The study was carried out in 2013 and 2014 to determine the agronomic and morphological characteristics of different wild type sunflower (Helianthus L. spp.) genotypes at Uludağ University Faculty of Agronomy’s field and green house conditions. The 45 wild sunflower genotypes supplied from different sources (USDA-America; Germany, Canada) were used in the study. One month germinated seedlings with mechanical drawing application in a 1:1 portion soil and peat mixture violin were grown in field conditions. Some of the agronomic (plant height, the number of branches, the number of leaves, the main head diameter, stem thickness, length of branches) and morphological (Ray florets, Head angle, Head shape, Flowering uniformity, Uniformity of maturity, Bract shape, Pollen fertility, Pubescence at general appearance, Head flower color, Petiole position, Type of branching) characteristics were observed and measured in two years. The agronomic variation on the observed characters was found highly variable within wild sunflower genotypes. The plant height, the number of branches, the number of leaves, the main head diameter, stem thickness, length of branches values changed respectively between 39 and 367 cm, 6 and 52, 3 and 39, 0.5 and 3.40 cm, 0.50 and 2.91 cm, 12 and 194 cm. There were no clear differences within observed morphological characters.
Contact: Prof. Dr. Nazan DAĞÜSTÜ, Uludag University, Faculty of Agriculture, Department of Field Crops, 16059 Görükle Campus, Bursa TURKEY Tel: +90 224 2941518 E-mail:ndagustu@uludag.edu.tr