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@ARTICLE{Belachew:843863,
author = {Belachew, Kiflemariam Yehuala and Nagel, Kerstin and
Fiorani, Fabio and Stoddard, Frederick L.},
title = {{D}iversity in root growth responses to moisture deficit in
young faba bean ( {V}icia faba {L}.) plants},
journal = {PeerJ},
volume = {6},
issn = {2167-8359},
address = {London [u.a.]},
reportid = {FZJ-2018-01394},
pages = {e4401 -},
year = {2018},
abstract = {BackgroundSoil moisture deficiency causes yield reduction
and instability in faba bean (Vicia faba L.) production. The
extent of sensitivity to drought stress varies across
accessions originating from diverse moisture regimes of the
world. Hence, we conducted successive greenhouse experiments
in pots and rhizotrons to explore diversity in root
responses to soil water deficit.MethodsA set of 89
accessions from wet and dry growing regions of the world was
defined according to the Focused Identification of Germplasm
Strategy and screened in a perlite-sand medium under well
watered conditions in a greenhouse experiment. Stomatal
conductance, canopy temperature, chlorophyll concentration,
and root and shoot dry weights were recorded during the
fifth week of growth. Eight accessions representing the
range of responses were selected for further investigation.
Starting five days after germination, they were subjected to
a root phenotyping experiment using the automated
phenotyping platform GROWSCREEN-Rhizo. The rhizotrons were
filled with peat-soil under well watered and water limited
conditions. Root architectural traits were recorded five,
12, and 19 days after the treatment (DAT) began.ResultsIn
the germplasm survey, accessions from dry regions showed
significantly higher values of chlorophyll concentration,
shoot and root dry weights than those from wet regions. Root
and shoot dry weight as well as seed weight, and chlorophyll
concentration were positively correlated with each other.
Accession DS70622 combined higher values of root an},
cin = {IBG-2},
ddc = {570},
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:29492343},
UT = {WOS:000426518200005},
doi = {10.7717/peerj.4401},
url = {https://juser.fz-juelich.de/record/843863},
}