Abstract
Chlormequat chloride (CCC) as one of the most important growth retardants has been used for manipulation of growth and yield of cereal crops; however, the effect of CCC has not yet been well understood under drought stress conditions. Therefore, one greenhouse and a field experiment were conducted to examine the effects of CCC on yield and yield components of wheat in drought conditions at College of Agriculture, Shiraz University during 2012-2014 growing seasons. The treatments in greenhouse were application and no-application of CCC, wheat cultivar (Marvdasht, Shiraz and Chamran) and irrigation regimes (100%, 75% and 50% of FC); while the treatments in filed were different CCC concentrations (0, 3 and 5 g L-1) and drought stress levels (no-, light-, moderate- and severe-drought). The results showed that under both greenhouse and field conditions, drought stress at different levels decreased yield and yield components of wheat cultivars. However, CCC improved drought tolerance in wheat with increasing yield and yield components; under field conditions, positive effects of CCC were enhanced with increasing its concentration up to 5 g L-1. The positive effect of CCC was greater under control and light stress compared to under severe stress conditions. In the greenhouse study where Marvdasht, Shiraz, and Chamran cultivars were evaluated, Chamran cultivar produced the highest grain yield under both normal and drought conditions; although Shiraz cultivar was found more responsive to CCC. Overall; drought stress reduced growth and grain yield of wheat crop; however, CCC could compensate, at least in part (i.e. 30% to 60%) for the latter reductions.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
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 10
Claim · model-written summary
Drought decreased wheat yield under greenhouse and field conditions.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- drought stress at different levelse0
- Outcome
- yielde0
- Direction
- decreasede0
- Setting
- greenhouse and field conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under both greenhouse and field conditions, drought stress at different levels decreased yield and yield components of wheat cultivars”
Claim · model-written summary
Drought decreased wheat yield components under greenhouse and field conditions.
- Taxon
- wheatTriticum aestivume0
- Treatment
- drought stress at different levelse0
- Outcome
- yield componentse0
- Direction
- decreasede0
- Setting
- greenhouse and field conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under both greenhouse and field conditions, drought stress at different levels decreased yield and yield components of wheat cultivars”
Claim · model-written summary
CCC increased wheat yield under drought stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- CCCe0
- Outcome
- yielde0
- Direction
- increasinge0
- Qualifier
- drought tolerancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC improved drought tolerance in wheat with increasing yield and yield components”
Claim · model-written summary
CCC increased wheat yield components under drought stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- CCCe0
- Outcome
- yield componentse0
- Direction
- increasinge0
- Qualifier
- drought tolerancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC improved drought tolerance in wheat with increasing yield and yield components”
Claim · model-written summary
CCC benefits increased with concentration up to 5 g L-1 in the field.
- Taxon
- wheatTriticum aestivume1
- Treatment
- CCCe0
- Outcome
- positive effects of CCCe0
- Direction
- enhancede0
- Value
- 5 g L-1e0
- Setting
- field conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under field conditions, positive effects of CCC were enhanced with increasing its concentration up to 5 g L-1”
e1“effects of CCC on yield and yield components of wheat in drought conditions at College of Agriculture”
Claim · model-written summary
CCC benefit was greater under control and light stress than severe stress.
- Taxon
- wheatTriticum aestivume1
- Treatment
- CCCe0
- Outcome
- positive effect of CCCe0
- Direction
- greatere0
- Qualifier
- control and light stresse0
- Comparator
- severe stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The positive effect of CCC was greater under control and light stress compared to under severe stress conditions”
e1“effects of CCC on yield and yield components of wheat in drought conditions at College of Agriculture”
Claim · model-written summary
Chamran produced the highest grain yield under normal and drought conditions among three cultivars.
- Taxon
- wheatTriticum aestivume2
- Material
- Chamran cultivare0
- Outcome
- grain yielde0
- Direction
- higheste0
- Qualifier
- normal and drought conditionse0
- Comparator
- Marvdasht, Shiraz, and Chamran cultivarse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chamran cultivar produced the highest grain yield under both normal and drought conditions”
e1“Marvdasht, Shiraz, and Chamran cultivars were evaluated”
e2“effects of CCC on yield and yield components of wheat in drought conditions at College of Agriculture”
Claim · model-written summary
Shiraz was more responsive to CCC than the other evaluated cultivars.
- Taxon
- wheatTriticum aestivume2
- Material
- Shiraz cultivare0
- Treatment
- CCCe0
- Outcome
- responsive to CCCe0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shiraz cultivar was found more responsive to CCC”
e1“Marvdasht, Shiraz, and Chamran cultivars were evaluated”
e2“effects of CCC on yield and yield components of wheat in drought conditions at College of Agriculture”
Claim · model-written summary
CCC partly compensated for drought-related grain yield reduction by 30% to 60%.
- Taxon
- wheatTriticum aestivume0
- Treatment
- CCCe0
- Outcome
- grain yielde0
- Direction
- compensatee0
- Value
- 30% to 60%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress reduced growth and grain yield of wheat crop; however, CCC could compensate, at least in part (i.e. 30% to 60%) for the latter reductions”
Claim · model-written summary
Drought reduced wheat growth.
- Taxon
- wheatTriticum aestivume0
- Treatment
- drought stresse0
- Outcome
- growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress reduced growth and grain yield of wheat crop”
The same questions in other papers
chlormequat chloride · yield · Triticum aestivum (wheat)Results differ
52 papers in the same direction as this paper · 18 in the opposite direction
- negative
- positive
- no effect
67 papers more in this group
See all 71 papers →drought · growth · Triticum aestivum (wheat)Positive and negative results
344 papers in the same direction as this paper · 86 in the opposite direction
- negative
- negative
- positive
427 papers more in this group
See all 431 papers →drought · yield · Triticum aestivum (wheat)Positive and negative results
536 papers in the same direction as this paper · 95 in the opposite direction
- positive
- positive
- positive
628 papers more in this group
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.