Wednesday, November 7, 2007
249-8

Morphological and Physiological Profile of Drought-Tolerant and Drought-Susceptible Maize Inbred Lines.

Antonio Castillo-Gutierrez1, Vicente E. Carapia-Ruiz1, Maria G. Almaguer-Sierra2, and Alfonso Enriquez-Morales2. (1) Universidad Autonoma del Estado de Morelos-Campus Oriente, Av. Nicolas Bravo S/N Parque Industrial Cuautla, Cuautla, Morelos, Mexico, (2) Centro de Bachillerato Tecnologico Agropecuario No. 55, Ej. La Soledad S/N, Padilla, Tamaulipas, Mexico

The aims of this research were to: i) evaluate the performance under irrigation and water deficit of three-drought tolerant and three-drought susceptible maize inbred lines and ii) identify morphological and physiological variables that differentiate drought-tolerant from drought-susceptible lines. Line evaluation was carried out under a Randomized Complete Block Design with three replications. Results indicated that the anthesis-silking interval and grain yield variables showed a differential performance under irrigation and water deficit.

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