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TIZON FOLIAR [2 records]

Record 1 2011-02-11

English

Subject field(s)
  • Plant Diseases
  • Grain Growing
OBS

blight affecting corn and caused by fungi (either Helminthosporium maydis or Cochliobolus heterostrophus).

OBS

"Maydis leaf blight" was extracted from the Pascal data base.

Key term(s)
  • southern leaf blight

French

Domaine(s)
  • Maladies des plantes
  • Culture des céréales
OBS

Helminthosporiose causée par le champignon Helminthosporium maydis ou Cochliobolus heterostrophus.

Key term(s)
  • helminthosporiose du Sud

Spanish

Campo(s) temático(s)
  • Enfermedades de las plantas
  • Cultivo de cereales
CONT

El tizón del Sur es causado por el hongo Bipolaris maydis (=Helminthosporium maydis); afecta al maíz, al teosinte y al sorgo. Prevalece en ambientes cálidos y húmedos y afecta los cultivos de maíz en la temporada de verano, tanto en las tierras bajas tropicales como en las tierras altas; también afecta al maíz al final de la temporada de invierno cuando la temperatura comienza a aumentar. El tizón del Norte y este tizón pueden encontrarse afectando el cultivo de maíz en diferentes épocas de la misma estación.

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Record 2 2007-09-24

English

Subject field(s)
  • Plant Diseases
CONT

In 1970, a corn blight devastated more than 15 percent of the North American corn crop. The corn was particularly susceptible to the blight because over 70% of the corn being grown in the US came from the same parent lines.

CONT

[...] The southern corn blight caused by Helminthosporium maydis, Race T, which severely attacked all maize hybrids with cytoplasmic male-sterile T cytoplasm, demonstrated the vulnerability of a hybrid seed production industry based on a single source of male-sterile cytoplasm.

French

Domaine(s)
  • Maladies des plantes
CONT

[...] En 1970, une épidémie d'helminthosporiose du maïs (Helminthosporium maydis Nisik. and Miyake) sévit dans toute la Corn Belt américaine. Au même moment, au moins 80 % du maïs cultivé aux États-Unis était sensible à l'helminthosporiose parce que ce maïs contenait un cytoplasme mâle-stérile du « type Texas » [...]

Spanish

Campo(s) temático(s)
  • Enfermedades de las plantas
CONT

Helmintosporiosis del maíz. Presencia de pequeñas manchas pardo negruzcas sobre las hojas, con forma oval o alargada y con un halo clorótico externo.El causante es Helminthosporium maydis.

CONT

Helminthosporium maydis produce una enfermedad foliar del maíz conocida como helmintosporiosis o tizón foliar. El hongo tiene una raza T [...] Dicha raza solo ataca a las variedades de maíz que tienen citoplasma androestéril, la resistencia al hongo y a la toxina se hereda por vía materna.

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