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Epidermal formations of Cymbidium vitro- and exvitroplantlets

Author(s): Adriana PETRUS-VANCEA | Gheorghe Emil BANDICI | Anca BACIU | Cristian Felix BLIDAR | Liviu POP

Journal: Analele Universitatii din Oradea, Fascicula Biologie
ISSN 1224-5119

Volume: TOM XV;
Start page: 79;
Date: 2008;
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Keywords: stoma | vitroplantlets | exvitroplantlets | acclimatization | Cymbidium

Adaptation to septic medium is dependent to gas change between exvitroplantlets and outside medium, this is why we decided to study the Cymbidium and modifications which appear in vitroculture at stoma density, dimension and closing system, and also the capacity of this vitroplantlets to adaptation its antideshydratation defence system, during acclimatization period, using as standard measure those plants which were cultivated to septic medium. After results analyze we observed that the Cymbidium hybridum species have amphystomatical leaf only “in vitro” medium conditions, and to greenhouse plants and exvitroplantlets the leafs are hypostomatic. This situation is generated from his special nutrition which exists in vitrocultures. This fact was explained by Salisbury (1927) [8] and Schoch (1978) [9], who demonstrated that the stoma frequency may significant vary to some as ambient factors which modify the morphology and composition of leaf.
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