Genetic diversity in maize landraces for resistance to Chilo partellus in Kenya

Abstract: 
Yield losses in maize associated with stem borer damage is estimated at 13% annually in Kenya. New sources of resistance to stem borers are needed to develop germplasm for the diverse maize growing ecologies. This study was conducted to establish new sources of resistance from CIMMYT landrace accessions to Chilo partellus. Landraces are expected to provide diverse sources of useful genes that may have been lost during breeding in elite germplasm. Landraces Guan 34, Guat 79, and Guat 1050 were the most resistant, exhibiting lowest tunnel length mean of 8.79 cm compared to the resistant hybrid checks mean of 15.4 cm.
Les pertes de rendement dans le maïs causées par des dégâts des insectes ravageurs des tiges sont estimées à 13% par an au Kenya. De nouvelles sources de résistance aux ravageurs des tiges sont nécessaires pour développer du matériel génétique pour les diverses écologies de croissance de maïs. Cette étude a été menée pour établir de nouvelles sources de résistance à partir des accessions de Landrace CIMMYT au Chilo partellus. Les landraces sont censées fournir diverses sources de gènes utiles qui peuvent avoir été perdus pendant la reproduction du matériel génétique d’élite. Les variétés locales Guan 34, Guat 79, et Guat 1050 ont été les plus résistantes, présentant la plus faible moyenne de longueur du tunnel de 8,79 cm par rapport à la moyenne des contrôles des hybrides résistants de 15,4 cm.
Language: 
Date of publication: 
2010
Country: 
Region Focus: 
East Africa
Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
Publisher: 
ISSN: 
E_ISSN: 
Edition: 
Extent: 
1003-1007
Notes: 

About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Plant Breeding"