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@ARTICLE{Sundgren:850310,
author = {Sundgren, Tove Kristina and Uhlen, Anne Kjersti and
Lillemo, Morten and Briese, Christoph and Wojciechowski,
Tobias},
title = {{R}apid seedling establishment and a narrow root stele
promotes waterlogging tolerance in spring wheat},
journal = {Journal of plant physiology},
volume = {227},
issn = {0176-1617},
address = {München},
publisher = {Elsevier},
reportid = {FZJ-2018-04352},
pages = {45-55},
year = {2018},
abstract = {Improving the waterlogging tolerance of wheat varieties
could alleviate yield constraints caused by excessive rain
and poor soil drainage. In this study, we investigated root
and shoot growth as well as anatomical traits of six spring
wheat genotypes with contrasting waterlogging tolerance
properties. Our aim was to identify root traits that
differentiate tolerant from sensitive genotypes. Two
experiments were conducted using rhizoboxes and photography
for data acquisition. In experiment one, root growth of the
genotypes was studied during seedling establishment and a
subsequent waterlogging treatment, starting at the 3-leaf
stage and maintained for seven days. In the second
experiment, root and shoot growth of previously waterlogged
plants was compared between the genotypes during seven days
of recovery. At harvest of experiment two, root segments
were sampled to investigate genotype differences of root
cross sectional area, root cortex area, stele area and
percentage of aerenchyma. The results show that tolerant, in
contrast to sensitive genotypes, developed seminal roots
faster in the seedling establishment phase and more nodal
roots during the waterlogging treatment. NK93602 and Bjarne
were the best performing genotypes. Bjarne in particular had
a narrower relative stele size of nodal $(13.4\%)$ and
seminal roots $(11.7\%)$ compared to other genotypes (e.g.
$16.3\%$ in nodal roots and $13.9\%$ in seminal roots of
sensitive Quarna). The results from this study suggests that
early vigor is an important trait for waterlogging tolerance
in the field. Anatomical root traits, such as a narrow stele
and aerenchyma may contribute to improving waterlogging
tolerance furthermore.},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29735176},
UT = {WOS:000439100400005},
doi = {10.1016/j.jplph.2018.04.010},
url = {https://juser.fz-juelich.de/record/850310},
}