Transmission, Detection and Mapping Resistant Genes for Tomato Spotted Wilt Virus in Tomato
P.J. Nivethaa*
Dept. of Vegetable Science, College of Horticulture (University of Agricultural and Horticultural Sciences), Mudigere, Karnataka (577 132), India
G. Sidhdharth
Dept. of Vegetable Science, Horticultural College and Research Institute (Tamil Nadu Agricultural University), Periyakulam, Tamil Nadu (625 604), India
DOI: NIL
Keywords: Resistance, Thrips, Tomato, Virus
Abstract
Tomato spotted wilt virus (TSWV) causes serious diseases of many economically important plants including dicots and monocots. TSWV is the only member of an RNA-containing virus group that has membrane-bound spherical particles 70-90 mm in diameter. TSWV is one of the major diseases in tomato transmitted by thrips and became the main threat in tomato cultivation. The life cycle of thrips takes about 20-30 days from egg to adult, again depending on the temperature. Symptoms of tomato spotted wilt differ among hosts and can be variable in a single host species. Stunting is a common symptom of TSWV infection, and is generally more severe when young plants are infected. Virus can be detected by many methods such as ELISA, polymerase chain reaction and recombinant polymerase amplification. Resistance is controlled by a single dominant gene from the resistant sources such as Solanum chilense and Solanum peruvianum.
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Reference
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