Identification of Physiological Races of Phytophthora infestans on Tomato inEighteen Provinces of China Genetic analysis of resistance to Puccinia striiformis f. sp. tritici of Chinese differential hosts Lovrin 10 and Lovrin 13 Pathogenic Differentiation of Pseudopeziza medicaginis Identification of Physiological Races of Phytophthora infestans on Tomato inEighteen Provinces of China Genetic analysis on the composition of resistance gene Genetic analysis of resistant genes to stripe rust in Chinese wheat differential host, Abbondanza