Breeding forage grasses capable of using nitrogen (N) fertiliser inputs more efficiently offers a clean technology route to increased sustainability of livestock production, via lowering recommended fertilizer rates, reducing the agricultural footprint with respect to pollution and reducing the wider consumption of non-renewable resources. To identify and incorporate new genes associated with nitrogen use efficiency (NUE) in perennial ryegrass (Lolium perenne) cultivars, we are making use of a research programme in which genetic mapping and marker assisted selection of traits are practiced simultaneously. A mapping population in the genetic background of the current elite cultivar AberMagic has been developed which segregates for N uptake and N utilisation efficiencies as well as a number of forage quality and productivity traits. By phenotyping this population under highly controlled optimal and limiting regimes of N supply in flowing solution culture, a number of genomic regions mapping to linkage groups 1, 2, 5 and 7 have been identified affecting nitrogen relations.
|Pages||Abstract No: P82|
|Publication status||Published - 2009|
|Event||18th Meeting of the Eucarpia Fodder Crops and Amenity Grasses Section - La Rochelle, France|
Duration: 10 May 2009 → 14 May 2009
|Conference||18th Meeting of the Eucarpia Fodder Crops and Amenity Grasses Section|
|Period||10 May 2009 → 14 May 2009|