RESEARCH ON PHYSIOLOGICAL RACES OF PIRICULARIA ORYZAE (PRELIMINARY REPORT) - JAPAN, 1961

Abstract

The distribution of disease spots on different levels of leaves was examined and the largest number of disease spots was found to be present on the highest leveled leaf, regardless of the types of spots. The ideal spore concentration was thought to be 0.5 to 1 million spores per cubic centimeter and 50 cc of the suspension was used to spray two hundred rice plants. The injection inoculation into the sheath of leaves revealed a stronger virulence as compared with the spray inoculation method, and this tendency is more marked with some rice species.

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Document Details

Document Type
Technical Report
Publication Date
Feb 14, 1963
Accession Number
AD0402782

Entities

People

  • Kazuo Goto
  • Tatsu Yamanaka

Organizations

  • United States Army Biological Warfare Laboratories

Tags

DTIC Thesaurus Topics

  • Biological Laboratories
  • Calcium Compounds
  • Classification
  • Culture Media
  • Discoloration
  • Diseases And Disorders
  • Environment
  • Fungi
  • Identification
  • Inoculation
  • Necrosis
  • Pathogenic Bacteria
  • Plants
  • Potassium Chloride
  • Resistance
  • Test And Evaluation
  • Virulence

Readers

  • Mathematics or Statistics
  • Microbial Pathology
  • Plasma Physics.