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Free Content Effect of Shooting Medium and Source of Material On Grapevine (Vitis Vinifera L.) Shoot Tip Recovery After Cryopreservation

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BACKGROUND: Selecting experimental material at the optimal physiological stage is of paramount importance for successful cryopreservation. OBJECTIVE: The study was to investigate the effect of the physiological state of grapevine buds on their regrowth after liquid nitrogen exposure. METHODS: In a first set of experiments, we tested the regrowth of cryopreserved buds sampled from microcuttings cultured on shooting medium containing benzylaminopurine or zeatin riboside for various durations. In a second set of experiments, we studied the regrowth after liquid nitrogen exposure of buds sampled from different positions on the stem of in vitro plantlets. RESULTS: Regrowth of cryopreserved buds sampled from microcuttings was higher (30%), compared to buds sampled directly from in vitro plantlets (23%), for all culture durations of microcuttings on shooting medium tested (2-6 weeks). Addition of cytokinin in the shooting medium improved regrowth of cryopreserved buds compared to buds sampled from microcuttings cultured on medium devoid of growth regulators; however similar results were obtained with the two cytokinins tested. Buds sampled on nodes 3-4 and 6-7 (from the top of the stem) displayed higher regrowth compared to shoot tips. No significant differences were noted in regrowth after cryopreservation between buds sampled from microcuttings produced from the terminal node, or nodes 3-4 and 6-7. CONCLUSION: The physiological state of the plant material is important for cryopreservation success. Actively growing buds sampled from microcuttings displayed higher regrowth compared to buds sampled directly on in vitro plantlets.

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Document Type: Research Article

Publication date: January 1, 2014

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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.

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