Paper · 2020 · University of the Future: Re-Imagining Research and Higher Education

Effect of Seagrass Liquid Extracts on Bell Pepper (Capsicum annuum) Under Salt stress Conditions

Noora Saad Al-qahtani; Talaat Ahmed

9
claims
18
verbatim quotes
1
citations
2
research areas
✓
Open access

Abstract

Salinity is considered as major environmental challenge that affects crop growth and productivity. This study investigated the application of Haodule univervis seagrass liquid extract on bell pepper (Capsicum annuum L.) under salt stress conditions. The salinity treatments were applied by irrigating bell pepper plants with 0, 50, 100, 150, and 200 mM/l of NaCl with four replications. The bell pepper plants were divided into two groups: one group was sprayed with seagrass extract, and the other group was sprayed with distilled water. The salt treatment was applied at every 10 days interval for only three treatments, and the bell pepper leaves were sprayed about seven days after the salt treatment. The results showed an increase in relative water content (RWC) of salt stressed bell pepper plants sprayed with seagrass extract from 0- 100 mM of NaCl treatment, while RWC decreased at 150 and 200 mM NaCl treatments compared to the control. This indicates stressed bell pepper plants sprayed with seagrass extract had higher RWC than plants sprayed with water at 0-100 mM NaCl treatments. Chlorophyll concentration was decreased dramatically in plants sprayed with water at 50mM of NaCl level. However, chlorophyll concentration increased slightly in plants sprayed with water at 100 mM NaCl level then start declined gradually at 150 mM and 200mM NaCl level. The plants sprayed with seagrass extract showed an increase in chlorophyll concentration at 100 and 150 mM NaCl treatment compared to the control. Fresh weights of plants sprayed with seagrass extract were declined at 50-150 mM NaCl compared to the control. However, the highest dry weights of plants sprayed with seagrass at 100 mM NaCl treatment. In addition, plants sprayed with water did not show variations in fresh and dry weights.

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Claims 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seagrass-sprayed peppers had increased relative water content at 0 to 100 mM NaCl.

Taxon
bell peppere0
Treatment
sprayed with seagrass extracte0
Interactor
Haodule univervist0other
Outcome
relative water content (RWC)e0
Direction
increasee0
Qualifier
0- 100 mM of NaCle0

Not reportedComparator

Verbatim

e0

“increase in relative water content (RWC) of salt stressed bell pepper plants sprayed with seagrass extract from 0- 100 mM of NaCl treatment”

✓ located verbatim in the source · abstract, characters 728–867 · show in text ↑
t0

“Haodule univervis seagrass liquid extract”

✓ located verbatim in the source · abstract, characters 142–183 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 150 and 200 mM NaCl relative water content decreased versus control.

Taxon
bell peppert0
Treatment
150 and 200 mM NaCl treatmentse0
Outcome
RWCe0
Direction
decreasede0
Comparator
the controle0

Verbatim

e0

“RWC decreased at 150 and 200 mM NaCl treatments compared to the control”

✓ located verbatim in the source · abstract, characters 875–946 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-sprayed peppers lost chlorophyll at 50 mM NaCl.

Taxon
bell peppert0
Treatment
50mM of NaCl levele0
Outcome
Chlorophyll concentratione0
Direction
decreasede0
Qualifier
plants sprayed with watere0

Not reportedComparator

Verbatim

e0

“Chlorophyll concentration was decreased dramatically in plants sprayed with water at 50mM of NaCl level.”

✓ located verbatim in the source · abstract, characters 1096–1200 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Water-sprayed peppers showed slightly increased chlorophyll at 100 mM NaCl.

Taxon
bell peppert0
Treatment
100 mM NaCl levele0
Outcome
chlorophyll concentratione0
Direction
increasede0

Verbatim

e0

“chlorophyll concentration increased slightly in plants sprayed with water at 100 mM NaCl level”

✓ located verbatim in the source · abstract, characters 1210–1304 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-sprayed peppers showed falling chlorophyll at 150 and 200 mM NaCl.

Taxon
bell peppert0
Treatment
150 mM and 200mM NaCl levele0
Outcome
chlorophyll concentratione0
Direction
declinede0

Verbatim

e0

“chlorophyll concentration increased slightly in plants sprayed with water at 100 mM NaCl level then start declined gradually at 150 mM and 200mM NaCl level”

✓ located verbatim in the source · abstract, characters 1210–1365 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seagrass-sprayed peppers increased chlorophyll at 100 and 150 mM NaCl versus control.

Taxon
bell peppert0
Treatment
sprayed with seagrass extracte0
Outcome
chlorophyll concentratione0
Direction
increasee0
Qualifier
100 and 150 mM NaCl treatmente0
Comparator
the controle0

Verbatim

e0

“The plants sprayed with seagrass extract showed an increase in chlorophyll concentration at 100 and 150 mM NaCl treatment compared to the control.”

✓ located verbatim in the source · abstract, characters 1367–1513 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seagrass-sprayed plants lost fresh weight at 50 to 150 mM NaCl.

Taxon
bell peppert0
Treatment
sprayed with seagrass extracte0
Outcome
Fresh weightse0
Direction
declinede0
Qualifier
50-150 mM NaCle0
Comparator
the controle0

Verbatim

e0

“Fresh weights of plants sprayed with seagrass extract were declined at 50-150 mM NaCl compared to the control.”

✓ located verbatim in the source · abstract, characters 1514–1624 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Seagrass-sprayed plants had their highest dry weight at 100 mM NaCl.

Taxon
bell peppert0
Treatment
100 mM NaCl treatmente0
Outcome
dry weightse0
Direction
higheste0

Verbatim

e0

“the highest dry weights of plants sprayed with seagrass at 100 mM NaCl treatment”

✓ located verbatim in the source · abstract, characters 1634–1714 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Water-sprayed plants showed no fresh or dry weight variation.

Taxon
bell peppert0
Treatment
sprayed with watere0
Outcome
fresh and dry weightse0
Direction
did not show variationse0

Verbatim

e0

“plants sprayed with water did not show variations in fresh and dry weights”

✓ located verbatim in the source · abstract, characters 1729–1803 · show in text ↑
t0

“bell pepper”

✓ located after whitespace/quote normalisation · title, characters 38–49 · show in text ↑

sodium chloride · physiology: water · Capsicum annuum (sweet pepper)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

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sodium chloride · physiology: pigments · Capsicum annuum (sweet pepper)Results agree

7 papers: 0 positive, 7 negative or no effect

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application · physiology: water · Capsicum annuum (sweet pepper)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

3 papers in the same direction as this paper · 1 in the opposite direction

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botanical · growth · Capsicum annuum (sweet pepper)Positive and negative results

34 papers: 24 positive, 10 negative or no effect

9 papers in the same direction as this paper · 24 in the opposite direction

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application · growth · Capsicum annuum (sweet pepper)Positive and negative results

49 papers: 45 positive, 4 negative or no effect

3 papers in the same direction as this paper · 45 in the opposite direction

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botanical · physiology: pigments · Capsicum annuum (sweet pepper)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
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application · physiology: pigments · Capsicum annuum (sweet pepper)Results agree

10 papers: 10 positive, 0 negative or no effect

9 papers in the same direction as this paper

  1. positive
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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.