Normal view MARC view ISBD view

Disease progress of Peronosclerospora sorghi on some Ugandan maize genotypes

By: Bigirwa, G | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Adipala, E [coaut.] | Cardwell, K.F [coaut.] | Esele, P [coaut.] | Okanya, S [coaut.] | Ransom, J.K.|Palmer, A.F.E.|Zambezi, B.T.|Mduruma, Z.O.|Waddington, S.R.|Pixley, K.V.|Jewell, D.C [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Addis Ababa (Ethiopia) CIMMYT : 1997ISBN: 92-9146-025-7.Subject(s): Disease resistance | Peronosclerospora | Plant diseases | Uganda | CIMMYT | Zea mays AGROVOC | Genotypes AGROVOCDDC classification: 633.15 Summary: The type and level of disease reaction of Ugandan maize genotypes to Peronosclerospora sorghi was characterized using several variables during the second season of 1994 at two locations, Nazaretti in Mpigi district and Ikulwe in Iganga district. Maize genotypes differed significantly (p<0.05) in susceptibility as determined by the rate of disease increase (r), area under disease progress curve, and disease incidence. The Gompetz model was the most appropriate to describe the epidemics. Analysis of the parameters of the fitted models and other variables indicated that hybrid NZ1, Farida, and Pool 16 were the most susceptible while Longe 1 and 102 were moderately resistant. At Nazaretti there were significant differences in the epidemic onset (y0*) indicated by the intercept of the regression equation for logit in relation to time of planting. At Ikulwe there were no significant differences.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 633.15 EAS No. 5 (Browse shelf) 1 Available 1X624172
Total holds: 0

The type and level of disease reaction of Ugandan maize genotypes to Peronosclerospora sorghi was characterized using several variables during the second season of 1994 at two locations, Nazaretti in Mpigi district and Ikulwe in Iganga district. Maize genotypes differed significantly (p<0.05) in susceptibility as determined by the rate of disease increase (r), area under disease progress curve, and disease incidence. The Gompetz model was the most appropriate to describe the epidemics. Analysis of the parameters of the fitted models and other variables indicated that hybrid NZ1, Farida, and Pool 16 were the most susceptible while Longe 1 and 102 were moderately resistant. At Nazaretti there were significant differences in the epidemic onset (y0*) indicated by the intercept of the regression equation for logit in relation to time of planting. At Ikulwe there were no significant differences.

English

9801|AGRIS 9702

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.
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.
Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org