Abstract
Different explants of Miscanthus x ogiformis Honda ‘Giganteus’ were tested in order to develop an efficient tissue culture system. Shoot apices, leaf and root sections from in vitro-propagated plants, and leaf and immature inflorescence sections from 6-month-old greenhouse-grown plants were used. The explants were cultured on Murashige and Skoog medium supplemented with 4.5, 13.6, 22.6 or 31.7 μM 2,4-dichlorophenoxyacetic acid. Three types of callus were formed but only one was embryogenic and regenerated plants. Callus induction and formation of embryogenic callus depended on the type and developmental stage of the explants. Shoot apices formed the highest percentage of embryogenic callus. There was a difference in the formation of embryogenic callus between leaf explants from in vitro-propagated shoots and greenhouse-grown plants. The best results were obtained from newly formed leaves of in vitro-propagated shoots and older leaves of greenhouse-grown plants. Immature inflorescences smaller than 2.5 cm produced a higher percentage of embryogenic callus than larger more mature inflorescences. Embryogenic callus derived from immature inflorescences had the highest regeneration capacity. Differences in 2,4-dichlorophenoxyacetic acid concentrations had no significant effect on callus induction, embryogenic callus formation and plant regeneration.
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Abbreviations
- MS:
-
Murashige & Skoog
- 2,4-d :
-
2,4-dichlorophenoxyacetic acid
- BA:
-
benzyladenine
- NAA:
-
1-naphthaleneacetic acid
- PPFD:
-
photosynthetic photon flux density
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Holme, I.B., Petersen, K.K. Callus induction and plant regeneration from different explant types of Miscanthus x ogiformis Honda ‘Giganteus’. Plant Cell Tiss Organ Cult 45, 43–52 (1996). https://doi.org/10.1007/BF00043427
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DOI: https://doi.org/10.1007/BF00043427