Grapevine rupestris stem pitting hastalığı gövde belirtileri

1. Grapevine corky bark hastalığının LN 33 indikatör bitkisindeki yaprak belirtileri (Grapevine virus B)

2. Grapevine rupestris stem pitting hastalığı gövde belirtileri

3. Rugose wood complex (Closterovirus GVA)

4. Rugose wood complex (Closterovirus GVA)

5. Rugose wood complex (Closterovirus GVA)

6. Rugose wood complex (Closterovirus GVA)

7. Rugose wood complex (Closterovirus GVA)

8. Grapevine Fanleaf Virus Fanleaf degeneration disease is thought to be the most serious grapevine virus disease. The severity of symptoms varies by cultivar. Symptoms: Infected leaves are often malformed with abnormally gathered primary veins, giving the leaf the appearance of an open fan. Other symptoms may include a yellow mosaic pattern on leaves or bright yellow bands along major veins. Fan-shaped leaves may or may not be present with mosaic or veinbanding symptoms. Affected vines tend to be smaller than healthy vines. Sensitive varieties show progressive decline, low yields (up to 80% losses) and low fruit quality. The productive life of the vineyard is shortened and winter hardiness is decreased. Transmission: Fanleaf virus is transmitted by the nematodes Xiphinema index and X. italiae, which have never been found in Canada. There are no natural weed hosts. Long distance spread occurs primarily by movement of propagation material from infected plants

9. Yapraklarda Grapevine fanleaf virusünün sarı mozayik belirtileri Grapevine fanleaf virusünün parlak sarı damar bantlaşma belirtileri

10. Grapevine fanleaf virus (GFLV)

11. Grapevine fanleaf virus (GFLV)

12. Grapevine fanleaf virus (GFLV)

13. Grapevine fanleaf virus (GFLV)

14. Genç sürgündeki belirti ( Sağ resimde solda sağlıkı, sağda hasta sürgün)

15. Test Bitkilerinde Grapevine fanleaf virus (GFLV) belirtileri

16. Grapevine fanleaf virus (GFLV) partikülleri

17. Grapevine Leafroll-Associated Viruses Grapevine leafroll is probably the most wide-spread virus disease of grapevines world-wide. There are currently 9 different viruses associated with leafroll, but Grapevine leafroll-associated viruses 1 and 3 are most commonly found. In the national grapevine survey conducted in 1994-1995, GLRaV-1 was present in 1.0% of samples tested, whereas GLRaV-3 was present in 10.5% of samples tested nationally. Since then Grapevine leafroll-associated viruses 2, 4 and 5 have been detected in imported grapevines. Transmission: Long distance spread occurs primarily by movement of propagation material from infected plants. Several mealybug and soft scale insect species have been shown to transmit leafroll associated viruses under experimental conditions. Rapid leafroll spread has been reported in European vineyards having significant insect vector populations. In California, a very low rate of natural spread within vineyards has been observed. The common grape mealybug (Pseudococcus maritimus) which occurs in the Okanagan is a vector of GLRaV-3.

18. Grapevine Leafroll-Associated Viruses

19. Grapevine Leafroll-Associated Viruses

20. GLRaV–3

21. Grapevine Leafroll-Associated Viruses

22. Arabis Mosaic Virus Symptoms: The most common symptoms include leaf mottling and flecking, stunting and leaf deformation including enations. Many infections are latent and plants do not show symptoms. Symptoms can vary greatly by variety, rootstock and environment conditions. Yield losses of up to 50% may occur through reduced growth, dieback and severe dropping of fruit. Transmission: Long distance spread occurs primarily by movement of propagation material from infected plants. Arabis Mosaic Virus is transmitted by the nematode Xiphinema diversicaudatum, which has been found in scattered locations in Canada. This virus can also infect many other herbaceous and woody hosts such as raspberry, strawberry, rhubarb, cherry, peach, and plums.

23. Arabis Mosaic Virus Grapevines with yellow leaf mottle due to Arabis mosaic nepovirus, cv. Tamiioasca romineasca.

24. Grapevine (A) tested postive for ToRSV using RT-PCR probes and grapevine (B) tested negative. Both plants are Vidal and were grown in a greenhouse.

25. Tomato Ringspot Virus

26. Tomato Ringspot Virus (ToRSV)

27. Grapevine Fanleaf virus (GFLV) Disease Fanleaf is caused by a virus that also causes yellow mosaic and veinbanding. All three are transmitted by the nematode Xiphinema index.

28. Grapevine Fanleaf virus (GFLV)

29. Grapevine Leafroll Associated viruses (GLRaV1-8) Grapevine leafroll is widely regarded as one of the most devastating viral diseases of grapevine in South Africa. Damage directly attributed to the disease is nearly impossible to determine, but probably runs into millions of rand annually.

30. Grapevine leafroll-associated closteroviruses (GLRaV) I, II, III, IV and V

31. Grapevine leafroll-associated closteroviruses (GLRaV) I, II, III, IV and V

32. Grapevine leafroll-associated closteroviruses (GLRaV) I, II, III, IV and V

33. Grapevine Leafroll Associated viruses (GLRaV1-8)

34. Grapevine Leafroll Associated viruses (GLRaV1-8)

35. Grapevine chrome mosaic virus

36. Grapevine decline- American nepoviruse

37. Grapevine decline- American nepoviruse

38. Grapevine decline- American nepoviruse

39. Grapevine degeneration - European nepoviruses

40. Grapevine degeneration - European nepoviruses

41. Grapevine degeneration - European nepoviruses

42. Grapevine degeneration - European nepoviruses

43. Grapevine fleck virus (GFkV)

44. Grapevine line pattern virus (GLPV)

45. Grapevine line pattern virus (GLPV),

46. Declining Baco Noir vine Vine decline may be caused by insects, drought stress, overcropping, nutrient deficiencies, winter injury, herbicide damage, air pollutants, and viral, bacterial, and fungal diseases. These factors may all contribute to vine decline.

47. "J-rooted" Vidal vine Chardonnay clusters from healthy vs. declining vines

48. Alfalfa Mosaic Virus

49. ÇİNKO EKSİKLİĞİ

50. Alfalfa Mosaic Virus