| Abstrakt: |
In this paper, the germination of seeds from three species of the genus Gladiolus was studied: G. imbricatus, G. byzantinus and G. tristis. The seeds used had different origins: the seeds of G. imbricatus and G. byzantinus come from the plants from the Floriculture collection of at the Faculty of Horticulture ("Ion Ionescu de la Brad" Iasi University of Life Sciences), and the seeds of G. tristis come from specialized companies. The seeds were stratified at 4°C for 44, 58, 74, 86 and 98 days. The seeds were germinated in Petri dishes in the germination chamber at different temperatures to trigger the germination (13-14°C, 17-19°C and 20-22°C). Data obtained showed that the germination percentage depend of Gladiolus specie, temperature and number of days of stratification. Thus, at G. byzantinus, the best germination rate was obtained at the temperature of 13-14°C, after 58 days of stratification; in the case of 74 days stratified seeds, the germination temperature did not affect the percentage of germinated seeds. In G. tristis, germination was favored by temperatures between 17-19°C. The seeds of G. imbricatus germinatedin a reduced percentageonly after 98 days of stratification, but regardless of the temperature. [ABSTRACT FROM AUTHOR] |
