Effect of DNA Fraction from Potato Interspecific Hybrid having R₁ gene on the Conidial Germination of Phytophthora infestans

Abstract

Water solution of DNA fraction of potatoes inhibited the conidial germination of Phytophthora infestans. Susceptible lesions were observed on the interspecific hybrid 96-56 (R₁ gene) inoculated with the conidial suspension of Phytophthora infestans (Race 1) germinated both in the water solution of DNA fraction from interspecific hybrid 96-56 (R₁ gene) and in that of 1506-b (9) (R₁R₄ genes).