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1 July 2004 IN VITRO PROPAGATION AND CRYOSTORAGE OF SYZYGIUM FRANCISSI (MYRTACEAE) BY THE ENCAPSULATION–DEHYDRATION METHOD
M. AWAD SHATNAWI, KRYSTYNA A. JOHNSON, FRASER R. TORPY
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Abstract

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 micro-shoots 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.

M. AWAD SHATNAWI, KRYSTYNA A. JOHNSON, and FRASER R. TORPY "IN VITRO PROPAGATION AND CRYOSTORAGE OF SYZYGIUM FRANCISSI (MYRTACEAE) BY THE ENCAPSULATION–DEHYDRATION METHOD," In Vitro Cellular and Developmental Biology - Plant 40(4), 403-407, (1 July 2004). https://doi.org/10.1079/IVP2004551
Received: 13 May 2003; Accepted: 1 March 2004; Published: 1 July 2004
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KEYWORDS
Acclimatization
cryostorage
germplasm storage
in vitro preservation
In vitro rooting
Syzygium francissi
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