Author
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Martin, Robert |
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Submitted to: Compendium of Blackberry and Raspberry Diseases and Insects
Publication Type: Book / Chapter Publication Acceptance Date: 2/22/2010 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: Tomato ringspot virus (ToRSV) is the most widespread and important of the nematode-transmitted viruses affecting cultivated Rubus in North and South America but is not known to occur outside of the Western Hemisphere. A recent report from Turkey on ToRSV in blackberry in borders of stone fruit orchards suggests that it could have been an introduced virus. Among Rubus cultivars, ToRSV causes the most serious disease in red raspberry and has been reported in some cultivated and wild blackberries and raspberry-blackberry hybrids, but not in black raspberry. The reports on blackberry from North America were based on symptoms after mechanical transmission, and have not been confirmed. However, in Chile ToRSV was detected in about 70% of blackberry and red raspberry plants with virus-like symptoms. Some blackberry cultivars appear to be immune to ToRSV, since they have not become infected over a period of 10 years when planted into a field with high disease pressure where the soil was not pretreated. In the same field, there was a high incidence of ToRSV in several weed species during the same time period. In red raspberry, damage can range from none (in cultivars where ToRSV is latent) to the production of crumbly fruit to the death of plants severely weakened by the virus. ToRSV has large natural and experimental host ranges in herbaceous and woody plants in more than 35 plant families. Hosts include such fruit crops as strawberry, apple, and peach, in the Rosaceae; blueberry, in the Ericaceae; and many common weeds, such as dandelion and chickweed. |
