caa a22 4500 477134149 CHVBK 20180405111712.0 cr unu---uuuuu 170330e19970201xx s 000 0 eng 10.1023/A:1002988617100 doi (NATIONALLICENCE)springer-10.1023/A:1002988617100 Isozyme and quantitative traits polymorphisms in European provenances of perennial ryegrass (Lolium perenne L) [Elektronische Daten] [W.M. Ursla Fernando, M.D. Hayward, M.J. Kearsey] Twenty populations of Lolium perenne originating from a range of habitats in Europe were compared for isoenzyme polymorphisms and agronomically important quantitative traits in order to establish relationships of the levels of diversity with the origin of each population and to assess their suitability to be included in the European core collection of Lolium germplasm. Forty genotypes from each of the twenty populations and each genotype represented by three clonal propagules, were field planted in a fully randomized spaced plant design and fifteen quantitative characters including yield, persistency, reproductive and disease resistence characters were evaluated over a period of two years. Seven putative isozyme loci were assayed to compare the allozyme divergence of populations. The results of the isozyme survey indicate that 71-100% of the loci were polymorphic, 2.3-3.0 alleles/locus and the gene diversity was varying from 0.234-0.410. Of the total allelic diversity 94% remained within populations (Hs) whilst only 6% was distributed among populations (Dst). The differences between populations were determined on the basis of allele frequencies and multivariate analyses of quantitative characters. Populations significantly differed in their allele frequencies at all loci analysed. Random mating was predominant in all populations at most of the loci. The study revealed that the German accession BA 10998 was clearly distinct from the rest both in quantitative characters and allele frequencies. German accession BA 11015 with the lowest gene diversity showed the highest genetic variation for quantitative characters. However, no strict relationship was found between the genetic distance and the geograpical distribution of the populations. Among the quantitative characters, flowering time showed a strong relationship with the type of management practised at the collection site than their place of origin. Kluwer Academic Publishers, 1997 quantitative traits nationallicence isoenzyme variation nationallicence Lolium perenne nationallicence perennial ryegrass nationallicence multivariate analysis nationallicence Ursla Fernando W.M. School of Biological Sciences, University of Birmingham, B 15 2 TT, Birmingham, United Kingdom aut Hayward M.D. AFRC Institute of Grassland and Environmental Research, Plas Gogerddan, SY23 3EB, Aberystwyth, Dyfed, United Kingdom aut Kearsey M.J. School of Biological Sciences, University of Birmingham, B 15 2 TT, Birmingham, United Kingdom aut Euphytica Kluwer Academic Publishers 93/3(1997-02-01), 263-269 0014-2336 93:3<263 1997 93 10681 https://doi.org/10.1023/A:1002988617100 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002988617100 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ursla Fernando W.M. School of Biological Sciences, University of Birmingham, B 15 2 TT, Birmingham, United Kingdom aut NATIONALLICENCE 700 1- Hayward M.D. AFRC Institute of Grassland and Environmental Research, Plas Gogerddan, SY23 3EB, Aberystwyth, Dyfed, United Kingdom aut NATIONALLICENCE 700 1- Kearsey M.J. School of Biological Sciences, University of Birmingham, B 15 2 TT, Birmingham, United Kingdom aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 93/3(1997-02-01), 263-269 0014-2336 93:3<263 1997 93 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer