The occurrence of root rot and crown rot of rice in Gilan and Zanjan provinces, Iran.
Commun Agric Appl Biol Sci
; 69(4): 525-9, 2004.
Article
en En
| MEDLINE
| ID: mdl-15756834
Root rot and crown rot of rice is one of the important fungal diseases of rice in Gilan and Zanjan provinces, Iran. During 1999--2002, samples of plant and soil around the roots of infected rice plants were collected and used to identify the causal agent. Root and crown parts were surface sterilized with sodium hypochlorite and then cultured on PDA (potato dextrose agar), PPA (pepton pentacholoritobenzene agar) and CLA (carnation leaf agar) media. Soil samples prepared in water agar were used to isolate the pathogen. The causal agent was identified as Fusarium moniliforme. Colonies were initially white but turned violet to grey late. Microconidia were arranged in chain and macroconidia were cylindrical and long with 3-5 septa. The disease was severe in Zanjan province particularly along Ghezel Ozan river where the infection ranged from 70-80%. Root and crown rot was more prevalent in areas where Champa and Gerdeh were being cultivated continuously. On the other hand, Sadri cultivars had relatively less infection. Persistent cultivation of rice and seed sowing method intensified disease development and caused significant economic losses.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Enfermedades de las Plantas
/
Raíces de Plantas
/
Componentes Aéreos de las Plantas
/
Fusarium
Tipo de estudio:
Prognostic_studies
País/Región como asunto:
Asia
Idioma:
En
Revista:
Commun Agric Appl Biol Sci
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2004
Tipo del documento:
Article
País de afiliación:
Irán
Pais de publicación:
Bélgica