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Host Range And Transmission Of Tobacco Streak Virus (TSV) Causing Cotton Mosaic Disease | 4529
ISSN: 2157-7625

Journal of Ecosystem & Ecography
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Host range and transmission of Tobacco Streak Virus (TSV) causing cotton mosaic disease

Biodiversity & Sustainable Energy Development-2012

Utpal Dey

Posters: J Ecosyst Ecogr

DOI: 10.4172/2157-7625.S1.009

Abstract
Cotton is one of the most important fibre crops playing a key role in economic and social status of the world. Cotton locally known as?white gold?is also a king of cash crops. Cotton belongs to genus Gossypium of the family Malvaceae and has several different species but Cotton varieties grown in India belongs to four distinct species viz. G. arborium, G. herbaceum, G. hirsutum and G. barbadence. While over twenty virus diseases of cotton have been described in the American phytopathological society is ?cotton disease compendium?only a few have actually been shown to be of virus etiology. The main ones so proven include several Gemini viruses and Tobacco streak virus viral diseases of cotton have historically been of only sporadic importance to global cotton production. Tobacco streak virus (TSV) causing cotton mosaic disease was found to be transmissible by mechanical means specially when extracts were made in neutral phosphate buffer 0.02M containing reducing agent like 2-Mercaptoethanol.The disease was found to be transmitted by Thrips palmi (cotton thrips) and Thrips tobacci (onion thrips). TSV was detected in sample showing mosaic symptoms.TSV was readily graft transmissible but not transmissible by mechanical means, no evidence of its transmission through seed or by thrips was obtained. About 19 plant species belonging to five different families viz.malvaceae, chenopodiaceae, compositeae, leguminoceae and solanaceae were tested for host range and virus isolate causing cotton mosaic disease
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