Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 407516
Title Genetic erosion in crops: concept, research results and challenges
Author(s) Wouw, M.J. van de; Kik, C.; Hintum, T.J.L. van; Treuren, R. van; Visser, L.
Source Plant genetic resources: characterization and utilization 8 (2010)1. - ISSN 1479-2621 - p. 1 - 15.
Department(s) Centrum voor Genetische Bronnen Nederland
Centre for Genetic Resources, The Netherlands
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) genetische diversiteit - plantenveredeling - veredelde rassen - landrassen - genetische erosie - modernisering - genetic diversity - plant breeding - improved varieties - landraces - genetic erosion - modernization - spring bread wheat - oryza-sativa l. - allelic diversity changes - farmers seed selection - triticum-aestivum l. - microsatellite markers - molecular diversity - green-revolution - temporal trends - durum desf.
Categories Plant Breeding and Genetics (General) / Population and Quantitative Genetics
Abstract The loss of variation in crops clue to the modernization of agriculture has been described as genetic erosion The current paper discusses the different views that exist on the concept of genetic erosion in crops Genetic erosion of cultivated diversity is reflected in a modernization bottleneck in the diversity levels that occurred during the history of the crop Two stages in this bottleneck are recognized the initial replacement of landraces by modern cultivars, and further trends in diversity as a consequence of modern breeding practices Genetic erosion may occur at three levels of integration crop, variety and allele The different approaches in the recent literature to measure genetic erosion in crops are reviewed. Genetic erosion as reflected in a reduction of allelic evenness and richness appears to be the most useful definition, but has to be viewed in conjunction with events at variety level According to the reviewed literature, the most likely scenario of diversity trends during modernization is the following a reduction in diversity clue to the replacement of landraces by modern cultivars, but no further reduction after this replacement has been completed
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