Most cryopreservation procedures are optimized using a small number of germplasm accessions. We classified the garlic (Allium sativum L.) accessions that were selected for our studies based on genotype as identified using amplified fragment length polymorphism markers. Although recovery was variable, shoots regenerated from a broad range of the accessions after cryo-exposure. Garlic shoot tips were excised from cloves, surface sterilized, and placed on media at 5°C for 2 days prior to cryopreservation. Shoot tips were then treated with sucrose-glycerol for 20 minutes, plant vitrification solution 2 (PVS2; 15% w/v ethylene glycol, 15% w/v DMSO, 30% w/v glycerol, 13.7% w/v sucrose) at 0°C, and then plunged on foils into liquid nitrogen slush. Explants were recovered in 1.2 M sucrose for 20 minutes and then plated onto Gamborg's B5 medium containing α-naphthaleneacetic acid (NAA) and 6-(-dimethylallylamino purine) (2-iP). Our results demonstrate that genotypically diverse accessions of garlic can be successfully cryopreserved.
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Document Type: Regular Paper
Publication date: 01 May 2004
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CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation
The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.