Mortiz, T., Philipson, J. and Odén, C. (1990) Quantization of Gibberellins A1 , A3, A4, A9 and an A9-Conjugate in Good- and Poor-Flowering Clones of Sitka spruce (Picea sitchensis) during the Period of Flower-Bud Differentiation. Planta, 181, 538-542.

has been cited by the following article:

• TITLE: Development of a Rapid and Efficient Liquid Chromatography Method for Determination of Gibberellin A4 in Plant Tissue, with Solid Phase Extraction for Purification and Quantification

  AUTHORS: Julia Medrano Macías, Rahim Foroughbakhch Pournavab, Manuel Humberto Reyes-Valdés, Adalberto Benavides-Mendoza

  KEYWORDS: Dasyrilon cedrosanum; Epithelantha micromeris; Phytohormone Separation; Plant Growth Regulators; Reverse Phase Liquid Chromatography; Solid Phase Extraction

  JOURNAL NAME: American Journal of Plant Sciences, Vol.5 No.5, March 11, 2014

  ABSTRACT: A new, rapid and efficient reverse phase Liquid Chromatography (RP-LC) method was developed for determination of Gibberellin A4 (GA4) in samples of flower stalk of Dasylirion cedrosanum and vegetative tissue of Epithelantha micromeris. Purification of GA4 was carried out by solid phase extraction (SPE), in Epithelantha micromeris. In the chromatography method was obtaining a retention time of 2.1 min, using Hypersil GOLD C-18 column (100 × 4.6 mm dim and size particle 5 μ), mobile phase 50/50 acetonitrile/water and a flow 1.0 ml/min. Detection was carried out by a UV detector set at 205 nm, and a quantization limit of 0.4 mg/L. The obtained correlation coefficient was 0.995.