Abstract
Drought is the most restricting factor in agricultural production in arid and semi-arid regions. This research was conducted on 19 facultative and winter wheat genotypes grown under normal irrigation (N), early post-anthesis (S1), and late post-anthesis (S 2) drought stress conditions. The experiments were conducted at Karadj, Arak, and Jolgehrokh Agricultural Research Stations in Iran, during 2008 -11 cropping seasons. Stress reduced grain number per spike, thousand grain weight, grain weight per spike, harvest index, biological weight, and grain yield. Effect of environment, irrigation, and genotype on most of the traits, including grain yield, was significant. Remobilization, efficiency of remobilization, and pre-anthesis photo-assimilate contribution to grain filling increased under drought stress condition. Correlation coefficients between those traits and grain yield were significantly positive under N, S 1, and S 2 conditions. Based on different drought tolerance indices, the improved line Alvd//Aldan/Ias58*2/3/Gaspard was identified as the most tolerant genotype under anthesis and post-anthesis drought stress conditions. It also had the highest remobilization, efficiency of remobilization, and preanthesis photo-assimilate contribution to grain filling under drought stress conditions.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Drought stress reduced grain number per spike, thousand grain weight and grain weight per spike compared with normal irrigation.
- Taxon
- Triticum aestivum
Triticum aestivumt0 - Treatment
- drought stresse0
- Outcome
- grain number per spike, thousand grain weight, grain weight per spikee1
- Direction
- reducede1
- Comparator
- normal irrigation (N)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological-based Selection Criteria for Terminal Drought in Wheat ( Triticum aestivum L.)”
e0“This research was conducted on 19 facultative and winter wheat genotypes grown under normal irrigation (N), early post-anthesis (S1), and late post-anthesis (S 2) drought stress conditions”
e1“Stress reduced grain number per spike, thousand grain weight, grain weight per spike, harvest index, biological weight, and grain yield”
Claim · model-written summary
Drought stress reduced harvest index, biological weight and grain yield compared with normal irrigation.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- drought stresse0
- Outcome
- harvest index, biological weight, and grain yielde1
- Direction
- reducede1
- Comparator
- normal irrigation (N)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological-based Selection Criteria for Terminal Drought in Wheat ( Triticum aestivum L.)”
e0“This research was conducted on 19 facultative and winter wheat genotypes grown under normal irrigation (N), early post-anthesis (S1), and late post-anthesis (S 2) drought stress conditions”
e1“Stress reduced grain number per spike, thousand grain weight, grain weight per spike, harvest index, biological weight, and grain yield”
Claim · model-written summary
Environment, irrigation and genotype significantly affected most traits, including grain yield.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Outcome
- grain yielde2
- Qualifier
- Effect of environment, irrigation, and genotype on most of the traitse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological-based Selection Criteria for Terminal Drought in Wheat ( Triticum aestivum L.)”
e2“Effect of environment, irrigation, and genotype on most of the traits, including grain yield, was significant”
Claim · model-written summary
Remobilization, remobilization efficiency and pre-anthesis photo-assimilate contribution to grain filling increased under drought stress.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- drought stress conditione3
- Outcome
- Remobilization, efficiency of remobilization, and pre-anthesis photo-assimilate contribution to grain fillinge3
- Direction
- increasede3
- Comparator
- normal irrigation (N)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological-based Selection Criteria for Terminal Drought in Wheat ( Triticum aestivum L.)”
e0“This research was conducted on 19 facultative and winter wheat genotypes grown under normal irrigation (N), early post-anthesis (S1), and late post-anthesis (S 2) drought stress conditions”
e3“Remobilization, efficiency of remobilization, and pre-anthesis photo-assimilate contribution to grain filling increased under drought stress condition”
Claim · model-written summary
Correlation coefficients between the remobilization traits and grain yield were significantly positive under N, S1 and S2 conditions.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- N, S 1, and S 2 conditionse4
- Outcome
- Correlation coefficients between those traits and grain yielde4
- Direction
- positivee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological-based Selection Criteria for Terminal Drought in Wheat ( Triticum aestivum L.)”
e4“Correlation coefficients between those traits and grain yield were significantly positive under N, S 1, and S 2 conditions”
Claim · model-written summary
The improved line Alvd//Aldan/Ias58*2/3/Gaspard was the most tolerant genotype under anthesis and post-anthesis drought.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Material
- Alvd//Aldan/Ias58*2/3/Gasparde5
- Outcome
- most tolerant genotypee5
- Qualifier
- under anthesis and post-anthesis drought stress conditionse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological-based Selection Criteria for Terminal Drought in Wheat ( Triticum aestivum L.)”
e5“the improved line Alvd//Aldan/Ias58*2/3/Gaspard was identified as the most tolerant genotype under anthesis and post-anthesis drought stress conditions”
Claim · model-written summary
The same line had the highest remobilization, remobilization efficiency and pre-anthesis photo-assimilate contribution under drought stress.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Material
- Alvd//Aldan/Ias58*2/3/Gasparde5
- Outcome
- remobilization, efficiency of remobilization, and preanthesis photo-assimilate contribution to grain fillinge6
- Qualifier
- under drought stress conditionse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological-based Selection Criteria for Terminal Drought in Wheat ( Triticum aestivum L.)”
e5“the improved line Alvd//Aldan/Ias58*2/3/Gaspard was identified as the most tolerant genotype under anthesis and post-anthesis drought stress conditions”
e6“It also had the highest remobilization, efficiency of remobilization, and preanthesis photo-assimilate contribution to grain filling under drought stress conditions”
The same questions in other papers
drought · yield · Triticum aestivum (wheat)Positive and negative results
94 papers in the same direction as this paper · 537 in the opposite direction
- negative
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See all 632 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.