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Grains from stress-adaptive changes with selection for mid-season drought tolerance in tropical maize (zea mays L.)

By: Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) | Zaidi, P.H.
Contributor(s): Sanchez, C [coaut.] | Srinivasan, G [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 80-81.ISBN: 970-648-106-0.Subject(s): Crossbreeding | Drought resistance | Fertility | Maize | Yields AGROVOC | Genotypes AGROVOC | Hybrids AGROVOCSummary: Drought and low fertility, particularly low nitrogen (N), are the major abiotic constraints for maize production in much of the tropics. Most modern high yielding cultivars are developed under optimal environments and often perform poorly in marginal environments. Spillover effect with selection for high yield potential under optimal input conditions is realized only under mild stress (Blum 1996). Yield stability is as important as high yield, particularly under unfavorable/marginal environments. Therefore, for improved stability in such areas it is desirable to select for improved tolerance in maize to a set of abiotic constraints in a target environment. We attempted to assess the constitutive changes and spillover with selection and improvement for mid-season drought tolerance to accomplish our major goal of yield stability under low input and stress conditions, and improved yields under unstressed conditions.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-3836 (Browse shelf) 1 Available 632529
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Drought and low fertility, particularly low nitrogen (N), are the major abiotic constraints for maize production in much of the tropics. Most modern high yielding cultivars are developed under optimal environments and often perform poorly in marginal environments. Spillover effect with selection for high yield potential under optimal input conditions is realized only under mild stress (Blum 1996). Yield stability is as important as high yield, particularly under unfavorable/marginal environments. Therefore, for improved stability in such areas it is desirable to select for improved tolerance in maize to a set of abiotic constraints in a target environment. We attempted to assess the constitutive changes and spillover with selection and improvement for mid-season drought tolerance to accomplish our major goal of yield stability under low input and stress conditions, and improved yields under unstressed conditions.

Global Maize Program

English

0311|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

INT2823

CIMMYT Staff Publications Collection

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