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Transpiration rate of chickpea wild accessions and cultivars in Turkey

OAR@ICRISAT

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Relation http://oar.icrisat.org/10704/
 
Title Transpiration rate of chickpea wild accessions and cultivars in Turkey
 
Creator Basdemir, F
Yıldırım, M
Biçer, B T
Vadez, V
Bükün, B
Cook, D R
 
Subject Chickpea
 
Description Chickpea (Cicer arietinum L.), like most cultivated crops, has exceedingly
narrow genetic and phenotypic diversity. Thus breeding
with only cultivated germplasm will have steeply diminishing
returns, raising an urgent need for new sources of diversity. The
focus of the research was to assess a representative set of newly
collected wild accessions of C. reticulatum and C. echinospermum,
for drought adaptation traits, i.e. transpiration rate (TR)
response to increasing VPD and to soil drying.
These experiments were conducted during the spring season
(18 March to 21 April 2016) at the Dicle University glasshouse.
The experimental design was a complete randomised block
design with six replications. Measurements were conducted
in late April during vegetative growth and VPD changed from
2.13 to 4.35 kPa. To measure TR, potted plants were weighed
at regular time intervals over the course of an entire day, and
therefore, under increasing VPD. At the end of the experiment
total leaf area was destructively measured, along with shoot,
root and leaf dry weights. There was a 2.31-fold range of variation
in the transpiration response among genotypes. The wild
genotypes Sirnak and Deste had extreme TR values exceeding
cultivated check cultivars, and several wild genotypes had only
a moderate increase in TR under increasing VPD. These moderate
TR responses provide germplasm sources with a potential
to limit water losses under high evaporative demand, akin to a
protection mechanism, especially under dry environments or in
future climates. These screenings, therefore, open an exciting
opportunity for breeding cultivars with enhanced performance
under harsh climates.
 
Date 2017-02
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/10704/1/Abstract%20208.pdf
Basdemir, F and Yıldırım, M and Biçer, B T and Vadez, V and Bükün, B and Cook, D R (2017) Transpiration rate of chickpea wild accessions and cultivars in Turkey. In: InterDrought-V, February 21-25, 2017, Hyderabad, India.