Abstract
Exogenously applied plant growth regulators may affect development of onion, but little is know about how concentration or timing of application can affect bulb grade and quality. Two concentrations of the growth regulators abscisic acid, gibberellic acid, indole-acetic acid, jasmonic acid, kinetin, and maleic acid hydrazide, and water controls, were applied at the 7- and 20-leaf stages to the middle of the leaf whorl in greenhouse grown onion plants. Leaf and bulb weights were lighter, and bulb diameters were smaller, from plants treated with growth regulators applied at the 7-leaf stage than those from plants treated at the 20-leaf stage. Bulbs produced on plants treated with water were the same size, or larger, than those produced on plants treated with individual growth regulators.
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Claims 3
Claim · model-written summary
Onion bulbs from water-treated plants were the same size or larger than bulbs from plants treated with individual growth regulators.
- Taxon
- onion
Allium cepae0 - Treatment
- individual growth regulatorse1
- Outcome
- Bulb Size or Weightt0
- Direction
- the same size, or largere1
- Comparator
- watere1
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth Regulators Do Not Increase Onion Bulb Size or Weight”
e0“greenhouse grown onion plants”
e1“Bulbs produced on plants treated with water were the same size, or larger, than those produced on plants treated with individual growth regulators”
Claim · model-written summary
Leaf and bulb weights of onion were lighter with growth regulators applied at the 7-leaf stage than at the 20-leaf stage.
- Taxon
- onionAllium cepae0
- Treatment
- growth regulators applied at the 7-leaf stagee2
- Outcome
- Leaf and bulb weightse2
- Direction
- lightere2
- Comparator
- plants treated at the 20-leaf stagee2
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greenhouse grown onion plants”
e2“Leaf and bulb weights were lighter, and bulb diameters were smaller, from plants treated with growth regulators applied at the 7-leaf stage than those from plants treated at the 20-leaf stage”
Claim · model-written summary
Onion bulb diameters were smaller with growth regulators applied at the 7-leaf stage than at the 20-leaf stage.
- Taxon
- onionAllium cepae0
- Treatment
- growth regulators applied at the 7-leaf stagee2
- Outcome
- bulb diameterse2
- Direction
- smallere2
- Comparator
- plants treated at the 20-leaf stagee2
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greenhouse grown onion plants”
e2“Leaf and bulb weights were lighter, and bulb diameters were smaller, from plants treated with growth regulators applied at the 7-leaf stage than those from plants treated at the 20-leaf stage”
The same questions in other papers
class · yield · Allium cepa (onion)Positive and negative results
5 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 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.