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@PHDTHESIS{Drieen:61996,
author = {Drießen, Sarah},
othercontributors = {Bartsch, Detlef},
title = {{B}eta vulgaris subsp. maritima an {D}eutschlands
{O}stseeküste : {K}artierung, genetische und physiologische
{C}harakterisierung und ihre {R}olle als {K}reuzungspartner
für transgene {Z}uckerrüben},
address = {Aachen},
publisher = {Publikationsserver der RWTH Aachen University},
reportid = {RWTH-CONV-123597},
pages = {VI, 104 S. : Ill., graph. Darst., Kt.},
year = {2003},
note = {Prüfungsjahr: 2003. - Publikationsjahr: 2004; Aachen,
Techn. Hochsch., Diss., 2003},
abstract = {B. vulgaris subsp. maritima (wild beet) has reached a high
importance in the context of the deliberate release of
genetically modified cultivated beets: as potential crossing
partner it faciliates an uncontrollable outcrossing of
genetically modified traits. In Germany, it occurs within a
short distance to sugar beet fields in the region of the
Baltic Sea. The aim of this study was to characterise these
Baltic populations in detail. This way, baseline-data can be
generated to measure possible ecological effects of
transgenic sugar beets. It was shown * that the documented
beets are really true wild beets and not escaped cultivated
beets. A characteristic of cytoplasmic male sterility (CMS),
that occurs in cultivated and weed beets, could not be found
in the investigated populations. * that B. vulgaris subsp.
maritima has established during the last years at Germany's
Baltic Sea coast. It still seems to spread out. In 1997
there have been 62 individuals at 5 locations, in 2001 there
have been more than 560 individuals at 16 locations. * that
increasing warmer winters could be the reason for this
spread. At least since 1997, beginning of the investigation,
there have been warmer winters in comparison to the last
decades. * that one part of the Baltic populations bolts and
flowers in the first year and it seems to be heterozygous
for the gene B. This disagrees with the general acceptance,
that northern European wild beets would flower in the second
year and are homozygous recessive (bb) for the gene.
Together with vegetation periods long enough, this could be
a further reason for the spread of B. vulgaris subsp.
maritima. * that the Baltic wild beets have a relatively low
genetic diversity $(18.28\%)$ and a close relationships
among themselves. Compared to further European populations
in a dendrogram, they form their own, isolated cluster. With
regard to a monitoring after deliberate release of
transgenic cultivated beets, the mapping work should go on
and regular investigations of the genetic diversity should
carried out. That way natural variation could be noticed and
a possible additional effect after deliberate release could
early be detected. Via specific markers (i.e. CMS), geneflow
from cultivated beet fields to wild beet habitats can be
measured.},
keywords = {Deutschland (SWD) / Meerstrandrübe (SWD) /
Populationsdynamik (SWD) / Populationsgenetik (SWD) /
Verbreitungsökologie (SWD) / Ostseeküste (SWD) / Kreuzung
<Biologie> (SWD) / Zuckerrübe (SWD)},
cin = {100000},
ddc = {580},
cid = {$I:(DE-82)100000_20140620$},
typ = {PUB:(DE-HGF)11},
urn = {urn:nbn:de:hbz:82-opus-8114},
doi = {10.18154/RWTH-CONV-123597},
url = {https://publications.rwth-aachen.de/record/61996},
}
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