Paper · 2021 · AL-MUKHTAR JOURNAL OF SCIENCES

Effect of Aqueous Extract of some Windbreak Tree Leaves on Seed Germina-tion and Seedling Growth of Squash

Sami A. Alasheebi; Idress A. Al Gehani; Taher M. Mohammed

10
claims
20
verbatim quotes
0
citations
1
research areas
✓
Open access · cc-by-nc

Abstract

The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth. A group of squash seeds was sown in pots and irrigated with aqueous extract concentrations until the germination stage, while another group of seeds was maintained for three weeks under the same treatments until the seedling stage. Treating seeds with aqueous extract of Acacia resulted in a significant decrease in the percentage of germination (GP) and the germination rate (GR) of the seeds. The aqueous extract of Eucalyptus also led to a slight decrease in the GR, while no effect was observed when the aqueous extract of Casuarina was used. Treatment of seedling, on the other hand, with an aqueous extract of all windbreak types decreased all of the seedling growth parameters, fresh and dry weight (FW and DW), water content (WC), length of petioles (LP), number of buds (NB) and number of leaves (NL). The three windbreak trees induced an allelopathic effect on squash seedling growth in particular, more than the squash seed germination, but at different degrees. Acacia extract resulted in the highest effect, while Eucalyptus and Casurina resulted in intermediate and low inhibitory effects respectively. In all three windbreaks, the inhibitory effect of the extract on the seed germination and seedling growth increased as the extract concentration increased from 0 to 100 g.L-1.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. 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 10

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Acacia leaf aqueous extract significantly decreased squash seed germination percentage and germination rate.

Taxon
squashe0
Organ / stage
seedse2
Treatment
aqueous extract of Acaciae2
Outcome
percentage of germination (GP) and the germination rate (GR)e2
Direction
decreasee2
Comparator
0e0

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e2

“Treating seeds with aqueous extract of Acacia resulted in a significant decrease in the percentage of germination (GP) and the germination rate (GR) of the seeds”

✓ located verbatim in the source · abstract, characters 469–630 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Eucalyptus leaf aqueous extract slightly decreased squash germination rate.

Taxon
squashe0
Treatment
aqueous extract of Eucalyptuse3
Outcome
GRe3
Direction
slight decreasee3
Comparator
0e0

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e3

“The aqueous extract of Eucalyptus also led to a slight decrease in the GR, while no effect was observed when the aqueous extract of Casuarina was used”

✓ located verbatim in the source · abstract, characters 632–782 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Casuarina leaf aqueous extract had no effect on squash seed germination.

Taxon
squashe0
Treatment
aqueous extract of Casuarinae3
Outcome
seed germinatione0
Direction
no effecte3
Comparator
0e0

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e3

“The aqueous extract of Eucalyptus also led to a slight decrease in the GR, while no effect was observed when the aqueous extract of Casuarina was used”

✓ located verbatim in the source · abstract, characters 632–782 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Aqueous extracts of all windbreak types decreased squash seedling fresh weight, dry weight and water content.

Taxon
squashe0
Treatment
aqueous extract of all windbreak typese4
Outcome
fresh and dry weight (FW and DW), water content (WC)e4
Direction
decreasede4
Comparator
0e0

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e4

“Treatment of seedling, on the other hand, with an aqueous extract of all windbreak types decreased all of the seedling growth parameters, fresh and dry weight (FW and DW), water content (WC), length of petioles (LP), number of buds (NB) and number of leaves (NL)”

✓ located verbatim in the source · abstract, characters 784–1046 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Aqueous extracts of all windbreak types decreased squash seedling petiole length, bud number and leaf number.

Taxon
squashe0
Treatment
aqueous extract of all windbreak typese4
Outcome
length of petioles (LP), number of buds (NB) and number of leaves (NL)e4
Direction
decreasede4
Comparator
0e0

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e4

“Treatment of seedling, on the other hand, with an aqueous extract of all windbreak types decreased all of the seedling growth parameters, fresh and dry weight (FW and DW), water content (WC), length of petioles (LP), number of buds (NB) and number of leaves (NL)”

✓ located verbatim in the source · abstract, characters 784–1046 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The three windbreak trees induced a stronger allelopathic effect on squash seedling growth than on squash seed germination.

Taxon
squashe0
Treatment
aqueous leaves extracte0
Outcome
allelopathic effect on squash seedling growthe5
Direction
higherinferrede5
Comparator
squash seed germinatione5

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e5

“The three windbreak trees induced an allelopathic effect on squash seedling growth in particular, more than the squash seed germination, but at different degrees”

✓ located verbatim in the source · abstract, characters 1048–1209 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Acacia extract had the highest inhibitory effect among the three windbreak extracts.

Taxon
squashe0
Treatment
Acacia extracte6
Outcome
inhibitory effectse6
Direction
higheste6
Comparator
Eucalyptus and Casurinae6

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e6

“Acacia extract resulted in the highest effect, while Eucalyptus and Casurina resulted in intermediate and low inhibitory effects respectively”

✓ located verbatim in the source · abstract, characters 1211–1352 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Eucalyptus leaf extract had an intermediate inhibitory effect.

Taxon
squashe0
Treatment
Eucalyptuse6
Outcome
inhibitory effectse6
Direction
intermediatee6
Comparator
Acacia extracte6

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e6

“Acacia extract resulted in the highest effect, while Eucalyptus and Casurina resulted in intermediate and low inhibitory effects respectively”

✓ located verbatim in the source · abstract, characters 1211–1352 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Casuarina leaf extract had a low inhibitory effect.

Taxon
squashe0
Treatment
Casurinae6
Outcome
inhibitory effectse6
Direction
lowe6
Comparator
Acacia extracte6

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e6

“Acacia extract resulted in the highest effect, while Eucalyptus and Casurina resulted in intermediate and low inhibitory effects respectively”

✓ located verbatim in the source · abstract, characters 1211–1352 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The inhibitory effect of windbreak extracts on squash germination and seedling growth increased with extract concentration from 0 to 100 g.L-1 in all three windbreaks.

Taxon
squashe0
Treatment
extract concentratione7
Outcome
inhibitory effecte7
Direction
increasede7

Verbatim

e0

“The effects of aqueous leaves extract of three types of windbreak trees, Acacia, Casuarina, and Eucalyptus, were tested at 0, 25, 50, 75, and 100 g.L-1 for their effect on squash (Cucurbita pepo L.) seed germination and seedling growth”

✓ located verbatim in the source · abstract, characters 0–235 · show in text ↑
e7

“In all three windbreaks, the inhibitory effect of the extract on the seed germination and seedling growth increased as the extract concentration increased from 0 to 100 g.L-1”

✓ located verbatim in the source · abstract, characters 1354–1528 · show in text ↑

Casuarina · growth · Cucurbita (pumpkins)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 reporting no difference from an alternative

  1. positive
See all 2 papers →

botanical · soil: physics · Cucurbita (pumpkins)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

botanical · growth · Cucurbita (pumpkins)Positive and negative results

10 papers: 4 positive, 6 negative or no effect

5 papers in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. positive
  3. positive

6 papers more in this group

See all 10 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.