Normal view MARC view ISBD view

Usefulness of stress tolerant open pollinated maize varieties in the development of double top cross hybrids adapted to the medium altitude of Eastern Africa

By: Kirubi, D.T | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) | Arnel R. Hallauer International Symposium on Plant Breeding Mexico, D.F. (Mexico) 17-22 Aug 2003.
Contributor(s): Diallo, A.O [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 44-45.ISBN: 970-648-106-0.Subject(s): Africa | Cross pollination | Farm buildings | Germplasm | Maize | Varieties | Hybrids AGROVOC | Plant breeding AGROVOCSummary: CIMMYT maize breeding programs in Nairobi (Kenya) and Harare (Zimbabwe) have developed a wide range of drought and low nitrogen tolerant open pollinated (OPV) germplasm that could be deployed for use in the medium altitude ecologies of eastern Africa. Unfortunately, their combining abilities with adapted elite CIMMYT germplasm known in the region has not been established, hence, reducing their use by national agricultural research system (NARS) breeders. Production of top cross and double top cross hybrids is cheaper than that of single and double cross hybrids. Many farmers in the region recycle their seeds. Therefore, use of double top crosses that are less sensitive to inbreeding depression could be one way of enhancing yield stability. The objectives of this study were to identify high-yielding and disease tolerant double top cross hybrids, and identify the best OPV that could be used as a' non inbred parent in the formation of top and double top cross hybrids for the region.Collection: CIMMYT Staff 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 Staff Publications Collection CIS-3829 (Browse shelf) 1 Available 632521
Total holds: 0

CIMMYT maize breeding programs in Nairobi (Kenya) and Harare (Zimbabwe) have developed a wide range of drought and low nitrogen tolerant open pollinated (OPV) germplasm that could be deployed for use in the medium altitude ecologies of eastern Africa. Unfortunately, their combining abilities with adapted elite CIMMYT germplasm known in the region has not been established, hence, reducing their use by national agricultural research system (NARS) breeders. Production of top cross and double top cross hybrids is cheaper than that of single and double cross hybrids. Many farmers in the region recycle their seeds. Therefore, use of double top crosses that are less sensitive to inbreeding depression could be one way of enhancing yield stability. The objectives of this study were to identify high-yielding and disease tolerant double top cross hybrids, and identify the best OPV that could be used as a' non inbred parent in the formation of top and double top cross hybrids for the region.

English

0309|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Staff 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