Micropropagation of Vitex agnus-castus, (Verbenaceae)—a valuable medicinal plant

  • K. Balaraju
  • P. Agastian
  • J. P. Preetamraj
  • S. Arokiyaraj
  • S. Ignacimuthu


This study describes in vitro shoot induction and plant regeneration from a mature apical meristem and nodal explants of the endangered medicinal shrub Vitex agnus-castus. Multiple shoots were induced directly from the axis of nodal and apical meristem explants on Murashige and Skoog (MS) medium containing 3% sucrose and different concentrations (1.0, 1.5, 2.0, and 2.5 mg/l) of 6-benzyl aminopurine (BAP) in combination with Kinetin (Kin) and α-naphthalene acetic acid (NAA), both at 0.1 mg/l. BAP and Kinetin were used as supplements to MS basal medium, either individually or in combination with auxins. The optimal concentration of BAP for inducing bud break was found to be 2.0 mg/l when Kinetin was at 0.1 mg/l. Regeneration frequency was highest for both apical meristem and nodal explants (94.5% and 90.3%, respectively) when explants were cultured on MS medium supplemented with BAP (2.0 mg/l) and Kin (0.1 mg/l). A maximum of 7.7 ± 0.4 and 6.7 ± 0.2 shoots were obtained per explant for apical meristem and nodal explants, respectively. Regenerated shoots, transferred to MS medium supplemented with either 1.0 or 1.5 mg/l BAP combined with 0.1 mg/l GA3, showed maximum elongation of 6.7 ± 0.4 and 6.0 ± 1.3 cm in apical meristem and nodal explants, respectively. In vitro regenerated shoots transferred to half-strength MS medium supplemented with 0.1 mg/l IBA induced 90.4% of the shoots to form roots after 30–35 d of culture. Up to 80% of the regenerated shoots were successfully established in soil in the greenhouse.


Apical meristem Micropropagation Nodal explant Vitex agnus-castus 


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Copyright information

© The Society for In Vitro Biology 2008

Authors and Affiliations

  • K. Balaraju
    • 1
  • P. Agastian
    • 2
  • J. P. Preetamraj
    • 2
  • S. Arokiyaraj
    • 2
  • S. Ignacimuthu
    • 1
  1. 1.Entomology Research InstituteLoyola CollegeChennaiIndia
  2. 2.Department of Plant Biology and Biotechnology, School of Life SciencesLoyola CollegeChennaiIndia

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