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Maize dwarf mosaic virus
Maize Dwarf Mosaic Virus (MDMV) is a plant pathogenic virus of the family Potyviridae.
Depending on the corn plant’s growth stage, the virus can have severe implications to the corn plant’s development which can also result in economic consequences to the producer of the crop.
== Importance ==
Maize (''Zea mays'') is a major cereal crop; it is third behind rice and wheat in production. An average of 380 million tons are produced annually by 53 countries. Maize is the most widely grown crop ranging from tropical areas with altitudes over 3000 m to temperate areas extending as far north as the 65th latitude. The importance of maize dwarf mosaic virus (MDMV) is largely economical. MDMV is the most serious virus of sweet corn.
If corn plants are infected with MDMV, ear formation and development are slowed leading to grain yield loss. The damage from MDMV can cause the halting of ear formation and development, ultimately leading to the production of barren ears.〔 There can be losses of up to 42% on early planted corn. MDMV can cause 75% or more loss on late plated inbred and hybrid varieties.〔 A susceptible maize line was transformed by ''Agrobacterium tumefaciens'' to improve resistance to maize dwarf mosaic virus. The genus ''potyvirus'' has a subgroup with sugar cane mosaic virus (SCMV) and Johnson grass mosaic virus (JGMV).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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