Limited genotype- and ploidy-related variation in the nutritive value of perennial ryegrass (Lolium perenne L.)
Water-soluble carbohydrates and fibre fractions are important traits that influence forage utilization by the ruminant. Little is known about the quality variation among perennial ryegrass genotypes within the same maturity group or between near-isogenic diploids and tetraploids. The
current study was carried out in the form of two experiments on two successive years (2006–2007) in three sites in Northern Germany. The main aim was to investigate the variation in nutritive value that could be attributed to differences in maturity among 20 intermediate heading perennial
ryegrass genotypes or to differences in ploidy between near-isogenic diploids and tetraploids. Results of the first experiment revealed significant variation among the 20 tested genotypes in the investigated quality parameters that were consistent with the discovered variation in the maturity
of the genotypes determined in terms of their Mean Stage by Count (MSC). In the second experiment, few but consistent significant differences were detected between near-isogenic diploids and tetraploids. The tetraploid derivatives had always significantly higher water-soluble carbohydrate
content and lower neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) than their near-isogenic diploid parents.
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Mean Stage by Count;
Document Type: Research Article
Institute of Crop Science and Plant Breeding, Grass and Forage Science/Organic Agriculture,Christian-Albrecht University of Kiel, Kiel, Germany
Euro Grass Breeding GmbH & Co. KG, Asendorf, Germany
Norddeutsche Pflanzenzucht (NPZ), Hans-Georg Lembke KG, Malchow/Poel, Germany
Deutsche Saatveredelung AG, Lippstadt, Germany
Publication date: 2012-01-01
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