its metabolic precursor, indole-3-butyric acid (IBA), is more stable in some instances. Hormodin is easy to use, yielding steadfast performance of rooted cuttings and zero disease migration. Indeed, IBA is the active ingredient in plant propagation media, such as Rootone ® , … Auxin just so happens to be the most important hormone for rooting. IBA, initially described as a synthetic auxin that induces rooting in woody plant cuttings (Cooper 1935), is an endogenous plant compound (Epstein et al. IBA (Indole-3-butyric acid) is a plant hormone that promotes root formation and can be used in micropropagation techniques. Auxins are well-known plant growth hormones involved in a variety of plant activities [82]. One of the synthetic auxin is: Options (a) IAA (b) GA (c) IBA (d) NAA. The most widely used of the synthetic auxins for this purpose is Indolebutyric acid (IBA). IBA and NAA are currently the most widely used auxins for promoting root formation on stem cuttings (1). IBA is a naturally occurring endogenous auxin in plants, whereas 1-Naphthaleneacetic acid (NAA) and 2,4-Dichlorophenoxyacetic acid (2-4-D) are synthetic auxins. Auxin a- C 18 H 33 O 5 & Auxin b - C 18 H 30 O 4 (IAA) exist in plants. Hormodin enhances rooting, which reduces propagation bench time and plant loss. IBA is a synthetic auxin rooting hormone, which acts as a root stimulant. Soon after, the synthetic auxins indole-3-butyric acid (IBA; now known to occur in plants) and 1-naphthaleneacetic acid (NAA) were shown to be more effective than IAA for rooting cuttings (5). For decades, IBA was described as a ‘synthetic auxin’ that elicited auxin-like effects such as root initiation, stem bending, and leaf epinasty (Zimmerman and Wilcoxon, 1935). … It is applied exogenously and used as a plant growth 40 regulator (EPA, 1992). Auxin We offer naturally occurring as well as synthetic auxins. Synthetic auxins artificially made by the human such as I) 2, 4-D, II) 2,4,5-T III) IBA IV) NAA, V) PAA, VI) IPA. The potent natural auxin, 3-indoleacetic acid (IAA), is available in both acid and salt form. All Auxins play important role in the plant's life cycle and essential for plant body development. Types of Auxins: Natural auxins and synthetic Auxins regulating 41 responses of plants against biotic and abiotic stresses (Tognetti et al., … Synthetic auxins are those chemical compounds that are not occurs naturally in plants. IBA exerts different effects on plant growth and development, e.g. In tissue culture, auxins are balanced with cytokinins for full morphogenesis. IAA is the active principle of Auxin. Explanation: NAA is a synthetic auxins. Recently attention has been called to the effectiveness of some of the chlorinated phenoxy acids. There are natural and synthetics auxins. these chemical compounds work as natural auxins (Indole 3 Acetic Acid). Some of the most widely used weed killers are synthetic auxins. Correct Answer: NAA. 39 IBA is a plant hormone in the “auxin”group. Naturally occurring: Indole-3-acetic acid (IAA) Indole-3-butyric acid (IBA) Synthetic: Naphthalene acetic acid (NAA) 2,4-dichlorophenoxyacetic acid (2,4-D) IAA is very important and is also the most naturally occurring auxin in plants. 1989; Ludwig-Müller 2000).
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