Abstract
Efficient plant regeneration through somatic embryogenesis was established for safflower (Carthamus tinctorius L.) cv. NARI-6. Embryogenic calli were induced from 10 to 17-d-old cotyledon and leaf explants from in vitro seedlings. High frequency (94.3 %) embryogenic callus was obtained from cotyledon explants cultured on Murashige and Skoog’s germination (MSG) basal medium supplemented with thidiazuron, 2-isopentenyladenine and indole-3-butyric acid. Primary, secondary and cyclic somatic embryos were formed from embryogenic calli in a different media free of plant growth regulators, however, 100 % cyclic somatic embryogenesis was obtained from cotyledon derived embryogenic calli cultured on MSG. Somatic embryos matured and germinated in quarter-strength MSG medium supplemented with gibberellic acid. Cotyledons with root poles or non root poles were converted to normal plantlets and produced adventitious roots in rooting medium. Rooted plants were acclimatized and successfully transferred to the field.
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Abbreviations
- B5 :
-
Gamborg medium
- CDEC:
-
cotyledon derived embryogenic calli
- 2,4-D:
-
2,4-dichlorophenoxyacetic acid
- GA3 :
-
gibberellic acid
- IBA:
-
indole-3-butyric acid
- 2-ip:
-
2-isopentenyladenine
- KN:
-
kinetin
- LDEC:
-
leaf derived embryogenic calli
- MSG medium:
-
Murashige and Skoog’s germination medium
- NAA:
-
naphthalene-acetic acid
- PCD:
-
programmed cell death
- PEM:
-
proembryogenic mass
- SH:
-
Schenk and Hildebrandt
- SE:
-
somatic embryogenesis
- TDZ:
-
thidiazuron (1-phenyl-3-(1,2,3-thidiazol-5-yl)-urea
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Vijaya Kumar, J., Ranjitha Kumari, B.D. & Castaño, E. Cyclic somatic embryogenesis and efficient plant regeneration from callus of safflower. Biol Plant 52, 429–436 (2008). https://doi.org/10.1007/s10535-008-0087-3
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DOI: https://doi.org/10.1007/s10535-008-0087-3