caa a22 4500 475795784 CHVBK 20180406123723.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1007/s001220051370 doi (NATIONALLICENCE)springer-10.1007/s001220051370 Temporal trends in the diversity of UK wheat [Elektronische Daten] [P. Donini, J. R. Law, R. M. D. Koebner, J. C. Reeves, R. J. Cooke] Abstract : The common assertion that scientific plant breeding leads to a narrowing in crop diversity has been examined. We have characterised the dominant UK winter wheat varieties from the period 1934-1994 using two types of PCR-based DNA profiling (AFLPs, amplified fragment length polymorphisms, and SSRs, simple-sequence repeats, microsatellites), seed storage protein analysis and morphological descriptors. The varieties were grouped into a series of decadal groups on the basis of their first appearance on the 'Recommended List', and by analysis of molecular variance it was shown that an overwhelming proportion of the overall observed variance occurred within, rather than between, decades. A further range of statistical indices provided little evidence for any significant narrowing of overall diversity over the time studied. Principal co-ordinate analysis showed that the diversity in the time periods overlapped and that the most modern group of varieties encompassed the majority of the diversity found in earlier decades. The consistent indication is that plant breeding has resulted, over time, in a qualitative, rather than a quantitative, shift in the diversity of winter wheat grown in the UK. Springer-Verlag Berlin Heidelberg, 2000 Key words Triticum aestivum nationallicence Morphological characters nationallicence Molecular markers nationallicence Genetic diversity nationallicence Plant breeding nationallicence Donini P. John Innes Centre, Norwich NR4 7UH, UK, GB aut Law J. R. National Institute of Agricultural Botany, Cambridge CB3 0LE, UK e-mail: robert.cooke@niab.com, CK aut Koebner R. M. D. John Innes Centre, Norwich NR4 7UH, UK, GB aut Reeves J. C. National Institute of Agricultural Botany, Cambridge CB3 0LE, UK e-mail: robert.cooke@niab.com, CK aut Cooke R. J. National Institute of Agricultural Botany, Cambridge CB3 0LE, UK e-mail: robert.cooke@niab.com, CK aut https://doi.org/10.1007/s001220051370 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001220051370 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Donini P. John Innes Centre, Norwich NR4 7UH, UK, GB aut NATIONALLICENCE 700 1- Law J. R. National Institute of Agricultural Botany, Cambridge CB3 0LE, UK e-mail: robert.cooke@niab.com, CK aut NATIONALLICENCE 700 1- Koebner R. M. D. John Innes Centre, Norwich NR4 7UH, UK, GB aut NATIONALLICENCE 700 1- Reeves J. C. National Institute of Agricultural Botany, Cambridge CB3 0LE, UK e-mail: robert.cooke@niab.com, CK aut NATIONALLICENCE 700 1- Cooke R. J. National Institute of Agricultural Botany, Cambridge CB3 0LE, UK e-mail: robert.cooke@niab.com, CK aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer