Espinoza Paz, N.

Efecto del deficit hidrico en la longitud y diametro de los entrenudos del tallo de cuatro cultivares de maiz - Mexico, DF (Mexico) CIMMYT : 1997 - Printed

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

968-6923-93-4


Drought stress
Nodes
Plant anatomy
Plant developmental stages
Resistance to injurious factors
Stems
Water deprivation
Zea mays

CIMMYT

633.153 / EDM
baner

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Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org