In vitro propagation and cryostorage of Syzygium francissi (Myrtaceae) by the encapsulation-dehydration method
- Publication Type:
- Journal Article
- Citation:
- In Vitro Cellular and Developmental Biology - Plant, 2004, 40 (4), pp. 403 - 407
- Issue Date:
- 2004-07-01
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
 | 2004000044.pdf | 1.19 MB |
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An efficient procedure for the in vitro propagation and cryogenic conservation of Syzygium francissi was developed. The maximum number of shoots per explant was obtained on a Murashige and Skoog (MS) medium supplemented with 4.5 μM benzyladenine and 0.5 μM indole-3-butyric acid (IBA). The in vitro-propagated shoots produced roots when transferred to MS medium containing IBA, indole-3-acetic acid, or naphthaleneacetic acid at various concentrations. Rooted microshoots were transferred to a coco-peat, perlite, and vermiculite (1:1:1) mixture, and hardened off under greenhouse conditions. Ninety-five percent of rooted shoots successfully acclimatized in the greenhouse. Shoot tips excised from in vitro-grown plants were successfully cryostoraged at -196°C by the encapsulation-dehydration method. A preculture of formed beads on MS medium containing 0.75 M sucrose for 1 d, followed by 6 h dehydration (20% moisture content) led to the highest survival rate after cryostorage for 1 h. This method is a promising technique for in vitro propagation and cryopreservation of shoot tips from in vitro-grown plantlets of S. francissi germplasm.
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