Empfohlen
Weitere ähnliche Inhalte
Was ist angesagt?
Was ist angesagt? (20)
Andere mochten auch
Andere mochten auch (20)
Ähnlich wie Role of whitefly in plant virus transmission by p.manikandan
Ähnlich wie Role of whitefly in plant virus transmission by p.manikandan (20)
Kürzlich hochgeladen
Kürzlich hochgeladen (20)
Role of whitefly in plant virus transmission by p.manikandan
- 2. ROLE OF WHITEFLY IN PLANT VIRUS TRANSMISSION PRESENTED BY P.MANIKANDAN M.Sc(Agri)Entomology Chaiman: Dr.R.Kannan Assistant Professor in Entomology Annamalai university
- 3. Index 1.Taxonomy 2. Importance 3. Mechanism of transmission 4. Plant damage 5. Viruses transmitted
- 4. Taxonomy • Kingdom:Animalia Phylum:Arthropoda • Class:Insecta Order:Hemiptera • Suborder:Sternorrhyncha • Superfamily:Aleyrodoidea Family: Aleyrodidae • Species: 1550 sp. worldwide, 3 are important -114 viruses are transmitted by these 3 spp. • Bemisia tabaci -111 viruses • Trialeurodes vaporariorum -3 viruses • Trialeurodes abutilonea -3 viruses
- 5. VIRUS-VECTOR RELATIONSHIP • Mostly circulative • Semi persistent to persistent • Females efficient in transmission • LP-few hrs. • Phloem
- 6. ECONOMIC IMPORTANCE OF WHITEFLIES •High economic losses •Monophagus to Polyphagus •All stage of host •Fecundity: ~50 to 300+ offspring •Very low spray threshold •Insecticide resistance •Plant virus transmission
- 7. Whitefly species identification species egg nymphs adult T. vaporariorum B. tabaci
- 8. 8 Direct damage Type of damage Indirect damage Virus transmission
- 9. Mechanism of transmission 9 Contaminated diet transmission. Diet contaminated by the saliva of viruliferous insects. Sexual transmission Male to female or vice versa during copulation.
- 10. Cont…
- 11. Whitefly transmitting viruses Geminivirus (Begamovirus) Crinivirus Closterovirus
- 13. Tomato yellow leaf curl virus (TYLCV)
- 16. Cotton leaf crumple virus
- 17. Cotton leaf curl virus
- 18. Chilly leaf curl virus
- 19. Mung bean yellow mosaic virus
- 20. Okra enation leaf curl virus
- 21. Pepper golden mosaic virus
- 22. Potato yellow mosaic virus
- 23. Sweet potato leaf curl virus
- 24. Squash leaf curl virus
- 25. Tomato yellow leaf curl virus
- 26. Cabbage leaf curl virus
- 27. Bhendi yellow vein mosaic virus
- 28. African cassava mosaic virus
- 29. Bean calico mosaic virus
- 30. Bean golden yellow mosaic virus
- 31. Crinivirus
- 32. Blackberry yellow vein-associated virus
- 34. Cucurbit yellow stunting disorder virus
- 36. Lettuce infectious yellows virus
- 37. Sweet potato chlorotic stunt virus
- 39. Tomato infectious chlorosis virus
- 40. Closterovirus
- 42. Grapevine corky bark-associated virus
- 43. Little cherry virus 1
- 45. Sugarcane mild mosaic virus
- 46. Reference • George N.agrios(2006)academic press,plant pathology p.p: 774-809 • Roger hull (2004) academic press, Mathews’Plant Virology p.p: 27-44 • http:/Whitefly,Wikipedia,the free encyclopedia.html • Diseases of vegetable crops in Australia (eds Persley, Cooke & House 2010), available from CSIRO Publishing at www.publish.csiro.au
Hinweis der Redaktion
- Whiteflies and whitefly-transmitted viruses are some of the major constraints on European tomato production. Tomato crops are particularly susceptible to viruses causing Tomato yellow leaf curl disease (TYLCD).