Isolation and structural elucidation of a bioactive saponin from tubers of Bolbostemma paniculatum Study on fast screening antifungus activity of endophytes from Pseudolarix kaempferi Studies on constituents from the fermentation of Alternalia sp. STUDIES ON THE CHANGE AND COMPOSITIONS OF PYRICULARIA ORYZAE PATHOGENIC STRAINS ON HYBRID RICE STUDIES ON SLOW-BLASTING RESISTANCE OF RICE CULTIVARS TO PYRICULARIA ORYZAE CAV. DNA Fingerprintind and It’s Relationship with the Pathogenicity in Rice Blast Fungus Studies on the Chemical Constituents from Marine Brown Alga Ishige okamurai (3) THE GENETICS ANALYSIS OF RICE MUTANT R917 WITH RESISTANCE TO RICE BLAST(Pyricularia oryzae) Studies on the Inheritance of the Resistance of 4 Somalonal Mutant Lines of Rice to Blast STUDIES ON TOLERANCE OF PYRICULARIA ORYZAE CAV.TO ISOPROTHIOLANE Resistance analysis and improvement of rice varieties by gene pyramiding Screening of Antimitotic Portions from Sea Hare Using Conidia of Pyricularia Oryzae The Application of α-Picolinic Acid on the Screening of Rice Blast-Resistant Variants Comparison of Pathogenicity of Pyricularia oryzae under Different Genetic Backgrounds