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BREEDING EARLY ITALIAN RYEGRASS (Lolium multiflorum LAM.) FOR ROTATION WITH MAIZEIN NORTHWEST SPAIN

Authors: Lindner Selbmann, R.; Oliveira Prendes, J. A.; García de Yzaguirre, A.;

BREEDING EARLY ITALIAN RYEGRASS (Lolium multiflorum LAM.) FOR ROTATION WITH MAIZEIN NORTHWEST SPAIN

Abstract

[ES] Se describen los procedimientos usados para obtener una variedad de raigrás italiano precoz a partir de razas locales del noroeste español, para su rotación con maíz (una práctica frecuente en Galicia). Comenzando con una población precoz tipo Westerwoldicum -cuya naturaleza anual y reespigado permite una mejora rápida-, se aplicaron dos ciclos de selección intrapoblacional, uno de selección individual y otro de selección combinada (individual/familiar de medios hermanos). Aunque las familias seleccionadas fueron menos productivas que los cultivares comerciales, su crecimiento invernal fue mejor. Cuatro familias fueron seleccionadas independientemente en dos localidades de distinto clima y suelo, sugiriendo una buena adaptación a la zona costera de La Coruña y Pontevedra. El interés de una variedad sintética experimental obtenida por el cruzamiento de las mejores plantas dentro de dichas familias se está evaluando actualmente.

[EN] Breeding procedures used for the development of an early Italian ryegrass variety from NorthWest Spain's landraces are described with the objective of a rotation with maize (a frequent Galician practice). Starting with an early Westerwoldicum landrace - whose annual nature and aftermath heading allows for rapid breeding-, two cycles of intrapopulation selection, one of individual selection and another of combined individual/ half-sib family selection were applied. Although selected families were less productive than commercial cultivars, their winter vigour was better. Four families were independently selected in two climatically and edaphically different localities, showing a good adaptation to coastal áreas of La Coruña and Pontevedra. The interest of a synthetic experimental cultivar obtained by crossing the best plants from these families is being evaluated.

This work was conducted under the tenure of a reincorporation research contract from the Spanish M.E.C. by A. García.

10 páginas y 5 tablas.

Peer reviewed

Keywords

Lolium multiflorum, Recursos fitogenéticos, Mejora de gramíneas pratenses, Grass breeding, Genetic resources

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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