Abstract
Gibberellin (GA₃) is a growth hormone that is essential in plant physiological processes. At present, gibberellins are employed in commerce to enhance the physical traits and yield of various vegetable, horticultural, ornamental, and medicinal crops. This research aimed to study the effects of gibberellin application on the morphological characteristics and yield of lettuce plants. The study was arranged in a Completely Randomized Design (CRD) with six treatments of gibberellins concentration with a hydroponic system, namely: G0 = control, G1 = 20 ppm, G2 = 40 ppm, G3 = 60 ppm, G4 = 80 ppm, and G5 = 100 ppm, and each treatment consisted of four replications. This research was conducted in May–July 2023 at the Kemuning Greenhouse, Belu Regency, East Nusa Tenggara. GA₃s were sprayed twice at 2 weeks after sowing and 1 week after transplanting. The results showed that the highest GA₃ concentration (100 ppm) had a negative impact on plant morphology and yield, producing the smallest number of leaves, too long stem, pale green leaves, and the lowest fresh weight. Meanwhile, GA₃ concentration of 40 ppm resulted in the highest number of leaves. However, this increase is not directly proportional to the fresh weight of the leaves. GA₃ concentration of 40 ppm resulted in the best and most efficient yield of leaves and fresh weight, making it highly recommended.
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Claims 8
Claim · model-written summary
At 100 ppm GA₃, lettuce produced the smallest number of leaves.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- GA₃ concentration (100 ppm)e0
- Outcome
- number of leavese0
- Direction
- smalleste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest GA₃ concentration (100 ppm) had a negative impact on plant morphology and yield, producing the smallest number of leaves”
t0“lettuce”
Claim · model-written summary
At 100 ppm GA₃, lettuce stems became too long.
- Taxon
- lettuceLactuca sativat0
- Treatment
- GA₃ concentration (100 ppm)e0
- Outcome
- steme0
- Direction
- too longe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest GA₃ concentration (100 ppm) had a negative impact on plant morphology and yield, producing the smallest number of leaves, too long stem”
t0“lettuce”
Claim · model-written summary
At 100 ppm GA₃, lettuce leaves were pale green.
- Taxon
- lettuceLactuca sativat0
- Treatment
- GA₃ concentration (100 ppm)e0
- Outcome
- pale green leavese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest GA₃ concentration (100 ppm) had a negative impact on plant morphology and yield, producing the smallest number of leaves, too long stem, pale green leaves”
t0“lettuce”
Claim · model-written summary
At 100 ppm GA₃, lettuce had the lowest fresh weight.
- Taxon
- lettuceLactuca sativat0
- Treatment
- GA₃ concentration (100 ppm)e0
- Outcome
- fresh weighte0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest GA₃ concentration (100 ppm) had a negative impact on plant morphology and yield, producing the smallest number of leaves, too long stem, pale green leaves, and the lowest fresh weight”
t0“lettuce”
Claim · model-written summary
At 40 ppm GA₃, lettuce had the highest leaf number.
- Taxon
- lettuceLactuca sativat0
- Treatment
- GA₃ concentration of 40 ppme0
- Outcome
- number of leavese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA₃ concentration of 40 ppm resulted in the highest number of leaves”
t0“lettuce”
Claim · model-written summary
The gain in leaf number at 40 ppm GA₃ was not proportional to leaf fresh weight.
- Taxon
- lettuceLactuca sativat0
- Organ / stage
- leavese0
- Outcome
- fresh weight of the leavese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this increase is not directly proportional to the fresh weight of the leaves”
t0“lettuce”
Claim · model-written summary
The authors found 40 ppm GA₃ gave the best and most efficient leaf and fresh weight yield.
- Taxon
- lettuceLactuca sativat0
- Treatment
- GA₃ concentration of 40 ppme0
- Outcome
- yield of leaves and fresh weighte0
- Direction
- best and most efficiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA₃ concentration of 40 ppm resulted in the best and most efficient yield of leaves and fresh weight”
t0“lettuce”
Claim · model-written summary
The authors recommend 40 ppm GA₃ for lettuce production.
- Taxon
- lettuceLactuca sativat0
- Treatment
- GA₃ concentration of 40 ppme0
- Outcome
- highly recommendede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA₃ concentration of 40 ppm resulted in the best and most efficient yield of leaves and fresh weight, making it highly recommended”
t0“lettuce”
The same questions in other papers
Gibberellic acid · yield · Lactuca sativa (garden lettuce)Results differ
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- no effect
2 papers more in this group
See all 6 papers →Gibberellic acid · growth · Lactuca sativa (garden lettuce)Results differ
35 papers in the same direction as this paper · 8 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
41 papers more in this group
See all 45 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.