Abstract
Four sunflower (Tarsan, Sanbro, TR-3080 and DKF-2525) and four safflower (Remzibey, Dincer, Balci and TRE-ASL09/14) genotypes were tested in a greenhouse, sheltered from rain, under well-watered (60% FC) and drought stress (30% FC) irrigation field capacity to determine the effect of drought stress on the leaf temperature and compare the reaction responses against drought stress in terms of leaf temperature between sunflower and safflower. The effect was particularly apparent under conditions of drought stress indicating that all sunflower and safflower genotype responses gradually increase their leaf temperature under drought stress. The results of the study showed that leaf temperature of sunflower and safflower was lower than ambient temperature in both conditions. But the leaf temperature of sunflower and safflower were closer to ambient temperature under drought stress than under well-watered conditions, probably because of decreased transpiration cooling. It can also be exposed in this study that even though the leaf temperatures of safflower were generally higher than the leaf temperature of sunflower under drought stress, in general the safflower leaf temperatures in ambient conditions were higher than those of sunflower. It was found that statistical differences of the leaf and stem temperature measured by an infrared thermometer provide practically a rapid means of assessing plant water status and observe the performance of plant response to the effect of drought stress. Especially, the results revealed that the leaf temperatures of sunflower and safflower genotypes could be altered by not only drought stress but also the changing of ambient temperature and genetically property of them during the day. Therefore, to measuring of leaf temperatures should be done very carefully and should be measured on more leaves.
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Claims 12
Claim · model-written summary
Sunflower leaf temperature increased under drought stress.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- drought stress (30% FC)e1
- Outcome
- leaf temperaturee0
- Direction
- increasee0
- Comparator
- well-watered (60% FC)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all sunflower and safflower genotype responses gradually increase their leaf temperature under drought stress”
e1“well-watered (60% FC) and drought stress (30% FC)”
Claim · model-written summary
Safflower leaf temperature increased under drought stress.
- Taxon
- safflower
Carthamus tinctoriuse0 - Treatment
- drought stress (30% FC)e1
- Outcome
- leaf temperaturee0
- Direction
- increasee0
- Comparator
- well-watered (60% FC)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all sunflower and safflower genotype responses gradually increase their leaf temperature under drought stress”
e1“well-watered (60% FC) and drought stress (30% FC)”
Claim · model-written summary
Sunflower leaf temperature was lower than ambient temperature under both conditions.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- leaf temperaturee0
- Direction
- lowere0
- Comparator
- ambient temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf temperature of sunflower and safflower was lower than ambient temperature in both conditions”
Claim · model-written summary
Safflower leaf temperature was lower than ambient temperature under both conditions.
- Taxon
- safflowerCarthamus tinctoriuse0
- Outcome
- leaf temperaturee0
- Direction
- lowere0
- Comparator
- ambient temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf temperature of sunflower and safflower was lower than ambient temperature in both conditions”
Claim · model-written summary
Sunflower leaf temperature was closer to ambient temperature under drought than under well-watered conditions.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- drought stresse0
- Outcome
- leaf temperaturee0
- Direction
- closere0
- Comparator
- well-watered conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf temperature of sunflower and safflower were closer to ambient temperature under drought stress than under well-watered conditions”
Claim · model-written summary
Safflower leaf temperature was closer to ambient temperature under drought than under well-watered conditions.
- Taxon
- safflowerCarthamus tinctoriuse0
- Treatment
- drought stresse0
- Outcome
- leaf temperaturee0
- Direction
- closere0
- Comparator
- well-watered conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf temperature of sunflower and safflower were closer to ambient temperature under drought stress than under well-watered conditions”
Claim · model-written summary
Safflower leaf temperatures were generally higher than sunflower under drought stress.
- Taxon
- safflowerCarthamus tinctoriuse0
- Outcome
- leaf temperaturese0
- Direction
- highere0
- Comparator
- sunflowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf temperatures of safflower were generally higher than the leaf temperature of sunflower under drought stress”
Claim · model-written summary
Safflower leaf temperatures in ambient conditions were generally higher than sunflower.
- Taxon
- safflowerCarthamus tinctoriuse0
- Outcome
- leaf temperaturese0
- Direction
- highere0
- Comparator
- sunflowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“safflower leaf temperatures in ambient conditions were higher than those of sunflower”
Claim · model-written summary
Infrared measurements of leaf and stem temperature provided a rapid means of assessing water status and drought response.
- Taxon
- sunflower and safflowerCarthamus tinctoriusHelianthus annuust0
- Outcome
- assessing plant water statuse0
- Value
- rapide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower and safflower”
e0“statistical differences of the leaf and stem temperature measured by an infrared thermometer provide practically a rapid means of assessing plant water status and observe the performance of plant response to the effect of drought stress”
Claim · model-written summary
Sunflower leaf temperature varied with ambient temperature and genotype during the day.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- leaf temperaturese0
- Setting
- ambient temperaturee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf temperatures of sunflower and safflower genotypes could be altered by not only drought stress but also the changing of ambient temperature and genetically property of them during the day”
Claim · model-written summary
Safflower leaf temperature varied with ambient temperature and genotype during the day.
- Taxon
- safflowerCarthamus tinctoriuse0
- Outcome
- leaf temperaturese0
- Setting
- ambient temperaturee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf temperatures of sunflower and safflower genotypes could be altered by not only drought stress but also the changing of ambient temperature and genetically property of them during the day”
Claim · model-written summary
The authors recommend careful leaf-temperature measurement using more leaves.
- Taxon
- sunflower and safflowerCarthamus tinctoriusHelianthus annuust0
- Outcome
- measured on more leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower and safflower”
e0“measuring of leaf temperatures should be done very carefully and should be measured on more leaves”
The same questions in other papers
drought · soil: physics · Helianthus annuus (common sunflower)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
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.