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Submission

Bipolaris oryzae on Oryza sativa

  • Credits / Owner: Md. Azizul Hoque, Technical Manager, MNT Seed Testing Lab. (BDML0300), Lal Teer Seed Limited
  • Submission date: 2026-01-22 05:55:15
  • Submission ID: #190

Pathogen

Scientific name

Bipolaris oryzae

Genus

Bipolaris

EPPO code

COCHMI

Common name

Brown spot of Rice

Synonyms

Cochliobolus miyabeanus

Crop

Oryza sativa

More about Bipolaris oryzae

Submission

Description

Microscopic observation of Bipolaris oryzae conidia. (A) Single conidium showing characteristic distoseptate morphology, pale brown pigmentation, and slightly curved (falcate) shape. (B) Multiple mature conidia from a slide mount, illustrating the typical "cigar-shaped" profile and variation in septation (5–12 septa). These spores are the primary inoculum for rice brown spot disease.


Sterilant: NA
Sterilant time: NA
Growth time: 7 days
Lighting: alternating nuv 12 h darkness & 12 h light.
Agar: Blotter Method
Sample origin: Bangladesh