IFEVA   02662
INSTITUTO DE INVESTIGACIONES FISIOLOGICAS Y ECOLOGICAS VINCULADAS A LA AGRICULTURA
Unidad Ejecutora - UE
artículos
Título:
Genotypic variability and response to water stress of pre and post anthesis phases in triticale
Autor/es:
GASPAR ESTRADA-CAMPUZANO; MIRALLES DANIEL J; SLAFER GA
Revista:
EUROPEAN JOURNAL OF AGRONOMY
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2008 vol. 28 p. 171 - 177
ISSN:
1161-0301
Resumen:
Abstract
A better understanding of responsiveness of time to anthesis to water stress in triticale and wheat might help to explain their differences in
performance under stress and to identify which attributes or components of time to anthesis are most affected. Three experiments were carried
out during the 2004 and 2005 growing seasons to (i) evaluate genotypic variability in phenology responsiveness to drought in triticale and to (ii)
explore the variation in the duration of pre-anthesis phases occurring before and after the onset of stem elongation as well as their responsiveness to
water stress. Important variation was found among triticale cultivars on time to anthesis, allowing classification of cultivars into long, intermediate
and short cycle. Differences in the duration of the stem elongation phase (i.e. from terminal spikelet initiation (TS) to anthesis (ANT)) were as high
as 200 ◦Cd for cultivars with similar time to flowering. Although water stress reduced the time to anthesis (in average by ca. 125 ◦Cd), cultivars
showed a differential responsiveness to drought in phases occurring before or after TS. Some cultivars that were highly sensitive to drought in the
emergence (Eme)TS phase were insensitive in the phase TSANT and vice-versa. Water shortage tended to reduce the grain filling period and
was most evident when a Mediterranean environment treatment was simulated.
© 2007 Elsevier B.V. All rights reserved.
showed a differential responsiveness to drought in phases occurring before or after TS. Some cultivars that were highly sensitive to drought in the
emergence (Eme)TS phase were insensitive in the phase TSANT and vice-versa. Water shortage tended to reduce the grain filling period and
was most evident when a Mediterranean environment treatment was simulated.
© 2007 Elsevier B.V. All rights reserved.
showed a differential responsiveness to drought in phases occurring before or after TS. Some cultivars that were highly sensitive to drought in the
emergence (Eme)TS phase were insensitive in the phase TSANT and vice-versa. Water shortage tended to reduce the grain filling period and
was most evident when a Mediterranean environment treatment was simulated.
© 2007 Elsevier B.V. All rights reserved.
showed a differential responsiveness to drought in phases occurring before or after TS. Some cultivars that were highly sensitive to drought in the
emergence (Eme)TS phase were insensitive in the phase TSANT and vice-versa. Water shortage tended to reduce the grain filling period and
was most evident when a Mediterranean environment treatment was simulated.
© 2007 Elsevier B.V. All rights reserved.
◦Cd for cultivars with similar time to flowering. Although water stress reduced the time to anthesis (in average by ca. 125 ◦Cd), cultivars
showed a differential responsiveness to drought in phases occurring before or after TS. Some cultivars that were highly sensitive to drought in the
emergence (Eme)TS phase were insensitive in the phase TSANT and vice-versa. Water shortage tended to reduce the grain filling period and
was most evident when a Mediterranean environment treatment was simulated.
© 2007 Elsevier B.V. All rights reserved.