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TANDA PENYAKIT

TANDA PENYAKIT. Meliputi segala struktur fisik patogen yang terdapat pada tanaman sakit atau bagian tanaman yang menunjukkan gejala penyakit. SIGN of FUNGI. Leaf spot on groungnut. Rust on groundnut. Mycellium and sclerotia of Sclerotium rolfsii on potato.

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TANDA PENYAKIT

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  1. TANDA PENYAKIT Meliputi segala struktur fisik patogen yang terdapat pada tanaman sakit atau bagian tanaman yang menunjukkan gejala penyakit

  2. SIGN of FUNGI Leaf spot on groungnut

  3. Rust on groundnut

  4. Mycellium and sclerotia of Sclerotium rolfsii on potato Rhizomorph of Armillaria sp. Uredinia of Puccinia graminia f. sp. tritici; right: SEM of single uredinium of Puccinia recondita synnemata of Ophiostoma (Graphium)ulmi

  5. Pseudothecium of Venturia inaequalis Spores of Plasmodiophora brassicae in the host cells

  6. SIGN of BACTERIA Bacterial wilt of tomato caused by Ralstonia solanacearum Showing wilting of foliage and stunting of plant

  7. Bacterial wilt of tomato caused by Ralstonia solanacearum showing wilting of foliage

  8. Bacterial wilt of tomato caused by Ralstonia solanacearum • Brown discoloration of stem tissues

  9. Bacterial wilt of tomato caused by Ralstonia solanacearum • Bacterial ooze from freshly-cut section of stem

  10. Bacterial wilt of tomato caused by Ralstonia solanacearum • Bacterial streaming in clear water from stem cross-section of plant

  11. Bacterial wilt of tomato caused by Ralstonia solanacearum Bacterial streaming in clear water from stem cross-section of plant

  12. Ralstonia solanacearum

  13. Potato Brown Rot • Gray brown discoloration of vascular tissues and bacterial ooze in potato tuber infected by Ralstonia solanacearum race 3 biovar 2

  14. Bacterial wilt on slicing cucumbers

  15. SIGN of VIRUSES • Tobacco Mosaic Virus (TMV) • non-uniform coloration, with intermingled normal, light green and yellowish patches, usually caused by a virus; often used interchangeably with mottle

  16. ▲ Electron micrograph of TMV: rod-shaped, with a length of 300 nm and a width of 18 nm ◄ Crystal composed of thousands of oriented virus particles, observed with a Freeze-Etch Replica in a TEM.Magnified 160,000X C=unstained crystal A= amorphous or X body

  17. ▲ SMV: filamentous flexuous particles about 750 nm in length Pinwheel inclusion bodies formed by Soybean Mosaic Virus in soybean leaves▼ HOME

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