Normal view MARC view ISBD view

Occurrence and significance of spot blotch in Bangladesh

By: Alam, K.B | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Banu, S.P [coaut.] | Duveiller, E.|Dubin, H.J.|Reeves, J.|McNab, A [eds.] | Shaheed, M.A [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT|UCL|BADC : 1998ISBN: 970-648-001-3.Subject(s): Bangladesh | Blotches | Cropping systems | Pathogens | Plant diseases | Spots | CIMMYT | Triticum aestivum AGROVOCDDC classification: 633.1194 Summary: Spot blotch, caused by Bipolaris sorokiniana, is a destructive disease of wheat in the rice- based cropping system of Bangladesh. The disease has the potential to be epiphytotic on the wheat variety Kanchan, which covers 85% of the total wheat area in the country. The disease appears at the seedling stage and increases in severity with plant age. Incidence of the pathogen in grain is common. At the present time, almost all released varieties in Bangladesh show varying degrees of spot blotch susceptibility but no germplasm has been found to be highly resistant. Yield losses in varieties Akbar, Agrahni, Kanchan, Sawgat, and Sonalika were 16.7%, 9.7%,19.0%, 23.0%, and 23.6%, respectively. In the 1991/92-1993/94 wheat seasons, the average wheat yield loss due to spot blotch was estimated at 14.9%. Variability among R. sorokiniana isolates collected from different locations in Bangladesh has been studied.Collection: CIMMYT Publications Collection
Tags from this library: No tags from this library for this title. Log in to add tags.
    average rating: 0.0 (0 votes)
Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.1194 DUV (Browse shelf) 1 Available I624337
Total holds: 0

Spot blotch, caused by Bipolaris sorokiniana, is a destructive disease of wheat in the rice- based cropping system of Bangladesh. The disease has the potential to be epiphytotic on the wheat variety Kanchan, which covers 85% of the total wheat area in the country. The disease appears at the seedling stage and increases in severity with plant age. Incidence of the pathogen in grain is common. At the present time, almost all released varieties in Bangladesh show varying degrees of spot blotch susceptibility but no germplasm has been found to be highly resistant. Yield losses in varieties Akbar, Agrahni, Kanchan, Sawgat, and Sonalika were 16.7%, 9.7%,19.0%, 23.0%, and 23.6%, respectively. In the 1991/92-1993/94 wheat seasons, the average wheat yield loss due to spot blotch was estimated at 14.9%. Variability among R. sorokiniana isolates collected from different locations in Bangladesh has been studied.

English

9806|AGRIS 9802

Jose Juan Caballero

CIMMYT Publications Collection

There are no comments for this item.

Log in to your account to post a comment.
baner

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Monday –Friday 9:00 am. 17:00 pm. If you have any question, please contact us at CIMMYT-Knowledge-Center@cgiar.org

Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org