Normal view MARC view ISBD view

Heterosis and combining ability for yield and related traits in maize

By: Abdurehman, J | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) | Arnel R. Hallauer International Symposium on Plant Breeding Mexico, DF (Mexico) 17-22 Aug 2003.
Contributor(s): Gupta, V.P [coaut.] | Zelleke, H [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 256-257.ISBN: 970-648-106-0.Subject(s): Crossbreeding | Germplasm | Grain yield | Inbred lines | Maize | Pollination | Zea mays AGROVOC | Genotypes AGROVOC | Hybrids AGROVOC | Plant breeding AGROVOCSummary: Amongst cereals in Ethiopia, maize (Zea mays L.) ranks first in terms of total production and grain yield (CSA l997). Despite its importance, the national average for maize yield was low (only l.7 t/ha). This was attributed to several production constraints, including the lack of improved maize varieties (Abera 1982). After the release of improved open pollinating and hybrid varieties, the national average yield increased to 1.93 t/ha. Due to an increasing interest in hybrid maize production, the national maize research program began various activities related to hybrid development, including the determination of heterotic patterns and combining ability amongst different maize germplasms, and the identification of the most desirable crosses for exploiting heterosis. Heterosis receives considerable attention because of its marked effects on grain yield improvement. The amount of heterosis depends largely upon the genetic divergence of the parental materials (Hallauer and Miranda 1988).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-3866 (Browse shelf) 1 Available 632564
Total holds: 0

Amongst cereals in Ethiopia, maize (Zea mays L.) ranks first in terms of total production and grain yield (CSA l997). Despite its importance, the national average for maize yield was low (only l.7 t/ha). This was attributed to several production constraints, including the lack of improved maize varieties (Abera 1982). After the release of improved open pollinating and hybrid varieties, the national average yield increased to 1.93 t/ha. Due to an increasing interest in hybrid maize production, the national maize research program began various activities related to hybrid development, including the determination of heterotic patterns and combining ability amongst different maize germplasms, and the identification of the most desirable crosses for exploiting heterosis. Heterosis receives considerable attention because of its marked effects on grain yield improvement. The amount of heterosis depends largely upon the genetic divergence of the parental materials (Hallauer and Miranda 1988).

English

0311|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.
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