Assay of cis- and trans-isomers of abscisic acid in ash (Fraxinus excelsior) seeds by gas chromatography

aba acide abscissique agricultural chemicals analisis analyse analyse chimique analysis animal developmental stages arbre arbre forestier arbre pour bois de construction chemical analysis chromatographie chromatography contortae cromatografia crops cultivos developmental stages dicotiledoneas dicotyledons dormance dormancy economic plants etapas de desarrollo etapas de desarrollo de la planta etapas del desarrollo animal forest trees fraxinus growth inhibitors inhibidores del crecimiento latencia methode methods oleaceae ornamental plants ornamental trees plant developmental stages plant growth substances plantas plantas ornamentales plante plante de culture plante ornementale plante pour construction plants procesamiento processing produit agrochimique propagation materials retardateur de croissance seed semence semillas separating separation structural crops timber trees traitement trees