Abstract
In the South-eastern Anatolia Region, where the climate is favorable to cultivation for durum wheat, there have been notable reductions in both yield and quality due to biotic and abiotic stress factors in the region. Primary one of these stresses is high-temperature stress. High-temperature stress, specifically during the late flowering stage and early grain filling stage, results in substantial reductions in both crop yield and quality. In this study, several practical, easily and rapidly quantifiable physiological, morphological, and yield-related parameters that may be used in durum wheat improvement programs in the region for high-temperature stress tolerance were investigated. Ninety landrace durum genotypes and 4 standard cultivars were used. The study was carried out at GAP (South-eastern Anatolia Project) International Agricultural Research and Training Centre in an air conditioning room according to an augmented design under optimum conditions and stressful conditions where high-temperature stress was created. Compared to optimum conditions, there were reductions in flag leaf greening time by 20%, days to maturity by 7%, spike length by 10%, peduncle length by 18%, grain filling time by 23%, number of spikelets on the spike by 12%, number of grains on the spike by 39%, and thousand-kernel weight by 33%, while grain filling rate increased under high-temperature stress conditions. The genotypes 82, 83, 87, 88, 99, and 103 and the standard varieties Artuklu and Sümerli prevailed in both optimum and stress conditions. The fact that leaf erectness, flag leaf greening time, grain filling time, and leaf chlorophyll content among morphological and physiological characteristics had a significant correlation with yield components under both conditions indicates that these characteristics can be used as selection criteria for tolerance to stressful conditions in the region.
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Claims 13
Claim · model-written summary
High temperature reduced flag leaf greening time by 20%.
- Taxon
- durum wheat
Triticum turgidum subsp. durumt0 - Treatment
- high-temperature stresse2
- Outcome
- flag leaf greening timee0
- Direction
- reductionse1
- Value
- 20%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“flag leaf greening time by 20%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
High temperature reduced days to maturity by 7%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stresse2
- Outcome
- days to maturitye0
- Direction
- reductionse1
- Value
- 7%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“days to maturity by 7%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
High temperature reduced spike length by 10%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stresse2
- Outcome
- spike lengthe0
- Direction
- reductionse1
- Value
- 10%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“spike length by 10%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
High temperature reduced peduncle length by 18%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stresse2
- Outcome
- peduncle lengthe0
- Direction
- reductionse1
- Value
- 18%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“peduncle length by 18%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
High temperature reduced grain filling time by 23%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stresse2
- Outcome
- grain filling timee0
- Direction
- reductionse1
- Value
- 23%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“grain filling time by 23%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
High temperature reduced number of spikelets on the spike by 12%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stresse2
- Outcome
- number of spikelets on the spikee0
- Direction
- reductionse1
- Value
- 12%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“number of spikelets on the spike by 12%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
High temperature reduced number of grains on the spike by 39%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stresse2
- Outcome
- number of grains on the spikee0
- Direction
- reductionse1
- Value
- 39%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“number of grains on the spike by 39%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
High temperature reduced thousand-kernel weight by 33%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stresse2
- Outcome
- thousand-kernel weighte0
- Direction
- reductionse1
- Value
- 33%e0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“thousand-kernel weight by 33%”
e1“Compared to optimum conditions, there were reductions in”
e2“high-temperature stress conditions”
Claim · model-written summary
Grain filling rate increased under high temperature.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- high-temperature stress conditionse0
- Outcome
- grain filling ratee0
- Direction
- increasede0
- Comparator
- optimum conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“grain filling rate increased under high-temperature stress conditions”
e1“Compared to optimum conditions”
Claim · model-written summary
Genotypes 82, 83, 87, 88, 99, and 103 prevailed in both conditions.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Material
- 82, 83, 87, 88, 99, and 103e0
- Outcome
- prevailed in both optimum and stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“The genotypes 82, 83, 87, 88, 99, and 103 and the standard varieties Artuklu and Sümerli prevailed in both optimum and stress conditions.”
Claim · model-written summary
Artuklu and Sümerli prevailed in both conditions.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Material
- Artuklu and Sümerlie0
- Outcome
- prevailed in both optimum and stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“the standard varieties Artuklu and Sümerli prevailed in both optimum and stress conditions”
Claim · model-written summary
Leaf erectness, flag leaf greening time, grain filling time, and chlorophyll content correlated significantly with yield components under both conditions.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Organ / stage
- leafe0
- Outcome
- yield componentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“leaf erectness, flag leaf greening time, grain filling time, and leaf chlorophyll content among morphological and physiological characteristics had a significant correlation with yield components under both conditions”
Claim · model-written summary
The authors propose these correlated traits as heat-tolerance selection criteria.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- selection criteria for tolerance to stressful conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“durum wheat”
e0“these characteristics can be used as selection criteria for tolerance to stressful conditions in the region”
The same questions in other papers
heat · yield · Triticum turgidum (rivet wheat)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- negative
3 papers more in this group
See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.