Germinación y crecimiento inicial de Habranthus gracilifolius y Rhodophiala bifida, amarilidáceas nativas con potencial ornamental
False zephyr (Az-del campo) (Habranthus gracilifolius) and hurricane lily (Az-colorada) (Rhodophiala bifida) are native Argentinean species with ornamental potential value, but there is not enough information about these species. To establish the germination aptitude and the most suitable incu...
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| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
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| Autores principales: | , |
| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=3495 |
| Sumario: | False zephyr (Az-del campo) (Habranthus
gracilifolius) and hurricane lily (Az-colorada)
(Rhodophiala bifida) are native Argentinean
species with ornamental potential value,
but there is not enough information about
these species. To establish the germination
aptitude and the most suitable incubation
regime, as well as the growth of leaves and
bulbs, a germination test was performed and
the seedlings were cultivated in pots during
a year. Four incubation regimes were used:
constant temperature of 20°C, or alternating
temperatures of 10°/20°C or 20°/30°C, all with
8 hours of light, and alternating of 10°/20°C
in darkness. Seeds of both species had a
neutral reaction to light and at temperatures
of 20°C or 10°/20°C, the energy and the final
germination percentage were higher than 75
and 92%, respectively, but under 20°/30°C
the germination was delayed. From autumn to
the end of spring the plants of Az-del campo
showed up to 4 leaves and Az-colorada
2.5 leaves/plant, but in summer both species
had not leaves at all. The bulbs showed
lineal growth and the rates of Az-del campo
(width = 0.022; length = 0.049 mm.day-1)
were higher than those of the Az-colorada
(width = 0.011; length = 0.014 mm.day-1).
The seed multiplication is effective but both
species need more than a year from seedling
emergency to reach reproductive stage.
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