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multilingual compendium of plant diseases

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258<br />

Solanum tuberosum (Gramineac) + Pythium vexans De Bary =<br />

ENGLISH Water Rot and Leak <strong>of</strong> Potatoes, Seedling Disease <strong>of</strong> Gramineae<br />

FRENCH<br />

SPANISH Pucrici6n de agua, goteo<br />

PORTUGUESE<br />

ITALIAN<br />

RUSSIAN<br />

SCANDINAVIAN<br />

GERMAN<br />

DUTCH<br />

HUNGARIAN<br />

BULGARIAN ceneHe<br />

TURKISH<br />

ARABIC<br />

PERSIAN<br />

BURMESE<br />

THAI<br />

NEPALI<br />

HINDI<br />

VIETNAMESE<br />

CHINESE<br />

JAPANESE<br />

The most characteristic symptom is the extremely watery nature <strong>of</strong> the affected tissues. When<br />

pressure is applied, a yellowish to brown liquid is readily given <strong>of</strong>f. Another characteristic<br />

is the granular nature <strong>of</strong> diseased tissues. Externally, the affected tissues appear turgid and<br />

show a discoloration ranging from metallic gray in red varieties to brown shades in white and<br />

dark-skinned varieties. Internally, the creamy color tissue, upon cutting, turns tan or slightly<br />

reddish, brown and finally black.<br />

Le symptoma le plus characteristic es le essentia grandemente aquose del texito afflicte. Sub<br />

presion, un liquor jalnette o brun se exsuda facilemente. Anque symptomatic es le character<br />

granular del texitos morbide. Externemente, le texitos afflicte es turgide e monstra discoloration<br />

que se varia ab gris metallic in varietates rubie usque a tintas brun in varietates que<br />

ha un pelle blanc o obseur. Internemente, le texito de color de crema deveni, post section,<br />

bronzate, brun, e, al fin, nigre.<br />

Le sympt6me le plus caract4ristique est l'aspect tras d~lav6 des tissus atteints. Quand on<br />

applique une pression, un liquide jaune a brun exsude facilement. Une autre caractdristique<br />

est la texture granuleuse, des tissus malades. A l'extdrieur, les tissus affectds paraissent turgescents,<br />

et leur couleurva dii gris m4tallique chez les vari 4 t6s rouges, aux teintes de brun<br />

chez les varietes blanches et celles dont la. peau est foncee. Sectionnes, les tubercules laissent<br />

voir les tissus intdrieurs cr~meux, qui bient6t deviennent couleur chamois ou lgrement<br />

rouge~tres, puis bruns et finalement noirs.<br />

El sintoma mas caracterfstico es la extrema naturaleza acuosa de los tejidos afectados. Cuando<br />

se hace presi6n, sale ftcilmente unliquido amarilloso o caf6. Otra caracteritica es la naturaleza<br />

granular de los tejidos enfermos. Externamente, los tejidos afectajos parecen tidrgidos<br />

y muestran una decoloraci6n que varfa de gris metilico en las variedades rojas a tonos caf4<br />

en las variedades blancas y de ciscara obscura. Internamente, el tejido de color cremoso,<br />

al cortarlo se vuelve caf6 bien claro o algo rojizo, caf6 y finalmente negro.<br />

DISTRIBUTION: Af., A., Aust., Eur., N.A.

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