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Efecto del deficit hidrico en la longitud y diametro de los entrenudos del tallo de cuatro cultivares de maiz

By: Espinoza Paz, N | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Edmeades, G.O.|Banziger, M.|Mickelson, H.R.|Pena-Valdivia, C.B [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 1997ISBN: 968-6923-93-4.Subject(s): Drought stress AGROVOC | Nodes | Plant anatomy | Plant developmental stages | Resistance to injurious factors | Stems | Water deprivation | CIMMYT | Zea mays AGROVOCDDC classification: 633.153 Summary: This study measured the effect of drought on the length and diameter of the stalk internodes of the maize varieties Cafime, Compuesto Temporal, Criollo Cajete, and Michoacan 21 composite 1-104 under normal irrigation, irrigation-drought (intermediate drought stress), and residual moisture or "cajete" (severe drought stress). Drought reduced the length and diameter of the internodes below the ears on the stalks of the four cultivars, a reduction that varied depending on the severity of the drought stress. The cultivars Criollo Cajete and Compuesto Temporal showed slight increases in the length and diameter of the internodes located above the ears. Under these circumstances, the greater length and diameter of internodes represents a moisture and assimilate sink for use in grain-filling, under reduced photosynthesis caused by drought. In addition, Criollo Cajete and Compuesto Temporal showed good grain yield under drought, making them likely candidates for use in a maize improvement program for the Oaxacan Mixteca region of Mexico.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.153 EDM (Browse shelf) 1 Available 1P624179
Total holds: 0

This study measured the effect of drought on the length and diameter of the stalk internodes of the maize varieties Cafime, Compuesto Temporal, Criollo Cajete, and Michoacan 21 composite 1-104 under normal irrigation, irrigation-drought (intermediate drought stress), and residual moisture or "cajete" (severe drought stress). Drought reduced the length and diameter of the internodes below the ears on the stalks of the four cultivars, a reduction that varied depending on the severity of the drought stress. The cultivars Criollo Cajete and Compuesto Temporal showed slight increases in the length and diameter of the internodes located above the ears. Under these circumstances, the greater length and diameter of internodes represents a moisture and assimilate sink for use in grain-filling, under reduced photosynthesis caused by drought. In addition, Criollo Cajete and Compuesto Temporal showed good grain yield under drought, making them likely candidates for use in a maize improvement program for the Oaxacan Mixteca region of Mexico.

Spanish

9802|AGRIS 9702

Jose Juan Caballero

CIMMYT Publications Collection

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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