Abstract
Abstract Heat stress at reproductive stages of cotton crop is the main cause for instability in yield than other abiotic stresses of crops. An experiment was conducted to observe the impacts of heat stress at squaring and flowering stages of cotton and potential of exogenously applied ascorbic acid to alleviate this stress. The experiment was planted for two consecutive years, that is 2013 and 2014, in randomized complete block design with split plot arrangement having three replications. Treatments were comprised of heat stress in main plots, viz. H 0 = no heat imposition; H 1 = heat imposition at square initiation; H 2 = heat imposition at flower initiation and foliar‐applied ascorbic acid in subplots, viz. A 0 = control or water spray; A 1 = 20 mg/L; A 2 = 40 mg/L; and A 3 = 60 mg/L. Results showed that heat stress badly affected plant water relations (relative water contents and osmotic potential), total chlorophyll contents and activities of antioxidant enzymes that led to a corresponding decrease in seed cotton yield. Foliar application of ascorbic acid (40–60 mg/L) ameliorated adverse effects of heat and thus helped the crop to improve its water relations, stay green and antioxidant enzymes resulting into better crop yield.
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Claims 8
Claim · model-written summary
Heat stress adversely affected plant water relations (relative water contents and osmotic potential).
- Taxon
- Bt cottont0
- Treatment
- heat stresse1
- Outcome
- plant water relations (relative water contents and osmotic potential)e1
Not reportedComparatorDirection
Verbatim
t0“Bt cotton”
e1“heat stress badly affected plant water relations (relative water contents and osmotic potential), total chlorophyll contents and activities of antioxidant enzymes that led to a corresponding decrease in seed cotton yield.”
Claim · model-written summary
Heat stress adversely affected total chlorophyll contents.
Not reportedComparatorDirection
Verbatim
t0“Bt cotton”
e1“heat stress badly affected plant water relations (relative water contents and osmotic potential), total chlorophyll contents and activities of antioxidant enzymes that led to a corresponding decrease in seed cotton yield.”
Claim · model-written summary
Heat stress adversely affected activities of antioxidant enzymes.
Not reportedComparatorDirection
Verbatim
t0“Bt cotton”
e1“heat stress badly affected plant water relations (relative water contents and osmotic potential), total chlorophyll contents and activities of antioxidant enzymes that led to a corresponding decrease in seed cotton yield.”
Claim · model-written summary
Heat stress adversely affected seed cotton yield.
Not reportedComparator
Verbatim
t0“Bt cotton”
e1“heat stress badly affected plant water relations (relative water contents and osmotic potential), total chlorophyll contents and activities of antioxidant enzymes that led to a corresponding decrease in seed cotton yield.”
Claim · model-written summary
Foliar ascorbic acid at 40–60 mg/L improved water relations in heat stressed cotton.
- Taxon
- Bt cottont0
- Treatment
- Foliar application of ascorbic acid (40–60 mg/L)e1
- Outcome
- water relationse1
- Direction
- improvee1
- Qualifier
- heate1
Not reportedComparator
Verbatim
t0“Bt cotton”
e1“Foliar application of ascorbic acid (40–60 mg/L) ameliorated adverse effects of heat and thus helped the crop to improve its water relations, stay green and antioxidant enzymes resulting into better crop yield.”
Claim · model-written summary
Foliar ascorbic acid at 40–60 mg/L improved stay green in heat stressed cotton.
- Taxon
- Bt cottont0
- Treatment
- Foliar application of ascorbic acid (40–60 mg/L)e1
- Outcome
- stay greene1
- Direction
- improvee1
- Qualifier
- heate1
Not reportedComparator
Verbatim
t0“Bt cotton”
e1“Foliar application of ascorbic acid (40–60 mg/L) ameliorated adverse effects of heat and thus helped the crop to improve its water relations, stay green and antioxidant enzymes resulting into better crop yield.”
Claim · model-written summary
Foliar ascorbic acid at 40–60 mg/L improved antioxidant enzymes in heat stressed cotton.
- Taxon
- Bt cottont0
- Treatment
- Foliar application of ascorbic acid (40–60 mg/L)e1
- Outcome
- antioxidant enzymese1
- Direction
- improvee1
- Qualifier
- heate1
Not reportedComparator
Verbatim
t0“Bt cotton”
e1“Foliar application of ascorbic acid (40–60 mg/L) ameliorated adverse effects of heat and thus helped the crop to improve its water relations, stay green and antioxidant enzymes resulting into better crop yield.”
Claim · model-written summary
Foliar ascorbic acid at 40–60 mg/L improved crop yield in heat stressed cotton.
- Taxon
- Bt cottont0
- Treatment
- Foliar application of ascorbic acid (40–60 mg/L)e1
- Outcome
- crop yielde1
- Direction
- bettere1
- Qualifier
- heate1
Not reportedComparator
Verbatim
t0“Bt cotton”
e1“Foliar application of ascorbic acid (40–60 mg/L) ameliorated adverse effects of heat and thus helped the crop to improve its water relations, stay green and antioxidant enzymes resulting into better crop yield.”
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See all 8 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.