PMID- 27547208
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20160822
LR  - 20231105
IS  - 1664-462X (Print)
IS  - 1664-462X (Electronic)
IS  - 1664-462X (Linking)
VI  - 7
DP  - 2016
TI  - Identification of Water Use Strategies at Early Growth Stages in Durum Wheat from 
      Shoot Phenotyping and Physiological Measurements.
PG  - 1155
LID - 10.3389/fpls.2016.01155 [doi]
LID - 1155
AB  - 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.
FAU - Nakhforoosh, Alireza
AU  - Nakhforoosh A
AD  - Division of Agronomy, Department of Crop Sciences, University of Natural 
      Resources and Life Sciences Vienna, Austria.
FAU - Bodewein, Thomas
AU  - Bodewein T
AD  - Institute for Bio- and Geosciences-2 Plant Sciences, Forschungszentrum Julich 
      Julich, Germany.
FAU - Fiorani, Fabio
AU  - Fiorani F
AD  - Institute for Bio- and Geosciences-2 Plant Sciences, Forschungszentrum Julich 
      Julich, Germany.
FAU - Bodner, Gernot
AU  - Bodner G
AD  - Division of Agronomy, Department of Crop Sciences, University of Natural 
      Resources and Life Sciences Vienna, Austria.
LA  - eng
PT  - Journal Article
DEP - 20160805
PL  - Switzerland
TA  - Front Plant Sci
JT  - Frontiers in plant science
JID - 101568200
PMC - PMC4974299
OTO - NOTNLM
OT  - drought stress
OT  - durum wheat
OT  - phenotyping
OT  - stomata conductance
OT  - water use efficiency
EDAT- 2016/08/23 06:00
MHDA- 2016/08/23 06:01
PMCR- 2016/01/01
CRDT- 2016/08/23 06:00
PHST- 2016/05/23 00:00 [received]
PHST- 2016/07/19 00:00 [accepted]
PHST- 2016/08/23 06:00 [entrez]
PHST- 2016/08/23 06:00 [pubmed]
PHST- 2016/08/23 06:01 [medline]
PHST- 2016/01/01 00:00 [pmc-release]
AID - 10.3389/fpls.2016.01155 [doi]
PST - epublish
SO  - Front Plant Sci. 2016 Aug 5;7:1155. doi: 10.3389/fpls.2016.01155. eCollection 
      2016.