English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/9596
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar bibText (RIS)Exportar csv (RIS)
Título

Maize Populations as Sources of Favorable Alleles to Improve Cold-Tolerant Hybrids

Autor Rodríguez Graña, Víctor Manuel; Malvar Pintos, Rosa Ana; Butrón Gómez, Ana María; Ordás Pérez, Amando; Revilla Temiño, Pedro
Palabras clave Maize Populations
Cold-Tolerant Hybrids
Fecha de publicación 1-sep-2007
EditorCrop Science Society of America
Citación Crop Science, 47:1779-1786 (2007)
ResumenLow spring temperatures are one of the main limiting factors for maize (Zea mays L.) growth along the European Atlantic coast. Several breeding programs have been performed to obtain cold-tolerant maize genotypes, but the few cold-tolerant inbreds and hybrids available need further improvements for cold tolerance and agronomic performance. The objective of this study was to identify cold-tolerant maize populations with favorable alleles to improve cold tolerance and agronomic performance in early sowing of two cold-tolerant hybrids. The parental inbred lines of two cold-tolerant hybrids were crossed to nine cold-tolerant populations. Tests were performed in a cold chamber and in the field for 2 yr at two locations. The populations Rojo de Tolosa and Puenteareas were the most promising sources of new favorable alleles for transferring cold tolerance to the hybrids EP80 x F7 and EP80 x Z78007, respectively. The populations Puenteareas and Silver King were the most outstanding donors to improve the agronomic performance of EP80 x F7 and EP80 x Z78007, respectively. Some improved versions of the cold-tolerant inbred parents could be developed from crosses between F7 or Z78007 and Puenteareas; alternatively, Rojo de Tolosa or Silver King could be used as donors of favorable alleles, but the simultaneous improvement of yield and cold tolerance is not straightforward. Abbreviations: lplµ', relative number of loci containing favorable alleles in a population and absent in a hybrid • NI, net improvement • PNGceg, probability of a net gain of favorable alleles when partial dominance or complementary epistasis is prevalent
Versión del editorhttp://crop.scijournals.org/cgi/reprint/47/5/1779
URI http://hdl.handle.net/10261/9596
ISSN0011-183X
Aparece en las colecciones: (MBG) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.