Flowering industry is now expanded rapidly and requires the introduction of new cultivars to the market of plants. The introduction of new cultivars has an extensive and difficult process, so that the potential of cultivars in different areas has to be identified and then, the selection of varieties to be made. The present study was undertaken to determine the morphological diversity among the 12 varieties of carnation cultivated in the commercial greenhouse. The characteristics related to growth, flowering, quality, and yield were measured. The qualitative characters including the leaf color, fusarium wilt, petal density, and fragrance were measured based on the rating and coding. The Cream Viana, Noblesse Vilesse, and Orange Viana have emerged as promising cultivars with respect to flower yield and vase life. In addition, regarding the important characters of carnation such as the problems of calyx splitting and flower fragrance, the Nautilus cultivar was promising and might be cultivated in greenhouse and also could be used as a parent in the breeding programs. The correlation studies revealed that the flower yield has an inter-dependent relationship with the vegetative parameters like number of nodes, length and width of leaves, and diameter of stem. In addition, the vase life has a direct relationship with the morphological flowering traits such as flower diameter, length, width and number of petals. Hence, the selection of the above-mentioned stable characters in the promising cultivars will be helpful in improving the flower yield and these characters could be beneficial in the breeding programs.
