MOLECULAR MARKER ASSISTED SELECTION FOR Phytophthora capsici Leon. RESISTANCE LINES IN PEPPER (Capsicum annuum L.)

The most important diseases that cause loss of productivity in all areas of pepper production in the world and the limitation of cultivation are Phytophthora crown blight of pepper (Phytophthora capsici Leon.). The disease is a soil borne pathogen, and its challenge is difficult. Selection of varieties resistant to diseases of soil-borne plant pathogens is the most efficient, economical and sustainable method. In this study, the resistance of Phytophthora crown blight (Phytophthora capsici Leon.) disease on 95 pepper genotype in terms of yield and some quality characteristics was investigated by using SCAR marker (OpD04.717). In the study, pepper lines in 7 pepper genotype F2 population showed durability band at 717 bp of agarose gel, while 88 pepper genotype were found to be sensitive. As a result of molecular studies, 7 pepper genotype resistant to Phytophthora capsici Leon. were also confirmed by classical test using seedling immersion method. In the study, as a result of molecular and classical tests, Phytophthora capsici Leon. is determined to be resistant to pepper lines in the hybridization programs to obtain new varieties and will be used as a parent or father will contribute to improvement studies.