Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Impact of high temperatures in maize: Phenology and yield components
Year:2018
Research Areas
  • Agriculture
Information
Abstract
Heat stress is a main threat to current and future global maize production. Adaptation of maize to future warmer conditions requires improving our understanding of crop responses to elevated temperatures. For this purpose, the same short-season (FAO 300) maize hybrid PR37N01 was grown over three years of field experiments on three contrasting Spanish locations in terms of temperature regime. The information complemented three years of greenhouse experiments with the same hybrid, applying heat treatments at various critical moments of the crop cycle. Crop phenology, growth, grain yield, and yield components were monitored. An optimized beta function improved the calculation of thermal time compared to the linear-cutoff estimator with base and optimum temperatures of 8 and 34 °C, respectively. Our results showed that warmer temperatures accelerate development rate resulting in shorter vegetative and reproductive phases (ca. 30 days for the whole cycle). Heat stress did not cause silking delay in relation to anthesis (extended anthesis-silking interval), at least in the range of temperatures (maximum temperature up to 42.9 °C in the field and up to 52.5 °C in the greenhouse) considered in this study. Our results indicated that maize grain yield is reduced under heat stress mainly via pollen viability that in turn determines kernel number, although a smaller but significant effect of the female component has been also detected.
International
Si
JCR
Si
Title
Field Crops Research
ISBN
0378-4290
Impact factor JCR
3,127
Impact info
Volume
216
10.1016/j.fcr.2017.11.013
Journal number
From page
129
To page
140
Month
SIN MES
Ranking
Participants
  • Autor: Jon Iñaqui Lizaso Oñate (UPM)
  • Autor: Margarita Ruiz Ramos (UPM)
  • Autor: M. Dolores Sanchez Yelamo (UPM)
  • Autor: Andres Rodriguez Dominguez (UPM)
  • Autor: Ignacio Grande Rodriguez (UPM)
  • Autor: Gabriel Rodriguez Romo (UPM)
  • Autor: C. Gabaldon-Leal
  • Autor: J.A. Oliveira
  • Autor: I., Lorite
  • Autor: I. Garcia
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Centro de Estudios e Investigación para la Gestión de Riesgos Agrarios Medioambientales (CEIGRAM). Centro Mixto UPM-AGROMUTUA-ENESA
  • Departamento: Producción Agraria
  • Departamento: Deportes
  • Departamento: Ingeniería Electrónica
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)