IntroductionThe term 'eggplant' applies to a large number of species of the genus Solanum (cultivated, semiwild, or wild) that bear fleshy berries (Daunay et al., 2001). The most common species of cultivated eggplant is Solanum melongena L. in the Asian and Mediterranean basin (brinjal eggplant or aubergine). Eggplant is one of the most important vegetables worldwide. It ranks fourth in world vegetable production after tomato, cucumber, and pepper. According to the data of the Food and Agriculture Organization, 42,944,212 t of eggplants were produced on an area of 1,676,893 ha in 2009 worldwide (http://faostat.fao.org). The highest eggplant production in the world is in China (25,912,524 t), which meets 60% of the world's production. Turkey comes fifth in the world after India, Egypt, and Iran, with 846,998 t of production (http://www.tuik.gov.tr/).The primary center of diversification of S. melongena is in Southeast Asia. The Indo-Burmese region could be considered the historical center of eggplant domestication. In Turkey, eggplant cultivation began in the 16th century. The Mediterranean basin is a secondary center of diversification of this species (Daunay et al., 2001). Turkey is one of the most important diversity centers for cultivated eggplants because of the adaptation of eggplant to diverse ecological conditions. Eggplants grown in Turkey are thought to be a very valuable source in terms of improvement because of their fruit type, color, agronomic characteristics, and genetic structures (Demir et al., 2010;Tümbilen et al., 2011). It is very important to breed new commercial and agronomical varieties from these rich genetic resources.The significance of haploid plants, as well as the fully homozygotic lines of double haploids originating from them, has been increasing for numerous plant species in modern breeding programs (Nowaczyk and Kisiala, 2006). The main method of obtaining haploid plants in eggplant