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 423847
Title Genomic regions in crop-wild hybrids of Lettuce are affected differrently in different environments: implications for crop breeding
Author(s) Hartman, Y.; Hooftman, D.A.P.; Uwimana, B.; Wiel, C.C.M. van de; Smulders, M.J.M.; Visser, R.G.F.; Tienderen, P.H. van
Source Evolutionary Applications 5 (2012)6. - ISSN 1752-4563 - p. 629 - 640.
DOI https://doi.org/10.1111/j.1752-4571.2012.00240.x
Department(s) Laboratory of Plant Breeding
WUR Plant Breeding
EPS
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) quantitative trait loci - lactuca-serriola asteraceae - genetically-modified crops - avena-barbata - arabidopsis-thaliana - field conditions - natural environments - domestication traits - population-genetics - tandem constructs
Abstract Many crops contain domestication genes that are generally considered to lower fitness of crop–wild hybrids in the wild environment. Transgenes placed in close linkage with such genes would be less likely to spread into a wild population. Therefore, for environmental risk assessment of GM crops, it is important to know whether genomic regions with such genes exist, and how they affect fitness. We performed quantitative trait loci (QTL) analyses on fitness(-related) traits in two different field environments employing recombinant inbred lines from a cross between cultivated Lactuca sativa and its wild relative Lactuca serriola. We identified a region on linkage group 5 where the crop allele consistently conferred a selective advantage (increasing fitness to 212% and 214%), whereas on linkage group 7, a region conferred a selective disadvantage (reducing fitness to 26% and 5%), mainly through delaying flowering. The probability for a putative transgene spreading would therefore depend strongly on the insertion location. Comparison of these field results with greenhouse data from a previous study using the same lines showed considerable differences in QTL patterns. This indicates that care should be taken when extrapolating experiments from the greenhouse, and that the impact of domestication genes has to be assessed under field conditions.
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