RESULTS OF SUITABLE MATERIALS FOR PROPAGATING GLADIOLUS VARIETY CF.21.09 USING CORMS DIVISION IN QUANG NINH PROVINCE

Abstract

The CF.21.09 gladiolus variety is a promising new flower cultivar developed by the Fruit and Vegetable Research Institute through sexual hybridization. This variety is being widely propagated in Quang Ninh province using corm division. To determine suitable propagation materials for gladiolus CF.21.09, the study conducted experiments in two propagation stages: medium-sized corm production and commercial corm production. The results showed that using in vitro cormels for propagating CF.21.09 provided the the higest propagation efficiency, with commercial corms reaching rate of 81.8% and a high multiplication rate of 47.3 cormels per plant. In the commercial corm production stage, using propagation materials from medium-sized corms (4 - 6 cm in circumference) resulted in higher-quality corms than the control variety, with an average corm diameter of 3.6 cm and a mass of 339.6 kg per 360 m². The intermediate products were cormels, with 31.7 cormels per plant, and a total mass of 162.6 kg of cormels per 360 m².