Abstract
The unpredictably changing climatic conditions, especially high temperatures, are putting a continuous threat to sustainable cotton production. The current study was designed to investigate the impact of heat stress on several morpho-physiological, biochemical, and fibre quality-related traits. The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments. Further analysis of pooled data unveiled that heat stress had a detrimental impact on all studied plant traits. Severe reduction in plant height, nodes per plant, sympodial branches per plant, number of bolls per plant, ginning out-turn, and staple length were recorded under heat stress. A significant reduction in net photosynthetic rate (Pn) up to 28.6 % was observed in cotton genotype BH-200 (24.7 to 19.2 µmole m−2 s−1). The accumulation of hydrogen peroxide (H2O2) was increased from 7.1 % in BH-306 to 28.7 % in BH-200 under heat stress due to the incidence of oxidative stress. A substantial increase in the accumulation of antioxidants i.e., catalase (65 %–74 %), peroxidase (54 %–169 %), and superoxide dismutase (52 %–98 %) was seen under high-temperature stress conditions. The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions. However, a negative but statistically significant correlation of seed cotton yield with ginning out turn (r = −0.466*), staple length (r = −0.898**), hydrogen peroxide (r = −0.955**) and catalase (r = −0.904**) was also observed. The overall results unveiled that cotton genotype BH-232 has a comparatively higher heat tolerance than other contesting genotypes while BH-306 showed the highest susceptibility to heat stress. Hence, BH-232 could be recommended after its approval for general cultivation in heat-prone areas of Pakistan.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 20
Claim · model-written summary
Heat stress had a detrimental impact on all studied plant traits of upland cotton, with significant variation among genotypes and stress treatments.
- Taxon
- upland cottone2
- Treatment
- heat stresse1
- Outcome
- all studied plant traitse1
- Direction
- detrimental impacte1
- Qualifier
- significant variationse2
Not reportedComparator
Verbatim
e1“heat stress had a detrimental impact on all studied plant traits”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Under heat stress, plant height, nodes per plant and sympodial branches per plant showed severe reductions in upland cotton.
- Taxon
- upland cottone2
- Treatment
- heat stresse1
- Outcome
- plant height, nodes per plant, sympodial branches per plante1
- Direction
- Severe reductione1
Not reportedComparator
Verbatim
e1“Severe reduction in plant height, nodes per plant, sympodial branches per plant, number of bolls per plant, ginning out-turn, and staple length were recorded under heat stress”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Under heat stress, number of bolls per plant, ginning out-turn and staple length showed severe reductions in upland cotton.
- Taxon
- upland cottone2
- Treatment
- heat stresse1
- Outcome
- number of bolls per plant, ginning out-turn, and staple lengthe1
- Direction
- Severe reductione1
Not reportedComparator
Verbatim
e1“Severe reduction in plant height, nodes per plant, sympodial branches per plant, number of bolls per plant, ginning out-turn, and staple length were recorded under heat stress”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Under heat stress, net photosynthetic rate of cotton genotype BH-200 was significantly reduced by 28.6 %.
- Taxon
- cotton
Gossypium hirsutume2 - Material
- BH-200e2
- Treatment
- heat stresse1
- Outcome
- net photosynthetic rate (Pn)e2
- Direction
- reductione2
- Value
- 28.6 %e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A significant reduction in net photosynthetic rate (Pn) up to 28.6 % was observed in cotton genotype BH-200”
e1“Severe reduction in plant height, nodes per plant, sympodial branches per plant, number of bolls per plant, ginning out-turn, and staple length were recorded under heat stress”
Claim · model-written summary
Under heat stress, hydrogen peroxide accumulation rose from 7.1 % in genotype BH-306.
- Taxon
- upland cottone2
- Material
- BH-306e5
- Treatment
- heat stresse5
- Outcome
- accumulation of hydrogen peroxide (H2O2)e5
- Direction
- increasede5
- Value
- 7.1 %e5
Not reportedComparator
Verbatim
e5“The accumulation of hydrogen peroxide (H2O2) was increased from 7.1 % in BH-306 to 28.7 % in BH-200 under heat stress”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Under heat stress, hydrogen peroxide accumulation rose to 28.7 % in genotype BH-200.
- Taxon
- upland cottone2
- Material
- BH-200e5
- Treatment
- heat stresse5
- Outcome
- accumulation of hydrogen peroxide (H2O2)e5
- Direction
- increasede5
- Value
- 28.7 %e5
Not reportedComparator
Verbatim
e5“The accumulation of hydrogen peroxide (H2O2) was increased from 7.1 % in BH-306 to 28.7 % in BH-200 under heat stress”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Under high-temperature stress, catalase activity increased by 65 %–74 %.
- Taxon
- upland cottone2
- Treatment
- high-temperature stress conditionse6
- Outcome
- catalasee6
- Direction
- increasee6
- Value
- 65 %–74 %e6
Not reportedComparator
Verbatim
e6“A substantial increase in the accumulation of antioxidants i.e., catalase (65 %–74 %), peroxidase (54 %–169 %), and superoxide dismutase (52 %–98 %) was seen under high-temperature stress conditions”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Under high-temperature stress, peroxidase activity increased by 54 %–169 %.
- Taxon
- upland cottone2
- Treatment
- high-temperature stress conditionse6
- Outcome
- peroxidasee6
- Direction
- increasee6
- Value
- 54 %–169 %e6
Not reportedComparator
Verbatim
e6“A substantial increase in the accumulation of antioxidants i.e., catalase (65 %–74 %), peroxidase (54 %–169 %), and superoxide dismutase (52 %–98 %) was seen under high-temperature stress conditions”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Under high-temperature stress, superoxide dismutase activity increased by 52 %–98 %.
- Taxon
- upland cottone2
- Treatment
- high-temperature stress conditionse6
- Outcome
- superoxide dismutasee6
- Direction
- increasee6
- Value
- 52 %–98 %e6
Not reportedComparator
Verbatim
e6“A substantial increase in the accumulation of antioxidants i.e., catalase (65 %–74 %), peroxidase (54 %–169 %), and superoxide dismutase (52 %–98 %) was seen under high-temperature stress conditions”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Seed cotton yield is significantly positively correlated with nodes per plant under heat stress.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- heat stress conditionse1
- Outcome
- seed cotton yielde1
- Direction
- significantly positivee1
- Value
- r = 0.432*e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Seed cotton yield is significantly positively correlated with net photosynthetic rate under heat stress.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- heat stress conditionse1
- Outcome
- seed cotton yielde1
- Direction
- significantly positivee1
- Value
- r = 0.829**e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Seed cotton yield is significantly positively correlated with peroxidase under heat stress.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- heat stress conditionse1
- Gene
- peroxidasee1
- Outcome
- seed cotton yielde1
- Direction
- significantly positivee1
- Value
- r = 0.974**e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Seed cotton yield is significantly positively correlated with superoxide dismutase under heat stress.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- heat stress conditionse1
- Gene
- superoxide dismutasee1
- Outcome
- seed cotton yielde1
- Direction
- significantly positivee1
- Value
- r = 0.868**e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Seed cotton yield is significantly negatively correlated with ginning out-turn.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- heat stress conditionse1
- Outcome
- seed cotton yielde2
- Direction
- negativee2
- Value
- r = −0.466*e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However, a negative but statistically significant correlation of seed cotton yield with ginning out turn (r = −0.466*), staple length (r = −0.898**), hydrogen peroxide (r = −0.955**) and catalase (r = −0.904**) was also observed”
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Seed cotton yield is significantly negatively correlated with staple length.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- heat stress conditionse1
- Outcome
- seed cotton yielde2
- Direction
- negativee2
- Value
- r = −0.898**e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However, a negative but statistically significant correlation of seed cotton yield with ginning out turn (r = −0.466*), staple length (r = −0.898**), hydrogen peroxide (r = −0.955**) and catalase (r = −0.904**) was also observed”
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Seed cotton yield is significantly negatively correlated with hydrogen peroxide.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- heat stress conditionse1
- Compound
- hydrogen peroxidee2
- Outcome
- seed cotton yielde2
- Direction
- negativee2
- Value
- r = −0.955**e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However, a negative but statistically significant correlation of seed cotton yield with ginning out turn (r = −0.466*), staple length (r = −0.898**), hydrogen peroxide (r = −0.955**) and catalase (r = −0.904**) was also observed”
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Seed cotton yield is significantly negatively correlated with catalase.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- heat stress conditionse1
- Gene
- catalasee2
- Outcome
- seed cotton yielde2
- Direction
- negativee2
- Value
- r = −0.904**e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However, a negative but statistically significant correlation of seed cotton yield with ginning out turn (r = −0.466*), staple length (r = −0.898**), hydrogen peroxide (r = −0.955**) and catalase (r = −0.904**) was also observed”
e1“The correlation coefficient analysis unveiled a significantly positive correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**), peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions”
Claim · model-written summary
Cotton genotype BH-232 has a comparatively higher heat tolerance than other tested genotypes.
- Taxon
- cottonGossypium hirsutume1
- Material
- BH-232e1
- Outcome
- heat tolerancee1
- Direction
- highere1
- Comparator
- other contesting genotypese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cotton genotype BH-232 has a comparatively higher heat tolerance than other contesting genotypes”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
Claim · model-written summary
Cotton genotype BH-306 showed the highest susceptibility to heat stress.
- Taxon
- cottonGossypium hirsutume1
- Material
- BH-306e2
- Treatment
- heat stresse2
- Outcome
- susceptibilitye2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cotton genotype BH-232 has a comparatively higher heat tolerance than other contesting genotypes”
e2“BH-306 showed the highest susceptibility to heat stress”
Claim · model-written summary
Genotype BH-232 should be recommended for general cultivation in heat-prone areas of Pakistan after official approval.
Verbatim
e1“Hence, BH-232 could be recommended after its approval for general cultivation in heat-prone areas of Pakistan”
e2“The results revealed the presence of significant variations in agro-morphological, physio-chemical and staple length-related parameters for upland cotton genotypes and stress treatments”
The same questions in other papers
heat · quality: grain · Gossypium hirsutum (cotton)Results differ
5 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
4 papers more in this group
See all 8 papers →heat · physiology: antioxidant enzymes · Gossypium hirsutum (cotton)Results differ
6 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
6 papers more in this group
See all 10 papers →heat · physiology: oxidative · Gossypium hirsutum (cotton)Results differ
10 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- no effect
9 papers more in this group
See all 13 papers →heat · physiology: photosynthesis · Gossypium hirsutum (cotton)Results differ
12 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
11 papers more in this group
See all 15 papers →heat · growth · Gossypium hirsutum (cotton)Positive and negative results
12 papers in the same direction as this paper · 4 in the opposite direction
- negative
- positive
- positive
13 papers more in this group
See all 17 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.