In vitro proliferation and minimum growth storage of fraser photinia: Influences of different medium,sugar combinations and culture vessels |
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Authors: | Hü lya Akdemir,Ergun KayaYelda Ozden |
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Affiliation: | Gebze Institute of Technology, Faculty of Science, Department of Biology, Plant Biotechnology Laboratory, Istanbul cad. No: 101, 41400 Kocaeli, Turkey |
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Abstract: | Protocols for the in vitro proliferation and storage of fraser photinia were developed by comparing 6-benzyladenine (BA) concentrations (0.5–4 mg/L) together with different media formulations [Murashige and Skoog (MS) media and Quoirin and Lepoivre (QL) media], sugar combinations (sucrose and mannitol), culture vessels (baby food jars and vitrovents) and methods (synthetic seed technology and slow growth storage). The best responses in terms of both proliferation percentage and multiple shoot formation were obtained in QL medium containing 1 mg/L BA. Synthetic seed production was optimized by encapsulating shoot apices in 3% sodium alginate. Encapsulated shoot apices could be maintained up to 6 months at 4 °C in dark with 91.6% sprouting in MS medium. Microshoots were stored at 4 °C up to 15 months on sucrose and mannitol containing QL medium in both baby food jars and vitrovents without subculture. The stored material could be recovered and multiplied normally in 1 mg/L BA supplemented QL medium. Both in vitro propagated and conserved microshoots were rooted (∼75%) on QL medium with 1 mg/L indole butyric acid (IBA). Optimized synthetic seed and slow growth storage system can be used for short and medium-term storage of fraser photinia germplasm. |
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Keywords: | AL, abscised leaves BA, 6-benzyladenine FL, final microshoot length FW, fresh weight GL, green leaves GM, green microshoot GR, relative growth rate IBA, indole butyric acid LSD, least significance difference LSI, leaf senescence index M, mannitol MS, Murashige and Skoog Na-Alg, sodium alginate QL, Quoirin and Lepoivre SFC, shoot forming capacity SP, shoot proliferation SUC, sucrose |
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