Symptoms of Myrothecium on Umbelliferae

• Organs attacked :

• Symptoms
  • Rather circular moist to greasy lesions gradually spreading.
  • From beige to pale brown in color, they progressively become necrotic (figure 1).
  • A more or less marked and diffuse yellow halo sometimes surrounds them.
  • Elongated canker lesions may appear on petioles. (figure 2)

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• Signs : presence of greyish to black sporiferous pads: sporodochia (figure 3). These structures are made up of numerous phialides which form at their end cylindrical conidia, hyaline to slightly olive-coloured.
• Possible confusion : Sigatoka

• Production areas affected :

•  Myrothecium spp. reported on umbelliferae :