The Evaluation of Morphologic Diversity in Some Iran Wild Tulip (Tulipa spp. L.) Populations Using Morphological Traits

Document Type : Research Article

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Tulip (Tulipa spp. L.) is one of the most important flower bulbs worldwide with high distribution in many parts of Iran. This genus belongs to the family Liliaceae and consists of about 100 species of them 19 species are native to Iran. In this study, morphological diversity of 49 populations within 9 species of tulip, which had been collected from 12 provinces, were evaluated. The results of quantitative morphological traits (total stem length, plant height, stem diameter, leaf length, leaf area, leaf number, petal length, petal area, stamen length, pistil length, bulb length, bulb diameter) showed, effect of species and populations were significant in all traits, and also characteristics of petal area and petal length, showed the highest and lowest coefficient of variation,  47.09 and 6.77 respectively. The cluster analysis in the four distance divided populations into seven groups. A high correlation coefficient was observed in most of the traits. The results of the correlation coefficient indicated, the highest correlation (97%) between total stem length and plant height which was significant at 1% level. Evaluation of flower color as a qualitative trait observed,  high color variation between species and showed high variation in color intensity within populations. The results can be used for germplasm management and also to determine the relationship between species.

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