Morphological effects of induced polyploidy in Dendrobium nobile Lindl. (Orchidaceae)
| Autor: | Mívia Rosa de Medeiros Vichiato, Marcelo Vichiato, Moacir Pasqual, Filipe Almendagna Rodrigues, Daniel Melo de Castro |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Crop Breeding and Applied Biotechnology, Vol 14, Iss 3, Pp 154-159 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1518-7853 1984-7033 |
| Popis: | In general, polyploidy in plants causes an increase in the size of vegetative structures. This work aimed to compare diploid plants (2n = 2 x = 38) and induced tetraploid plants (2n = 4 x = 76) of Dendrobium nobile Lindl. through the evaluation of the morphological characteristics of flowers, leaves and pseudobulbs. We evaluated the parameters height and diameter of pseudobulbs; width and length of leaves and flowers (sepals, petals and labella); and diameter of flowers. The induced polyploidization resulted in the increasing the number of internodes (19.9%) and floral pieces, with greater height of the flower (4.5%) and width of the lip (18.5%) decrease in the number of flowers per pseudobulb (40.9%) and the diameter of the pseudobulb (64.9%) and delayed flowering. |
| Databáze: | Directory of Open Access Journals |
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