Sheath Blight Diseases Video

Photos of rice sheath blight disease caused by the fungus Rhizoctonia solani, including fungal signs and symptoms on the plant.

Complete video gallery of the rice Sheath Blight disease photographs:

Slide 1: Young culture of Rhizoctonia solani grown on potato dextrose agar showing mycelium and sclerotia formation.

Slide 2: Old culture of Rhizoctonia solani grown on potato dextrose agar showing darker mycelium and extensive sclerotia formation.

Slide 3: Rhizoctonia solani mycelium growing in agar (note right angle branching pattern).

Slide 4: Rhizoctonia solani mycelium grown on agar-coated microscope slides stained with cotton blue (note right angle branching pattern).

Slide 5: Electron micrograph of Rhizoctonia solani mycelium on a rice leaf showing mycelium growth and infection cushion formation.

Slide 6: Rhizoctonia solani mycelium growing from a sheath blight lesion allowing leaf-to-leaf and plant-to-plant movement in the field.

Slide 7: Early water-soaked sheath blight lesions on rice stems.

Slide 8: Older dried sheath blight lesions on rice stems.

Slide 9: Diversity of sheath blight lesions.

Slide 10: Severe sheath blight damage on rice stems.

Slide 11: Sheath blight lesion development showing early and late lesion development on rice leaves.

Slide 12: Typical snake skin-like lesion symptoms on rice leaves.

Slide 13: Severe sheath blight lesions on rice leaves at maturity.

Slide 14: Typical damage to rice leaves from sheath blight infection.

Slide 15: Late-season sheath blight damage to rice plants.

Slide 16: Severe sheath blight damage to rice.

Slide 17: Typical sheath blight symptoms on rice leaves with sclerotia development.

Slide 18: Sheath blight damage to rice head.

Slide 19: Sheath blight damage to rice flag leaf sheath and head with sclerotia development.

Slide 20: Older sheath blight leaf lesion with early stage sclerotial development.

Slide 21: Sclerotial development on sheath blight lesion.

Slide 22: Typical sheath blight “bird nest” damage in a rice field.

Slide 23: Arial view of sheath blight damage in a rice field showing windblown distribution of floating inoculum early in the season.

Slide 24: Lodging caused by sheath blight damage to the rice stems.

Slide 25: Sheath blight damaged susceptible (left) and healthy resistant (right) rice lines that were inoculated with Rhizoctonia solani.

Slide 26: Sheath blight-resistant and susceptible rice lines in a disease nursery.

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Click on the links above to return to the Sheath Blight home page or the Rice Diseases Photo Galleries home page.

11/5/2011 1:07:55 AM
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