Genetic variability of forage grass cultivars: A comparison of Festuca pratensis Huds., Lolium perenne L., and Dactylis glomerata L. |
| |
Authors: | R Kölliker FJ Stadelmann B Reidy J Nösberger |
| |
Institution: | (1) Institute of Plant Sciences, Swiss Federal Institute of Technology, CH–8092 Zurich, Switzerland |
| |
Abstract: | Three widely used cultivars of each of the species Festuca pratensis Huds., Lolium perenne L., and Dactylis glomerata L. were
investigated by means of randomly amplified polymorphic DNA (RAPD) markers and vegetative growth traits in order to investigate
genetic variability within each cultivar and to compare the level of diversity among cultivars and species. RAPD markers allowed
a clear separation of the three species. Genetic variability based on RAPD markers was considerably lower for F. pratensis
cultivars than for L. perenne and D. glomerata cultivars which showed similar levels of variability. The proportion of variability
due to variation within cultivars, determined by an analysis of molecular variance, was lower in F. pratensis (64.6%) than
in L. perenne (82.4%) and D. glomerata (85.1%). A comparison of F. pratensis and L. perenne, based on vegetative growth traits,
confirmed the differences in genetic variability within cultivars. F. pratensis showed lower coefficients of genetic variation
for eight of ten traits when compared to L. perenne. This study demonstrates considerable differences in genetic variability
which may have consequences for the adaptability and persistency of individual cultivars.
This revised version was published online in July 2006 with corrections to the Cover Date. |
| |
Keywords: | Dactylis glomerata L Festuca pratensis Huds genetic variability Lolium perenne L RAPD markers vegetative growth traits |
本文献已被 SpringerLink 等数据库收录! |
|