Abstract
ABSTRACT The application of silicon (Si) fertilizers reduces the severity of blast, caused by Magnaporthe grisea, in irrigated and upland rice; however, little research has been conducted to examine the epidemiological and etiological components of this reduction. Four cultivars of rice with differential susceptibilities to race IB-49 of M. grisea were fertilized with three rates of a calcium silicate fertilizer and inoculated with the pathogen to test the effects of Si on the following components of resistance to blast: incubation period, latent period, infection efficiency, lesion size, rate of lesion expansion, sporulation per lesion, and diseased leaf area. For each cultivar, the incubation period was lengthened by increased rates of Si, and the numbers of sporulating lesions, lesion size, rate of lesion expansion, diseased leaf area, and number of spores per lesion were reduced. Lesion size and sporulation per lesion were lowered by 30 to 45%, and the number of sporulating lesions per leaf and diseased leaf area were significantly reduced at the highest rate of Si. The net effect of Si on these components of resistance is an overall reduction in the production of conidia on plants infected with M. grisea, thereby slowing the epidemic rate of blast.
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Claims 9
Claim · model-written summary
Increasing silicon rates lengthened rice blast incubation period in each cultivar.
- Taxon
- Rice
Oryza sativat0 - Treatment
- increased rates of Sie0
- Interactor
- Magnaporthe grisea
Pyricularia griseae1pathogen - Outcome
- incubation periode0
- Direction
- lengthenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For each cultivar, the incubation period was lengthened by increased rates of Si”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“caused by Magnaporthe grisea”
Claim · model-written summary
Increasing silicon reduced the number of sporulating rice blast lesions.
- Taxon
- RiceOryza sativat0
- Treatment
- calcium silicate fertilizere1
- Interactor
- M. griseaPyricularia griseae1pathogen
- Outcome
- numbers of sporulating lesionse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For each cultivar, the incubation period was lengthened by increased rates of Si, and the numbers of sporulating lesions, lesion size, rate of lesion expansion, diseased leaf area, and number of spores per lesion were reduced.”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“Four cultivars of rice with differential susceptibilities to race IB-49 of M. grisea were fertilized with three rates of a calcium silicate fertilizer”
Claim · model-written summary
Increasing silicon lowered rice blast lesion size by 30 to 45%.
- Taxon
- RiceOryza sativat0
- Treatment
- calcium silicate fertilizere1
- Interactor
- M. griseaPyricularia griseae1pathogen
- Outcome
- Lesion sizee0
- Direction
- lowerede0
- Value
- 30 to 45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lesion size and sporulation per lesion were lowered by 30 to 45%”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“Four cultivars of rice with differential susceptibilities to race IB-49 of M. grisea were fertilized with three rates of a calcium silicate fertilizer”
Claim · model-written summary
Increasing silicon lowered sporulation per rice blast lesion by 30 to 45%.
- Taxon
- RiceOryza sativat0
- Treatment
- calcium silicate fertilizere1
- Interactor
- M. griseaPyricularia griseae1pathogen
- Outcome
- sporulation per lesione0
- Direction
- lowerede0
- Value
- 30 to 45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lesion size and sporulation per lesion were lowered by 30 to 45%”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“Four cultivars of rice with differential susceptibilities to race IB-49 of M. grisea were fertilized with three rates of a calcium silicate fertilizer”
Claim · model-written summary
Increasing silicon reduced rice blast lesion expansion rate.
- Taxon
- RiceOryza sativat0
- Treatment
- calcium silicate fertilizere1
- Interactor
- M. griseaPyricularia griseae1pathogen
- Outcome
- rate of lesion expansione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For each cultivar, the incubation period was lengthened by increased rates of Si, and the numbers of sporulating lesions, lesion size, rate of lesion expansion, diseased leaf area, and number of spores per lesion were reduced.”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“Four cultivars of rice with differential susceptibilities to race IB-49 of M. grisea were fertilized with three rates of a calcium silicate fertilizer”
Claim · model-written summary
At the highest silicon rate, rice diseased leaf area was significantly reduced.
- Taxon
- RiceOryza sativat0
- Treatment
- highest rate of Sie0
- Interactor
- Magnaporthe griseaPyricularia griseae1pathogen
- Outcome
- diseased leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of sporulating lesions per leaf and diseased leaf area were significantly reduced at the highest rate of Si”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“caused by Magnaporthe grisea”
Claim · model-written summary
Increasing silicon reduced spores per rice blast lesion.
- Taxon
- RiceOryza sativat0
- Treatment
- calcium silicate fertilizere1
- Interactor
- M. griseaPyricularia griseae1pathogen
- Outcome
- number of spores per lesione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For each cultivar, the incubation period was lengthened by increased rates of Si, and the numbers of sporulating lesions, lesion size, rate of lesion expansion, diseased leaf area, and number of spores per lesion were reduced.”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“Four cultivars of rice with differential susceptibilities to race IB-49 of M. grisea were fertilized with three rates of a calcium silicate fertilizer”
Claim · model-written summary
At the highest silicon rate, sporulating lesions per rice leaf were significantly reduced.
- Taxon
- RiceOryza sativat0
- Treatment
- highest rate of Sie0
- Interactor
- Magnaporthe griseaPyricularia griseae1pathogen
- Outcome
- number of sporulating lesions per leafe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of sporulating lesions per leaf and diseased leaf area were significantly reduced at the highest rate of Si”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
e1“caused by Magnaporthe grisea”
Claim · model-written summary
Silicon-induced changes to resistance components reduced conidia production on infected rice and slowed the blast epidemic.
- Taxon
- RiceOryza sativat0
- Treatment
- Sie0
- Interactor
- M. griseaPyricularia griseae0pathogen
- Outcome
- production of conidia on plants infected with M. griseae0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net effect of Si on these components of resistance is an overall reduction in the production of conidia on plants infected with M. grisea, thereby slowing the epidemic rate of blast”
t0“The Influence of Silicon on Components of Resistance to Blast in Susceptible, Partially Resistant, and Resistant Cultivars of Rice”
The same questions in other papers
silicon atom · Pyricularia grisea · Oryza sativa (rice)Results agree
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- positive
- positive
- positive
3 papers more in this group
See all 7 papers →fertilization · Pyricularia grisea · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
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.