Abstract
By using the techniques of tissue culture, bio-assay and laboratory analysis, this paper studied the effects of the allelopathic chemicals from pumpkin (Cucurbita moschata) roots on the seed germination and seedling growth of pumpkin, wheat (Triticum aestivum), and radish (Raphanus sativus). The pumpkin root was cultured on a sterile B5 media, and the concentrations of macro- and microelements, organic supplements and hormones in the media were adjusted by using an orthogonal design. After culturing, the culture media was filtered and used in a bioassay to test the autotoxicity and allelopathic effects. The results showed that the pumpkin had both autotoxic and allelopathic effects, and the media having been used to culture the pumpkin roots contained the chemicals that significantly inhibited the seedling growth of wheat and radish. The allelopathic effect decreased when the culture media was diluted. The production of allelochemicals seemed to be related to the growth rate of the pumpkin roots. When the root growth was rapid, the concentration of allelochemicals was high. The allelopathic effect was stronger on radish than on wheat. The optimum concentrations of macro- and microelements, vitamins and hormones for culturing pumpkin root were determined, and the effect of pumpkin root nutrition on the production of allelochemicals was tested. The results indicated that pumpkin root nutrition had a significant effect on the production of allelochemicals.
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Claims 8
Claim · model-written summary
Pumpkin root exudates had an autotoxic effect on pumpkin.
- Taxon
- pumpkine0
- Treatment
- allelopathic chemicals from pumpkin (Cucurbita moschata) rootse1
- Outcome
- autotoxice0
Not reportedInteractorComparatorDirection
Verbatim
e0“The results showed that the pumpkin had both autotoxic and allelopathic effects”
e1“the allelopathic chemicals from pumpkin (Cucurbita moschata) roots”
t0“Cucurbita moschata”
Claim · model-written summary
Chemicals in pumpkin root culture medium significantly inhibited wheat seedling growth.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- the media having been used to culture the pumpkin rootse0
- Interactor
- pumpkine0other
- Outcome
- seedling growth of wheate0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the media having been used to culture the pumpkin roots contained the chemicals that significantly inhibited the seedling growth of wheat and radish”
e1“wheat (Triticum aestivum)”
Claim · model-written summary
Chemicals in pumpkin root culture medium significantly inhibited radish seedling growth.
- Taxon
- radish
Raphanus sativuse0 - Treatment
- the media having been used to culture the pumpkin rootse0
- Interactor
- pumpkine0other
- Outcome
- seedling growth of wheat and radishe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the media having been used to culture the pumpkin roots contained the chemicals that significantly inhibited the seedling growth of wheat and radish”
Claim · model-written summary
Dilution of pumpkin root culture medium decreased its allelopathic effect.
- Taxon
- wheatTriticum aestivume1
- Treatment
- the culture media was dilutede0
- Interactor
- pumpkine2other
- Outcome
- allelopathic effecte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The allelopathic effect decreased when the culture media was diluted.”
e1“seedling growth of wheat and radish”
e2“pumpkin (Cucurbita moschata) roots”
Claim · model-written summary
Allelochemical production appeared related to pumpkin root growth rate.
- Taxon
- pumpkine0
- Organ / stage
- pumpkin rootse0
- Outcome
- production of allelochemicalse0
- Qualifier
- seemed to be related to the growth ratee0
Not reportedDirection
Verbatim
e0“The production of allelochemicals seemed to be related to the growth rate of the pumpkin roots.”
e1“pumpkin (Cucurbita moschata) roots”
Claim · model-written summary
Allelochemical concentration was high when pumpkin root growth was rapid.
Verbatim
e0“When the root growth was rapid, the concentration of allelochemicals was high.”
e1“pumpkin (Cucurbita moschata) roots”
Claim · model-written summary
The allelopathic effect was stronger on radish than on wheat.
- Taxon
- radishRaphanus sativuse0
- Interactor
- pumpkine1other
- Outcome
- allelopathic effecte0
- Direction
- strongere0
- Comparator
- wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The allelopathic effect was stronger on radish than on wheat.”
e1“pumpkin (Cucurbita moschata) roots”
Claim · model-written summary
Pumpkin root nutrition significantly affected allelochemical production.
Not reportedComparatorDirection
Verbatim
e0“pumpkin root nutrition had a significant effect on the production of allelochemicals.”
e1“pumpkin (Cucurbita moschata) roots”
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See all 106 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.