Abstract

  Origanum sipyleum L. (Lamiaceae) is an endemic species of the Western Anatolia, Turkey. Essential oils of oreganos are utilized in pharmaceutical and cosmetic industries. A micropropagation protocol was developed using seedlings-derived explants. Shoot apices of 17d-old seedling were cultured and shoots multiplied on Murashige-Skoog modified (MSM) containing 550 mg/l of CaCl2 for sustained growth. Multiple shoots (3.7 ± 0.3 shoot/explant) were produced on medium containing 1 mg/L benzylaminopurine (BAP). On subculturing rated of shoot multiplication increased to 7.8 ± 0.4. 96% of the shoots rooted in a culture medium with 0.5 mg/L indolebutyric acid (IBA) after 3 weeks. The plantlets were acclimatized into outdoor conditions. 76% of these survived in the greenhouse. These in vitro derived microplants are already under the evaluation for their essential oil composition.     Key words: Origanum sipyleum, micropropagation, benzylaminopurine, indolebutyric acid.

Highlights

  • Oregano (Origanum sp.) is a perennial herb of the family Lamiaceae

  • We report here on development of tissue culture protocol for propagation using apical tips of this species

  • A few seeds of O. sipyleum germinated within one week on water-agar

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Summary

Full Length Research Paper

Origanum sipyleum L. (Lamiaceae) is an endemic species of the Western Anatolia, Turkey. (Lamiaceae) is an endemic species of the Western Anatolia, Turkey. Essential oils of oreganos are utilized in pharmaceutical and cosmetic industries. A micropropagation protocol was developed using seedlings-derived explants. Shoot apices of 17d-old seedling were cultured and shoots multiplied on Murashige-Skoog modified (MSM) containing 550 mg/l of CaCl2 for sustained growth. Multiple shoots (3.7 ± 0.3 shoot/explant) were produced on medium containing 1 mg/L benzylaminopurine (BAP). On subculturing rated of shoot multiplication increased to 7.8 ± 0.4. 96% of the shoots rooted in a culture medium with 0.5 mg/L indolebutyric acid (IBA) after 3 weeks. 76% of these survived in the greenhouse. The plantlets were acclimatized into outdoor conditions. These in vitro derived microplants are already under the evaluation for their essential oil composition

INTRODUCTION
Plant material
Transplantation subsrate
Germination and growth of seedlings
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