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Use of combining ability of tropical inbread lines and single cross estimates as tools to identify superior parents for three-way cross maize hybrids

By: Córdova, H.S | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Castellanos, S [coaut.] | Cervantes, E [coaut.] | De Leon, C [coaut.] | Fuentes, M [coaut.] | Mejía, S [coaut.] | Narro, L.A [coaut.] | Sierra, M [coaut.] | Trifunovic, S [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 236-237.ISBN: 970-648-106-0.Subject(s): Crop husbandry | Crossbreeding | Developing Countries | Germplasm | Growth | Maize | Technology | Yields AGROVOC | Hybrids AGROVOCSummary: The selection of superior parents is one of the most important steps in a well-organized maize hybrid breeding program. This selection criteria will lead the way to achieving consistent progress in yield and agronomic traits. Most developing countries in Latin America and Africa sti11 use three-way or double cross hybrids. Therefore, it is very important to develop the proper germplasm adapted to maize growing conditions. A three-way cross hybrid should meet three important conditions: (1) yield potential and standability in farmers' fields, (2) good seed yield and standability of the single cross female in seed production fields, and (3) good plant height, pollen shedding, and standability of the male parent and ability to compete with the single cross female (Cordova and Trifunovic 2001). The use of combining ability estimates for selection of outstanding progenitors is a very common practice in any hybrid breeding program. Nevertheless, the general combining ability (GCA) estimates are very seldom used for identifying single crosses with potential for use in three-way cross hybrid combination. The objectives of this study were to estimate the GCA and CE effect, to identify superior single crosses and inbred line progenitors, and to evaluate the yield potential and agronomic responses of three-way cross hybrids.Collection: CIMMYT Staff Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-3860 (Browse shelf) 1 Available 632558
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The selection of superior parents is one of the most important steps in a well-organized maize hybrid breeding program. This selection criteria will lead the way to achieving consistent progress in yield and agronomic traits. Most developing countries in Latin America and Africa sti11 use three-way or double cross hybrids. Therefore, it is very important to develop the proper germplasm adapted to maize growing conditions. A three-way cross hybrid should meet three important conditions: (1) yield potential and standability in farmers' fields, (2) good seed yield and standability of the single cross female in seed production fields, and (3) good plant height, pollen shedding, and standability of the male parent and ability to compete with the single cross female (Cordova and Trifunovic 2001). The use of combining ability estimates for selection of outstanding progenitors is a very common practice in any hybrid breeding program. Nevertheless, the general combining ability (GCA) estimates are very seldom used for identifying single crosses with potential for use in three-way cross hybrid combination. The objectives of this study were to estimate the GCA and CE effect, to identify superior single crosses and inbred line progenitors, and to evaluate the yield potential and agronomic responses of three-way cross hybrids.

Global Maize Program

English

0311|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

INT2062

CIMMYT Staff Publications Collection

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