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Breeding perennial ryegrass for reducing costs in animal production



Breeding perennial ryegrass for reducing costs in animal production



Investigacion Agraria Produccion y Proteccion Vegetales 8(1): 5-16



Forty five half sib families of perennial ryegrass (Lolium perenne L.), have been created by mass selection from different Galician wild populations. They were evaluated at two locations in Galicia, as spaced plant nurseries and as plots in comparison with commercial controls and wild populations from 1989 to 1991. After an analysis of variance, the mean family values for 22 quantitative traits were submitted to a principal component analysis. Persistence, dry matter yields in spring, summer-autumn (2-nd and 3-rd year) at Puebla de Brollon were the most discriminant agronomic traits. The best families had values of persistence, dry matter yield in spring, summer-autumn and aftermath heading better than controls at Puebla de Brollon and a better dry matter yield in sununer-autumn (1-st and 2-nd year) at Mabegondo. No one family had all the agronomic traits of interest. The mother plants of the best families will be cross in a small polycross with the aim of creating a synthetic variety.

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Accession: 008245490

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