During the period 2010–2011 the response of pea samples of different origin to the causal agent of fusarium wilt – Fusarium oxysporum f.sp. pisi was studied. The study was carried out to establish sources of resistance to the pathogen. The research was done in the greenhouse of the Institute of Plant Genetic Resources – Sadovo by applying artificial infection and in the experimental field of the Maritsa Vegetable Crops Research Institute – Plovdiv under natural infection conditions with 94 pea lines and varieties. Fifty genotypes showed high resistance (0.0% wilted plants) to the pathogen under both laboratory and field conditions. Under open field conditions and against a natural infection background seventy-six genotypes responded with high resistance to the pathogen (0.0% wilted plants). The samples which showed high resistance under laboratory and field conditions can be successfully used in a combination selection as donors for the creation of pea varieties resistant to the cause of fusarium wilt – Fusarium oxysporum f.sp. pisi.