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Introduction:
Paclobutrazol is an anti-gibberellin often used for thickening up turf grasses; 1-tert-butyl-2-(P-chlorobenzyl)-2-(1,2,4-Triazol-1-yl)Ethanol
P687 Paclobutrazol
| Synonyms: | 1-tert-Butyl-2-(p-chlorobenzyl)-2-(1,2,4-triazol-1-yl)ethanol |
| CAS: | 76738-62-0 |
| Formula: | C15H20ClN3O |
| Mol. Weight: | 293.80 |
Properties
| Form: | Powder |
| Appearance: | White to Off-White |
| Application: | Plant Growth Regulator |
| Solubility: | DMSO |
| Storage Temp: | Room Temperature |
| Typical Working Concentration: | Varies with applications, should be determined by end user. |
| Other Notes: | Plant Tissue Culture Tested; For Research Use Only |
Application Notes
Paclobutrazol is known as a growth retardant containing an N-containing heterocycle. It functions by inhibiting cytochrome P450-dependent monooxygenases, which are enzymes that catalyzes the oxidation of ent-kaurene into ent-kaurene acid, thus it inhibits the gibberellins biosynthesis which leads to the inhibition of internodes elongation.2
It has been reported that Paclobutrazol enhances tuberization of potato at any sucrose concentration.3 Paclobutrazol also aids in preventing seed germination. A treatment of silver maple seeds with 1 mM paclobutrazol has been shown to delay germination by 50%.4
Please Note: While PhytoTechnology LaboratoriesT tests each lot of this product with two or more plant cell/ tissue culture lines, it is the sole responsibility of the purchaser to determine the appropriateness of this product for the specific plants that are being cultured and applications that are being used.
References
- Merck 13, 7053
- Rademacher, Wilhelm. 2000. Growth Retardants: Effects on Gibberellin Biosynthesis and Other Metabolic Pathways. Annu. Rev. Plant Physiol. Plant Mol. Biol. 51:501-531.
- Saos, F. Le Guen-le, A. Hourmant, F. Esnault, and J.E. Chauvin. 2002. In vitro Bulb Development in Shallot (Allium cepa. L. Aggregatum Group): Effects of Anti-gibberellins, Sucrose and Light. Annals of Botany. 89:419-425.
- Marshall J, T Beardmore, CA Whittle, B Wang, RG Rutledge& E Blumwald (2000) The effects of paclobutrazol, abscisic acid, and gibberellin on germination and early growth in silver, red, and hybrid maple. Can. J. For. Res. 30: 557–565.