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Micropropagation of axillary shoots of hybrid chestnut (Castanea sativa x C. crenata) in liquid medium in a continuous immersion system.

AuthorsCuenca, B.; Sánchez, C.; Aldrey, A.; Bogo, B. †; Blanco, B.; Correa, B. ; Vidal, N.
forced ventilation
large-scale propagation
Issue Date2017
CitationPlant Cell, Tissues and Organ Culture 131: 307-320 (2017)
AbstractA protocol for culturing chestnut axillary shoots with the basal sections continuously immersed in liquid medium was developed and the influence of various parameters was assessed: explant type and size, support material, bioreactor size and aeration regime. Shoots excised from eight selected chestnut genotypes were successfully cultured in 10 L bioreactors in liquid Murashige and Skoog medium with half strength nitrates and supplemented with 0.05 mg/L N6-benzyladenine and 30 g/L sucrose. Forced ventilation and the use of a support material were essential for producing healthy, non-hyperhydric shoots. High proliferation rates were achieved and good quality shoots ready for multiplication, rooting and acclimatization were obtained. Larger leaves showing higher levels of photosynthetic pigments were observed in shoots cultured in bioreactors, suggesting a certain degree of photoautotrophy in shoots cultured under forced ventilation. This is the first demonstration of the production of chestnut shoots in stationary liquid medium, indicating the feasibility of the method for large-scale propagation of the species.
Publisher version (URL)10.1007/s11240-017-1285-5
Appears in Collections:(IIAG) Artículos
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