African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12291

Full Length Research Paper

The effect of different treatments on improving seed germination characteristics in medicinal species of Descurainia sophia and Plantago ovata

Tavili Ali*1, Pouzesh Hossein2, Farajolahi Asghar1, Zare Salman1 and Zare Chahooki Mohammad Ali1
1Department of Arid and Mountainous Regions Reclamation, Faculty of Natural Resources, University of Tehran, P.O. Box 31585-4314, Karaj, Iran. 2Member of Young Researchers Club, Islamic Azad University of Yasouj Uni.Iran.
Email: [email protected]

  •  Accepted: 06 July 2010
  •  Published: 27 September 2010


Creating optimal conditions for germination of medicinal plants seed is essential for their cultivation. Therefore, to evaluate the effect of different treatments on seed germination of two medicinal species, Descurainia sophia and Plantago ovatacollected in 2009 from Tehran Province, an experiment with a factorial randomized complete block design in 6 treatments with 4 replications was conducted. Treatments included KNO3 with concentrations of 0.1, 0.2 and 0.3%, acetylsalicylic acid with levels of 50 and 100 mg/l, prechilling (4°C for 10 days), thiourea with levels of 0.1 and 0.2%, boiling water for 5 and 10 min. To compare, distilled water was used as control. Results showed that the effect of different treatments on germination percentage of two medicinal species was significantly different (p < 0.05). It was shown that prechilling was the most effective treatment on seed germination of both species.     


Key words: Descurainia sophia, Plantago ovata, germination, acetylsalicylic acid, prechilling, thiourea and KNO3.


ABA, Abscisic acid; GR, germination rate; MGT, mean germination time.