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Plant Disease Research
Year : 2009, Volume : 24, Issue : 1
First page : ( 73) Last page : ( 73)
Print ISSN : 0970-4914. Online ISSN : 2249-8788.

Current status of viruses infecting apples in India

Thakur P.D., Handa Anil, Tomar Manica, Jarial Kumud

Plant virology laboratory Department of Mycology and Plant Pathology, D r. Y.S Parmar University of Horticulture and Forestry, Nauni, Solan, H.P., 173 230

National Symposium on “Plant Pathology in the Changing Global Scenario” held at National Bureau of Plant Genetic Resources, New Delhi on February 27–28, 2009

Online published on 25 November, 2011.

Abstract

Apple is one of the commercial fruit crops of the temperate zone of the country with a total production of 14,70,000 mt. Major apple growing states of the country are Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim and Arunachal Pradesh. In Himachal Pradesh, 1,86,903 ha area is under apple cultivation with an annual production of around 5, 40,356 mt. Number of factors viz. climatic factors, old plantation, poor canopy management etc. are responsible for low productivity of apples in India as compared to the developed countries. However, amongst all these factors virus infections play a vital role in affecting the quality and quantity of apples. Except H.P not much information is available on the status of virus infection in apples from other apple producing states of the country. Routine surveys conducted in different apple growing areas of H.P revealed that the apple plantation is marred by the virus infections with an incidence ranging between 5–90 per cent in different orchards. Serological and molecular detection based on ELISA and PCR studies conducted in H.P. revealed the association of four major viruses namely ACLSV trichovirus, ApMV ilarvirus, ASP foveavirus, and ASG capillovirus with apple trees. Mixed infections involving more than two viruses were of common occurrence in a large number of apple plants. Serological indexing has been done for the selection of virus free clones of important commercial cultivars of apple. Dr.Y.S Parmar university of Horticulture and forestry, Solan, (H.P). is engaged in the production and supply of virus indexed planting material of apple by establishing budwood bank of elite plantation stocks for use in raising disease free nursery plants.

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