Diseases

Helminthosporiosis of Opium Poppy

Papaver somniferum L.

A fungal disease of opium poppy caused by Helminthosporium papaveris, characterized by leaf spotting, capsule deformation, and potential seedling death.

In the reference 8 varieties crop Opium poppy, where this is mentioned in the description.

The causative agent of the disease is the fungus Helminthosporium papaveris Sawada, also known as Dendryphion penicillatum (Corda) Fr. or Bipolaris papaveris, whose teleomorph stage is classified as Pyrenophora calvescens Sacc.

Symptoms appear as black or black-brown angular spots on leaves and stems with sporulation. In young plants, the fungus causes root rot and damping-off, while in mature specimens, it infects the vascular system of the stem, leading to the deformation and underdevelopment of seed capsules.

General information about the subject — on the page Helminthosporiosis.

Sources6

Varieties of Opium poppy mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.