Effect of allele combinations at Ppd‐1 loci on durum wheat grain filling at contrasting latitudes
Visualitza/Obre
Autor/a
Arjona, Jose M.
Dreisigacker, Susanne
Ammar, Karim
Subirà, Joan
Data de publicació
2019-09-15ISSN
0931-2250
Resum
Flowering time is the most critical developmental stage in wheat, as it determines environmental conditions during grain filling. Thirty‐five spring durum genotypes carrying all known allele variants at P p d ‐1 loci were evaluated in fully irrigated field experiments for three years at latitudes of 41°N (Spain), 27°N (northern Mexico) and 19°N (southern Mexico). Relationships between weight of central grains of main spikes (W) and thermal time from flowering to maturity were described by a logis‐tic equation. Differences in flowering time between the allele combination causing the earliest (GS100/Ppd‐B1a) and the latest (Ppd‐A1b/Ppd‐B1a) flowering were 7, 20 and 18 days in Spain, northern Mexico and southern Mexico, respectively. Flowering delay drastically reduced the mean grain filling rate (R) and W at all sites. At autumn‐sowing sites, an increase of 1°C in mean temperature during the first half of the grain filling period decreased W by 5.2 mg per grain. At these sites, W was strongly dependent on R. At the spring‐sowing site (southern Mexico), W depended on both Rand grain filling duration. Our results suggest that incorporating the allele combina‐tions GS100/Ppd‐B1a and GS105/Ppd‐B1a (alleles conferring photoperiod insensitiv‐ity) in newly released varieties can reduce the negative effects of climate change on grain filling at the studied latitudes
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
633 - Cultius i produccions
Pàgines
12
Publicat per
Wiley
Publicat a
Journal of Agronomy and Crop Science
Citació
Arjona, Jose M., Conxita Royo, Susanne Dreisigacker, Karim Ammar, Joan Subirà, and Dolors Villegas. 2019. "Effect Of Allele Combinations At Ppd‐1 Loci On Durum Wheat Grain Filling At Contrasting Latitudes". Journal Of Agronomy And Crop Science. Wiley. doi:10.1111/jac.12363.
Número de l'acord de la subvenció
INIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2015-00038-00-00/ES/La constitución alélica para genes responsables de la adaptación fenológica como estrategia para minimizar las limitaciones ambientales al rendimiento del trigo. Casos de estudio en ambientes objetivo de ambos hemisferios/PHENOFITTING
INIA/Programa Nacional de Proyectos de Investigación Fundamental/RTA2009-00085-00-00/ES/Bases fenológicas y genéticas de los patrones de adaptación del trigo duro a diversas condiciones fototérmicas y su utilidad para el desarrollo de germoplasma en el marco de la relación España-CIMMYT/
MEC/Programa Nacional de recursos y tecnologías agroalimentarias/AGL2006-09226-CO2-01/ES/NUEVAS VIAS PARA MEJORAR LA ADAPTACION DEL TRIGO DURO, TRITICUM TURGIDUM L. VAR. DURUM, A AMBIENTES MEDITERRANEOS/
Programa
Cultius Extensius Sostenibles
Aquest element apareix en la col·lecció o col·leccions següent(s)
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