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QTL mapping for anthesis-silking interval and yield components under drought stress in maize

By: Li, X.H | 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): Li, M.S [coaut.] | Zhang, S.H [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 182-183.Subject(s): Crossbreeding | Drought stress AGROVOC | Genes | Grain yield | Heritability AGROVOC | Maize | Quantitative genetics AGROVOC | Plant breeding AGROVOCDDC classification: 631.53 Summary: Selection for grain yield under drought conditions has often been considered ineffident because of low heritability, especially as yield decreases. Selection for secondary traits correlated to grain yield and having relatively high heritabilities may increase selection effidency. Anthesis silking interval (ASI) is a precise secondary trait (Edmeades et al. 1999). With the development of molecular markers, it is possible to identify major quantitative trait loci (QTL) regulating specific drought responses, and thus provide an effident way to improve drought tolerance in maize germplasm (Veldboom et al.19%). In this study, the QTL lod conferring the expression of ASI and yield components were characterized, and the resulting information was adopted to improve grain yield under drought conditions.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 631.53 BOO (Browse shelf) 1 Available 2I632399
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Selection for grain yield under drought conditions has often been considered ineffident because of low heritability, especially as yield decreases. Selection for secondary traits correlated to grain yield and having relatively high heritabilities may increase selection effidency. Anthesis silking interval (ASI) is a precise secondary trait (Edmeades et al. 1999). With the development of molecular markers, it is possible to identify major quantitative trait loci (QTL) regulating specific drought responses, and thus provide an effident way to improve drought tolerance in maize germplasm (Veldboom et al.19%). In this study, the QTL lod conferring the expression of ASI and yield components were characterized, and the resulting information was adopted to improve grain yield under drought conditions.

English

0309|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection

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