Hort. Sci. (Prague), 2014, 41(2):95-99 | DOI: 10.17221/266/2013-HORTSCI

In vitro elimination of Black raspberry necrosis virus from black raspberry (Rubus occidentalis) - Short CommunicationShort Communication

E.J. Cheong, A.R. Jeon, J.W. Kang, R. Mock, G. Kinard, R. Li
National Germplasm Resources Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, USA

Black raspberry necrosis virus (BRNV) is one of the most important viral pathogens of Rubus spp. In this study, a procedure combining in vitro culture and heat therapy on axillary buds of Rubusoccidentalis was developed to eliminate BRNV from infected plants. Axillary buds were grown aseptically at 4-h alternating periods of 29°C and 38°C with 14-h day length for 1-5 weeks. Shoots induced after thermotherapy were tested for the viruses by RT-PCR. BRNV was not detected in any shoots indicating that BRNV was heat labile. BRNV-free shoots were rooted in vitro and acclimatized in greenhouse. Regenerated plants remained virus-free after 2-month acclimatization, 3-month dormancy and 5-month growth periods.

Keywords: BRNV; Rubus occidentalis; axillary bud culture; thermotherapy

Published: June 30, 2014  Show citation

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Cheong EJ, Jeon AR, Kang JW, Mock R, Kinard G, Li R. In vitro elimination of Black raspberry necrosis virus from black raspberry (Rubus occidentalis) - Short Communication. Hort. Sci. (Prague). 2014;41(2):95-99. doi: 10.17221/266/2013-HORTSCI.
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