SERIOUS CROWN ROT OF TOMATO SEEDLINGS: ETIOLOGIC SURVEYINGS During a three-year period (2003-05) of surveys in horticultural areas of Central and Southern Italy uncommon cases of tomato plants decline were observed after seedlings transplanting. Diseased plants often showed severe symptoms of collar necrosis and damping-off. Roots and collar of affected plants were pale brown, soft, water-soaked and thinner than non-affected ones. Stunting of plants due to root and/or collar rot was often observed. Basing on either field symptoms and laboratory investigations the pathogen responsible for such disease was Rhizoctonia solani Kühn, anamorph of Thanatephorus cucumeris (Frank) Donk.

Nel corso di periodici sopralluoghi effettuati nel triennio 2003-05 in aree orticole dell’Italia centro-meridionale è stata riscontrata un’insolita ed elevata incidenza di casi di deperimento di piante di pomodoro in campo. Le piante interessate dalle alterazioni evidenziavano lesioni necrotiche e marcata strozzatura della zona del colletto con conseguente avvizzimento. Sulla base della sintomatologia e di specifiche indagini di laboratorio l’agente eziologico è risultato essere Rhizoctonia solani Kühn, anamorfo di Thanatephorus cucumeris (Frank) Donk.

Gravi alterazioni al colletto di giovani piante di pomodoro: indagini eziologiche

DE CURTIS, Filippo
;
LIMA, Giuseppe
2007-01-01

Abstract

SERIOUS CROWN ROT OF TOMATO SEEDLINGS: ETIOLOGIC SURVEYINGS During a three-year period (2003-05) of surveys in horticultural areas of Central and Southern Italy uncommon cases of tomato plants decline were observed after seedlings transplanting. Diseased plants often showed severe symptoms of collar necrosis and damping-off. Roots and collar of affected plants were pale brown, soft, water-soaked and thinner than non-affected ones. Stunting of plants due to root and/or collar rot was often observed. Basing on either field symptoms and laboratory investigations the pathogen responsible for such disease was Rhizoctonia solani Kühn, anamorph of Thanatephorus cucumeris (Frank) Donk.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11695/7986
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