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@ARTICLE{Soares:885471,
author = {Soares, Guilherme Filgueiras and Ribeiro Júnior, Walter
Quadros and Pereira, Lucas Felisberto and Lima, Cristiane
Andréa de and Soares, Daiane dos Santos and Muller, Onno
and Rascher, Uwe and Ramos, Maria Lucrecia Gerosa},
title = {{C}haracterization of wheat genotypes for drought tolerance
and water use efficiency},
journal = {Scientia agricola},
volume = {78},
number = {5},
issn = {1678-992X},
address = {Piracicaba},
publisher = {Univ.},
reportid = {FZJ-2020-03854},
pages = {e20190304},
year = {2021},
abstract = {The selection of wheat genotypes according to their drought
tolerance is essential to off-season cultivation. The
objective of this work was to characterize wheat genotypes
through yield and components, morphological characteristics
under water stress, and irrigated water use efficiency in
the Cerrado region in Brazil. Genotypes were planted during
the winters of 2016 and 2017 since there is no precipitation
during this season and water levels can be measured. They
were then submitted to four water regimes: WR1, WR2, WR3,
and WR4, representing 100 $\%,$ 83 $\%,$ 50 $\%,$ and 30
$\%$ of evapotranspiration replacement. The following
variables were evaluated: peduncle length (PL), number of
ears m−2 (NE m−2), hectoliter weight (HW), thousand
grain weight (TGW), drought resistance index (DRI),
irrigated water use efficiency (IWUE) and yield. Most
variables showed correlation with yield and can be a useful
tool for breeding programs. PL and HW were best correlated
with yield. BRS 264 (irrigated biotype) was productive in
treatments receiving the greatest number of irrigation
treatments. Given that WR1 registered the highest water
level, it was not expected that the rainfed biotype (BR18)
would show a higher yield than an irrigated biotype
(BRS254). BRS404 (rainfed biotype) was the most productive
under moderate stress treatment (WR3). Aliança (rainfed
biotype) showed a higher yield under severe stress. Rainfed
biotypes presented a higher DRI than the irrigated ones.
These genotypes can be used as a reference in breeding
programs under each water regime in which their performance
was outstanding. None of the variables studied contributed
to the selection of the most efficient wheat genotypes in
the IWUE.},
cin = {IBG-2},
ddc = {640},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000562743800001},
doi = {10.1590/1678-992x-2019-0304},
url = {https://juser.fz-juelich.de/record/885471},
}