Sunflower (Helianthus annuus L.) Advanced Breeding Materials in Field Trials in Different Geographical Regions of Turkey Journal title: MAS Journal of Applied Sciences Authors: Abdullah ÇİL, Ayşe Nuran ÇİL, Vakas ŞAHİN, Yılmaz YAŞAR Subject(s): Chemistry, Computer and Information Science, Engineering, Environmental Sciences, Agricultural Science