Abstract
Some rice cultivars have demonstrated allelopathic potential against most of the troublesome weed species in paddy fields. Hull extracts from 46 rice cultivars at various concentrations were used in bioassay tests to evaluate their effects on seedling growth of barnyardgrass . Hull extracts of cultivars Dashtisard and Dinorado showed higher inhibitory effects on root growth than the others while Alikazemi and Sepidrood had low inhibitory effects. Dinorado and Neda had high inhibitory effects on shoot growth, whereas hull extracts of Line-229 and USEN showed high stimulatory effects on shoot growth of barnyardgrass seedlings. The barnyardgrass roots were more sensitive to hull extracts than the shoot extracts. Hull extracts of five rice cultivars were identified with the highest inhibitory effect on barnyardgrass seedling growth, from which Dinorado, Neda, Dashtisard and IR-60 had inhibitory activities and Line229 had stimulatory potential. Inhibitory activity of rice hulls can be used to screen allelopathic rice cultivars. The cultivars with more hull allelopathic effects can lead us to cultivars with a natural source of herbicides. The genetic differences among rice cultivars exhibit variation in allelopathic effects on barnyardgrass growth. Breeding of
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Claims 13
Claim · model-written summary
Dashtisard hull extract inhibited barnyardgrass root growth more strongly than extracts of other cultivars.
- Taxon
- RICE
Oryza sativat0 - Material
- Dashtisarde0
- Treatment
- Hull extractse0
- Interactor
- BARNYARDGRASS
Echinochloa crus-gallit0weed - Outcome
- root growthe0
- Direction
- higher inhibitory effectse0
- Comparator
- the otherse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hull extracts of cultivars Dashtisard and Dinorado showed higher inhibitory effects on root growth than the others”
t0“RICE HULL EXTRACTS ON BARNYARDGRASS”
Claim · model-written summary
Dinorado hull extract inhibited barnyardgrass root growth more strongly than extracts of other cultivars.
- Taxon
- RICEOryza sativat0
- Material
- Dinoradoe0
- Treatment
- Hull extractse0
- Interactor
- BARNYARDGRASSEchinochloa crus-gallit0weed
- Outcome
- root growthe0
- Direction
- higher inhibitory effectse0
- Comparator
- the otherse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hull extracts of cultivars Dashtisard and Dinorado showed higher inhibitory effects on root growth than the others”
t0“RICE HULL EXTRACTS ON BARNYARDGRASS”
Claim · model-written summary
Alikazemi hull extract had low inhibitory effects on barnyardgrass root growth.
- Taxon
- RICEOryza sativat0
- Material
- Alikazemie0
- Interactor
- BARNYARDGRASSEchinochloa crus-gallit0weed
- Outcome
- root growthe1
- Direction
- low inhibitory effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alikazemi and Sepidrood had low inhibitory effects”
e1“root growth”
t0“RICE HULL EXTRACTS ON BARNYARDGRASS”
Claim · model-written summary
Sepidrood hull extract had low inhibitory effects on barnyardgrass root growth.
- Taxon
- RICEOryza sativat0
- Material
- Sepidroode0
- Interactor
- BARNYARDGRASSEchinochloa crus-gallit0weed
- Outcome
- root growthe1
- Direction
- low inhibitory effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alikazemi and Sepidrood had low inhibitory effects”
e1“root growth”
t0“RICE HULL EXTRACTS ON BARNYARDGRASS”
Claim · model-written summary
Dinorado hull extract strongly inhibited barnyardgrass shoot growth.
- Taxon
- RICEOryza sativat0
- Material
- Dinoradoe0
- Interactor
- BARNYARDGRASSEchinochloa crus-gallit0weed
- Outcome
- shoot growthe0
- Direction
- high inhibitory effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dinorado and Neda had high inhibitory effects on shoot growth”
t0“RICE HULL EXTRACTS ON BARNYARDGRASS”
Claim · model-written summary
Neda hull extract strongly inhibited barnyardgrass shoot growth.
- Taxon
- RICEOryza sativat0
- Material
- Nedae0
- Interactor
- BARNYARDGRASSEchinochloa crus-gallit0weed
- Outcome
- shoot growthe0
- Direction
- high inhibitory effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dinorado and Neda had high inhibitory effects on shoot growth”
t0“RICE HULL EXTRACTS ON BARNYARDGRASS”
Claim · model-written summary
Line-229 hull extract strongly stimulated barnyardgrass shoot growth.
- Taxon
- riceOryza sativae1
- Material
- Line-229e0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- shoot growth of barnyardgrass seedlingse0
- Direction
- high stimulatory effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hull extracts of Line-229 and USEN showed high stimulatory effects on shoot growth of barnyardgrass seedlings”
e1“from 46 rice cultivars”
Claim · model-written summary
USEN hull extract strongly stimulated barnyardgrass shoot growth.
- Taxon
- riceOryza sativae1
- Material
- USENe0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- shoot growth of barnyardgrass seedlingse0
- Direction
- high stimulatory effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hull extracts of Line-229 and USEN showed high stimulatory effects on shoot growth of barnyardgrass seedlings”
e1“from 46 rice cultivars”
Claim · model-written summary
Barnyardgrass roots were more sensitive to rice hull extracts than shoots.
- Taxon
- riceOryza sativae1
- Organ / stage
- rootse0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- sensitive to hull extractse0
- Direction
- more sensitivee0
- Comparator
- shoot extractse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The barnyardgrass roots were more sensitive to hull extracts than the shoot extracts”
e1“from 46 rice cultivars”
Claim · model-written summary
IR-60 hull extract had inhibitory activity against barnyardgrass seedling growth.
- Taxon
- riceOryza sativae2
- Material
- IR-60e0
- Interactor
- barnyardgrassEchinochloa crus-gallie1weed
- Outcome
- barnyardgrass seedling growthe1
- Direction
- inhibitory activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dinorado, Neda, Dashtisard and IR-60 had inhibitory activities”
e1“barnyardgrass seedling growth”
e2“from 46 rice cultivars”
Claim · model-written summary
Line229 hull extract had stimulatory potential for barnyardgrass seedling growth.
- Taxon
- riceOryza sativae2
- Material
- Line229e0
- Interactor
- barnyardgrassEchinochloa crus-gallie1weed
- Outcome
- barnyardgrass seedling growthe1
- Direction
- stimulatory potentiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Line229 had stimulatory potential”
e1“barnyardgrass seedling growth”
e2“from 46 rice cultivars”
Claim · model-written summary
Rice hull inhibitory activity can be used to screen allelopathic cultivars.
- Taxon
- riceOryza sativae0
- Outcome
- screen allelopathic rice cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibitory activity of rice hulls can be used to screen allelopathic rice cultivars”
Claim · model-written summary
Genetic differences among rice cultivars corresponded to variation in allelopathic effects on barnyardgrass growth.
- Taxon
- riceOryza sativae0
- Material
- rice cultivarse0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- allelopathic effects on barnyardgrass growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genetic differences among rice cultivars exhibit variation in allelopathic effects on barnyardgrass growth”
The same questions in other papers
botanical · Echinochloa crus-galli · Oryza sativa (rice)Positive and negative results
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