The influence of corm size on phenology and ornamental value of Gladiolus byzantinus

Abstract

The behavior in culture of the Gladiolus byzantinus species, in the ecological conditions of the NE area of Romania, has been studied for several years at the University of Agricultural Sciences and Veterinary Medicine Iaşi. In this paper we determined the way in which G. byzantinus corms influence the growth and development of plants, respectively their decorative value. The establishment of experimental crops it was made in November 2019, using corms with different mass: > 10g (V1), 7-9 g (V2) and <7g (V3). Observations and determinations performed in 2020 showed that from corms with a mass > 10g (V1) were obtained plants with the highest number of shoots, flower stems and flowers. At the variants from the smaller corms, respectively V2 and V3, the results were inferior, except for the height of the floral stem. From a phenological point of view, the beginning in vegetation, the formation of floral stems, the onset and duration of flowering, were to the advantage of the V1 variant.