Abstract
Tomato damping-off and root rot are the two most common diseases of tomatoes at the seedling stage. At present, biological compound seed-coating agents are gradually replacing chemical agents in preventing and controlling plant diseases and insect pests, regulating plant growth, and ensuring crop yields. In this study, five biocontrol bacteria (Bacillus amyloliquefaciens (Ba), Bacillus subtilis (Bs wy-1), Bacillus subtilis (WXCDD105), Pseudomonas fluorescens (WXCDD51), and Bacillus velezensis (WZ-37)), with broad antibacterial spectra were mixed with auxiliary factors (inactive components of seed-coating agent) after fermentation to compound a seed-coating agent. In this study, the formula for a compound seed-coating agent was selected through orthogonal experiment. Gaseous silica was used as a thickener, and gum arabic and sodium dodecylbenzene sulfonate were used as a film-forming agent and dispersant, respectively. The mass of fumed silica, gum arabic, sodium dodecylbenzene sulfonate, and pearlescent powder was 1.3 g, 1 g, 0.05 g, and 0.5 g, respectively. Adding gibberellin can improve the ability of seed-coating agents to promote seed germination and plant growth. This showed high efficiency in preventing and controlling seedling diseases and promoting seedling growth. After 6 days of inoculation with Pythium aphanidermatum, which caused tomato damping-off disease, the seedling mortality rate was 26.7% lower than that of the sterile water control, and 20% lower than that of carbendazim. After 21 days of inoculation with Fusarium sp., which caused tomato root rot disease, the seedling mortality rate was 44.31% lower than that of the control, and 22.36% lower than that of carbendazim. The plant height, stem diameter, root length, fresh weight, and dry weight of tomato seeds treated with biological compound seed-coating agent were significantly higher than that of the control. We tested the shelf life of the biological compound seed-coating agent, and found that the effect of seed germination and radicle growth did not decrease. This research provides information on the production technology and application of biological seed-coating agents in tomato production.
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Claims 8
Claim · model-written summary
Adding gibberellin improved the seed coating ability to promote germination and growth.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Adding gibberelline0
- Outcome
- seed germination and plant growthe0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding gibberellin can improve the ability of seed-coating agents to promote seed germination and plant growth”
t0“Tomato”
Claim · model-written summary
The coating reduced tomato damping-off seedling mortality by 26.7% versus sterile water.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- biological compound seed-coating agente1
- Interactor
- Pythium aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- seedling mortality ratee0
- Direction
- lowere0
- Value
- 26.7%e0
- Comparator
- sterile water controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 6 days of inoculation with Pythium aphanidermatum, which caused tomato damping-off disease, the seedling mortality rate was 26.7% lower than that of the sterile water control, and 20% lower than that of carbendazim”
e1“tomato seeds treated with biological compound seed-coating agent”
Claim · model-written summary
The coating reduced tomato damping-off seedling mortality by 20% versus carbendazim.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- biological compound seed-coating agente1
- Interactor
- Pythium aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- seedling mortality ratee0
- Direction
- lowere0
- Value
- 20%e0
- Comparator
- carbendazime0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 6 days of inoculation with Pythium aphanidermatum, which caused tomato damping-off disease, the seedling mortality rate was 26.7% lower than that of the sterile water control, and 20% lower than that of carbendazim”
e1“tomato seeds treated with biological compound seed-coating agent”
Claim · model-written summary
The coating reduced tomato root rot seedling mortality by 44.31% versus control.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- biological compound seed-coating agente1
- Outcome
- seedling mortality ratee0
- Direction
- lowere0
- Value
- 44.31%e0
- Comparator
- controle0
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 21 days of inoculation with Fusarium sp., which caused tomato root rot disease, the seedling mortality rate was 44.31% lower than that of the control, and 22.36% lower than that of carbendazim”
e1“tomato seeds treated with biological compound seed-coating agent”
Claim · model-written summary
The coating reduced tomato root rot seedling mortality by 22.36% versus carbendazim.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- biological compound seed-coating agente1
- Outcome
- seedling mortality ratee0
- Direction
- lowere0
- Value
- 22.36%e0
- Comparator
- carbendazime0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 21 days of inoculation with Fusarium sp., which caused tomato root rot disease, the seedling mortality rate was 44.31% lower than that of the control, and 22.36% lower than that of carbendazim”
e1“tomato seeds treated with biological compound seed-coating agent”
Claim · model-written summary
Coated tomato seeds produced significantly greater plant height, stem diameter, and root length than controls.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- biological compound seed-coating agente0
- Outcome
- plant height, stem diameter, root lengthe0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant height, stem diameter, root length, fresh weight, and dry weight of tomato seeds treated with biological compound seed-coating agent were significantly higher than that of the control”
Claim · model-written summary
Coated tomato seeds produced significantly greater fresh and dry weight than controls.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- biological compound seed-coating agente0
- Outcome
- fresh weight, and dry weighte0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant height, stem diameter, root length, fresh weight, and dry weight of tomato seeds treated with biological compound seed-coating agent were significantly higher than that of the control”
Claim · model-written summary
The coating maintained its seed germination and radicle growth effects over shelf life.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- seed germination and radicle growthe0
- Direction
- did not decreasee0
- Comparator
- shelf lifee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We tested the shelf life of the biological compound seed-coating agent, and found that the effect of seed germination and radicle growth did not decrease”
t0“Tomato”
The same questions in other papers
class · growth · Solanum lycopersicum (tomato)Positive and negative results
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- no effect
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See all 131 papers →seed treatment · Fusarium · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
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- positive
- positive
seed treatment · Pythium aphanidermatum · Solanum lycopersicum (tomato)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
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See all 8 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.