Abstract
The present study describes the micropropagation of Picrorhiza kurroa, (commonly known as kutki) an endangered medicinal herb of the temperate Himalayas and a source of hepatoprotective picrosides. In vitro shoot multiplication was achieved through sprouting of axillary buds using nodal segments and leaf tissue. For shoot regeneration, the hormone combinations kinetin (2.0 mg l−1) and Kinetin + Indole-3-butyric acid (IBA) (2.0 mg l−1 + 0.50 mg l−1) with leaf explant was found superior. Interestingly, the basal MS medium gave 99.94 % response (direct proliferation) with nodal explant. The medium supplemented with IBA (1.0 mg −1) was found best for rooting of regenerated shoots. Nodal segments plated on the medium supplemented with TDZ + IBA (0.11 mg −1 + 0.50 mg −1) formed somatic embryos, however further regeneration could not be achieved. The in vitro raised plantlets were hardened and successfully established in the glass house conditions.
Abbreviations
- 2,4-D:
-
2,4-Dichlorophenoxyacetic acid
- SAP:
-
6-benzyl amino purine
- IBA:
-
Indole-3-butyric acid
- MS:
-
Murashige and Skoog medium
- NAA:
-
Napthaleneacetic acid
- TDZ:
-
Thidiazuron
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Sharma, S., Katoch, V., Rathour, R. et al. In Vitro Propagation of Endangered Temperate Himalayan Medicinal Herb Picrorhiza kurroa Royle ex Benth using Leaf Explants and Nodal Segments. J. Plant Biochem. Biotechnol. 19, 111–114 (2010). https://doi.org/10.1007/BF03323447
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DOI: https://doi.org/10.1007/BF03323447