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@ARTICLE{Nakhforoosh:811996,
author = {Nakhforoosh, Alireza and Bodewein, Thomas and Fiorani,
Fabio and Bodner, Gernot},
title = {{I}dentification of {W}ater {U}se {S}trategies at {E}arly
{G}rowth {S}tages in {D}urum {W}heat from {S}hoot
{P}henotyping and {P}hysiological {M}easurements},
journal = {Frontiers in plant science},
volume = {7},
issn = {1664-462X},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2016-04297},
pages = {1155},
year = {2016},
abstract = {Modern imaging technology provides new approaches to plant
phenotyping for traits relevant to crop yield and resource
efficiency. Our objective was to investigate water use
strategies at early growth stages in durum wheat genetic
resources using shoot imaging at the ScreenHouse phenotyping
facility combined with physiological measurements. Twelve
durum landraces from different pedoclimatic backgrounds were
compared to three modern check cultivars in a greenhouse pot
experiment under well-watered $(75\%$ plant available water,
PAW) and drought $(25\%$ PAW) conditions. Transpiration rate
was analyzed for the underlying main morphological (leaf
area duration) and physiological (stomata conductance)
factors. Combining both morphological and physiological
regulation of transpiration, four distinct water use types
were identified. Most landraces had high transpiration rates
either due to extensive leaf area (area types) or both large
leaf areas together with high stomata conductance (spender
types). All modern cultivars were distinguished by high
stomata conductance with comparatively compact canopies
(conductance types). Only few landraces were water saver
types with both small canopy and low stomata conductance.
During early growth, genotypes with large leaf area had high
dry-matter accumulation under both well-watered and drought
conditions compared to genotypes with compact stature.
However, high stomata conductance was the basis to achieve
high dry matter per unit leaf area, indicating high
assimilation capacity as a key for productivity in modern
cultivars. We conclude that the identified water use
strategies based on early growth shoot phenotyping combined
with stomata conductance provide an appropriate framework
for targeted selection of distinct pre-breeding material
adapted to different types of water limited environments.},
cin = {IBG-2},
ddc = {570},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582) / EPPN - European Plant
Phenotyping Network (284443)},
pid = {G:(DE-HGF)POF3-582 / G:(EU-Grant)284443},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000380919000001},
pubmed = {pmid:27547208},
doi = {10.3389/fpls.2016.01155},
url = {https://juser.fz-juelich.de/record/811996},
}