Pycniospore

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Lettuce Diseases. a. Drop, h. Septoria leaf spot, c. same as b. but older spots, d. pycnida, e. pycniospores

Pycniospores are a type of

rust fungi.[1][2] They are produced in special cup-like structures called pycnia or pynidia. Almost all fungi reproduce asexually
with the production of spores. Spores may be colorless, green, yellow, orange, red, brown or black.

Other types of spore

conidiophores, d. stylospores
Sporangiospores

Sporangiospores (spore:spore, angion:sac) are spores formed inside the sporangium
which is a spore sac.

Conidia

Conidia (singular: conidium) are spores produced at the tip of special branches called conidiophores.

Oidia

Oidia (singular:

egg
).

Chlamydospores

Chlamydospores (chlymus: mantle) are produced like oidia but differ from oidia in being thick walled. They are either terminal or intercalary.

References

  1. ISBN 978-0-19-960057-1
    .
  2. ISSN 0027-5514
    .


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