RESPONSE OF MEDICINAL PLANTS TO SEED PRIMING: A REVIEW
|Corresponding Author: Bahareh Dalil, E-mail: [email protected] Tel : +982414248542|
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Medicinal plants were considered as rich sources of components which can be used in pharmaceutical industry. Often seed germination of medicinal plants and their seedling establishment are difficult in the field. A simple way to improve seed germination and seedling establishment and consequently field performance of medicinal plants is seed priming. During priming, seeds are partially hydrated, so that pre-germinative metabolic activities proceed, while radicle protrusion is prevented, then are dried back to the original moisture level. Therefore, primed seeds are physiologically closer to germination and growth after planting than unprimed seeds. Various pre-hydration or priming treatments have been employed for invigoration of medicinal plants. This review describes some effects of seed priming on germination parameters, filed performance and essential oil of medicinal plants under favorable and unfavorable conditions.