Paper · 2026 · Journal of Agronomy and Crop Science

Melatonin Reduces the Effects of Waterlogging Stress, Enhancing Sesame ( Sesamum indicum L.) Seedling Survival and Reproductive Success

M. Djanaguiraman; R. Swathi; R. Pugazhendhi; et al.

16
claims
30
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

ABSTRACT Extreme rainfall events have increased in recent decades because of global warming, and sesame ( Sesamum indicum L.) is sensitive to waterlogging stress. The study aimed to (i) identify traits associated with waterlogging stress tolerance during the seedling and flowering stages of sesame and (ii) quantify the effects of foliar spray of 100 μM melatonin on increasing the seed yield of waterlogged stressed plants. Experiments were conducted to quantify the effects of waterlogging stress during the seedling and flowering stages using 35 genotypes. The third and fourth experiments were conducted to mitigate waterlogging stress by foliar spraying with 100 μM melatonin. Compared to the irrigated control, waterlogging stress during the seedling stage decreased the stay‐green score (72%) and survival percentage of the seedlings (61.4%). Similarly, at the flowering stage, waterlogging stress decreased the pod‐set percentage (68%), the number of seeds per capsule (29%) and seed yield per plant (16%). A strong correlation existed between the stay‐green score and seedling survival percentage ( r 2 = 0.75). Similarly, a strong correlation existed between pod‐set percentage and seed yield plant −1 ( r 2 = 0.64). Among the genotypes, VRI 1 and NIC 8252 were identified as stress‐tolerant, and Co‐1 and SI‐1771 were susceptible. Under waterlogging stress, foliar spray of melatonin during seedling and flowering stages increased the number of seedling survival m −2 (65%) and pod‐set percentage (66%), respectively, over the unsprayed control, resulting in an increased seed yield. Overall, sesame seed yield under waterlogging stress can be improved by developing lines with high pod‐set percentage and/or by foliar application of 100 μM melatonin.

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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 16

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seedling waterlogging reduced stay-green score by 72%.

Organ / stage
seedling stagee0
Treatment
waterlogging stresse0
Outcome
stay‐green scoree0
Direction
decreasede0
Value
72%e0
Comparator
irrigated controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared to the irrigated control, waterlogging stress during the seedling stage decreased the stay‐green score (72%) and survival percentage of the seedlings (61.4%).”

✓ located verbatim in the source · abstract, characters 683–850 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seedling waterlogging reduced survival by 61.4%.

Treatment
waterlogging stresse0
Outcome
survival percentage of the seedlingse0
Direction
decreasede0
Value
61.4%e0
Comparator
irrigated controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared to the irrigated control, waterlogging stress during the seedling stage decreased the stay‐green score (72%) and survival percentage of the seedlings (61.4%).”

✓ located verbatim in the source · abstract, characters 683–850 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Flowering-stage waterlogging reduced pod set by 68%.

Treatment
waterlogging stresse0
Outcome
pod‐set percentagee0
Direction
decreasede0
Value
68%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“at the flowering stage, waterlogging stress decreased the pod‐set percentage (68%), the number of seeds per capsule (29%) and seed yield per plant (16%).”

✓ located verbatim in the source · abstract, characters 862–1015 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Flowering-stage waterlogging reduced seeds per capsule by 29%.

Treatment
waterlogging stresse0
Outcome
number of seeds per capsulee0
Direction
decreasede0
Value
29%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“at the flowering stage, waterlogging stress decreased the pod‐set percentage (68%), the number of seeds per capsule (29%) and seed yield per plant (16%).”

✓ located verbatim in the source · abstract, characters 862–1015 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Flowering-stage waterlogging reduced seed yield per plant by 16%.

Treatment
waterlogging stresse0
Outcome
seed yield per plante0
Direction
decreasede0
Value
16%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“at the flowering stage, waterlogging stress decreased the pod‐set percentage (68%), the number of seeds per capsule (29%) and seed yield per plant (16%).”

✓ located verbatim in the source · abstract, characters 862–1015 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Stay-green score correlated strongly with seedling survival.

Organ / stage
seedlinge0
Outcome
seedling survival percentagee0
Direction
strong correlatione0
Value
r 2 = 0.75e0
Qualifier
stay‐green scoree0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“A strong correlation existed between the stay‐green score and seedling survival percentage ( r 2 = 0.75).”

✓ located verbatim in the source · abstract, characters 1016–1121 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Pod-set percentage correlated strongly with seed yield.

Organ / stage
pod‐sete0
Outcome
seed yield plant −1e0
Direction
strong correlatione0
Value
r 2 = 0.64e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a strong correlation existed between pod‐set percentage and seed yield plant −1 ( r 2 = 0.64).”

✓ located verbatim in the source · abstract, characters 1133–1227 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

VRI 1 was identified as waterlogging tolerant.

Material
VRI 1e0
Outcome
stress‐tolerante0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“VRI 1 and NIC 8252 were identified as stress‐tolerant”

✓ located verbatim in the source · abstract, characters 1249–1302 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

NIC 8252 was identified as waterlogging tolerant.

Material
NIC 8252e0
Outcome
stress‐tolerante0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“VRI 1 and NIC 8252 were identified as stress‐tolerant”

✓ located verbatim in the source · abstract, characters 1249–1302 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Co-1 was susceptible.

Material
Co‐1e0
Outcome
susceptiblee0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Co‐1 and SI‐1771 were susceptible”

✓ located verbatim in the source · abstract, characters 1308–1341 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

SI-1771 was susceptible.

Material
SI‐1771e0
Outcome
susceptiblee0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Co‐1 and SI‐1771 were susceptible”

✓ located verbatim in the source · abstract, characters 1308–1341 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Melatonin spraying increased seedling survival per square metre by 65% under waterlogging.

Treatment
foliar spray of melatonine0
Outcome
number of seedling survival m −2e0
Direction
increasede0
Value
65%e0
Qualifier
Under waterlogging stresse0
Comparator
unsprayed controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under waterlogging stress, foliar spray of melatonin during seedling and flowering stages increased the number of seedling survival m −2 (65%) and pod‐set percentage (66%), respectively, over the unsprayed control, resulting in an increased seed yield.”

✓ located verbatim in the source · abstract, characters 1343–1595 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Melatonin spraying increased pod set by 66% under waterlogging.

Treatment
foliar spray of melatonine0
Outcome
pod‐set percentagee0
Direction
increasede0
Value
66%e0
Comparator
unsprayed controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under waterlogging stress, foliar spray of melatonin during seedling and flowering stages increased the number of seedling survival m −2 (65%) and pod‐set percentage (66%), respectively, over the unsprayed control, resulting in an increased seed yield.”

✓ located verbatim in the source · abstract, characters 1343–1595 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Melatonin spraying increased seed yield under waterlogging.

Treatment
foliar spray of melatonine0
Outcome
seed yielde0
Direction
increasede0
Comparator
unsprayed controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under waterlogging stress, foliar spray of melatonin during seedling and flowering stages increased the number of seedling survival m −2 (65%) and pod‐set percentage (66%), respectively, over the unsprayed control, resulting in an increased seed yield.”

✓ located verbatim in the source · abstract, characters 1343–1595 · show in text ↑
t0

“sesame ( Sesamum indicum L.)”

✓ located after whitespace/quote normalisation · title, characters 64–92 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend breeding for high pod set to improve yield under waterlogging.

Outcome
developing lines with high pod‐set percentagee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“sesame seed yield under waterlogging stress can be improved by developing lines with high pod‐set percentage”

✓ located verbatim in the source · abstract, characters 1605–1713 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend foliar application of melatonin to improve yield under waterlogging.

Outcome
foliar application of 100 μM melatonine0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sesamum indicum
Sesamum indicum · TaxonFranz Xaver · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“sesame seed yield under waterlogging stress can be improved by developing lines with high pod‐set percentage and/or by foliar application of 100 μM melatonin”

✓ located verbatim in the source · abstract, characters 1605–1762 · show in text ↑

melatonin · growth · Sesamum indicum (sesame)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

application · growth · Sesamum indicum (sesame)Positive and negative results

27 papers: 25 positive, 2 negative or no effect

24 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. no effect
  3. positive

23 papers more in this group

See all 27 papers →

application · yield · Sesamum indicum (sesame)Positive and negative results

92 papers: 89 positive, 3 negative or no effect

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

  1. negative
  2. no effect
  3. negative

88 papers more in this group

See all 92 papers →

flooding · yield · Sesamum indicum (sesame)Results agree

3 papers: 0 positive, 3 negative or no effect

2 papers in the same direction as this paper

  1. negative
  2. negative
See all 3 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.