Abstract
An effective rice callus screening method for breeding disease-resistant regenerated plants of sheath blight caused by Rhizoctonia solani Kuhn is yet to be developed. In this study, callus-resistant rice was screened using pathogenic crude toxins of highly virulent isolates, R. solani (Anastomosis Group 1-IA) collected from Sichuan Province, China. Highly susceptible rice cultivars, Lemont and moderate resistant rice cultivar, Kasalath were used for callus screening. The detached leaf and micro-chamber methods were used to evaluate the resistance of the regenerated plants (R0) and their offspring (R1). The disease resistance levels of R0 and R1 obviously improved when compared with the control (P>0.05). Rice seedlings were inoculated with 0.25 g of R. solani mycelium (fresh weight) at the base of the plant and then covered with transparent plastic bottles to maintain high humidity after inoculation. The resistance of R1 was enhanced than their progenitors, the disease index of R1 of Kasalath was 2.27 which was higher than that of IR64, 9311, TeQing and Gan72, while the disease index of R1 of Lemont was 3.14 which was higher than that of 9311, TeQing and Gan72. According to the nine-grade disease classification, the R1 of Lemont was moderately resistant, while the R1 of Kasalath was resistant.
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Claims 7
Claim · model-written summary
Sheath blight resistance of regenerated R0 rice plants improved relative to controls, although P was greater than 0.05.
- Taxon
- rice
Oryza sativae0 - Treatment
- pathogenic crude toxinse0
- Interactor
- R. solani
Rhizoctonia solanie0pathogen - Outcome
- disease resistance levels of R0e1
- Direction
- improvede1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus-resistant rice was screened using pathogenic crude toxins of highly virulent isolates, R. solani (Anastomosis Group 1-IA)”
e1“The disease resistance levels of R0 and R1 obviously improved when compared with the control (P>0.05).”
Claim · model-written summary
Sheath blight resistance of R1 rice offspring improved relative to controls, although P was greater than 0.05.
- Taxon
- riceOryza sativae0
- Treatment
- pathogenic crude toxinse0
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Outcome
- disease resistance levels of R0 and R1e1
- Direction
- improvede1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus-resistant rice was screened using pathogenic crude toxins of highly virulent isolates, R. solani (Anastomosis Group 1-IA)”
e1“The disease resistance levels of R0 and R1 obviously improved when compared with the control (P>0.05).”
Claim · model-written summary
R1 Kasalath resistance was reported as enhanced relative to its progenitor.
- Taxon
- riceOryza sativae1
- Material
- Kasalathe0
- Interactor
- R. solaniRhizoctonia solanie2pathogen
- Outcome
- resistance of R1e0
- Direction
- enhancede0
- Comparator
- their progenitorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The resistance of R1 was enhanced than their progenitors, the disease index of R1 of Kasalath was 2.27”
e1“rice cultivar, Kasalath”
e2“R. solani mycelium”
Claim · model-written summary
R1 Kasalath had a disease index of 2.27, reported as higher than IR64, 9311, TeQing and Gan72.
- Taxon
- riceOryza sativae1
- Material
- Kasalathe0
- Interactor
- R. solaniRhizoctonia solanie2pathogen
- Outcome
- disease index of R1e0
- Direction
- highere0
- Value
- 2.27e0
- Comparator
- IR64, 9311, TeQing and Gan72e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the disease index of R1 of Kasalath was 2.27 which was higher than that of IR64, 9311, TeQing and Gan72”
e1“rice cultivar, Kasalath”
e2“R. solani mycelium”
Claim · model-written summary
R1 Lemont had a disease index of 3.14, reported as higher than 9311, TeQing and Gan72.
- Taxon
- riceOryza sativae1
- Material
- Lemonte0
- Interactor
- R. solaniRhizoctonia solanie2pathogen
- Outcome
- disease index of R1e0
- Direction
- highere0
- Value
- 3.14e0
- Comparator
- 9311, TeQing and Gan72e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the disease index of R1 of Lemont was 3.14 which was higher than that of 9311, TeQing and Gan72”
e1“rice cultivars, Lemont”
e2“R. solani mycelium”
Claim · model-written summary
R1 Lemont was classified as moderately resistant.
- Taxon
- riceOryza sativae1
- Material
- Lemonte0
- Interactor
- R. solaniRhizoctonia solanie2pathogen
- Outcome
- moderately resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the R1 of Lemont was moderately resistant”
e1“rice cultivars, Lemont”
e2“R. solani mycelium”
Claim · model-written summary
R1 Kasalath was classified as resistant.
- Taxon
- riceOryza sativae1
- Material
- Kasalathe0
- Interactor
- R. solaniRhizoctonia solanie2pathogen
- Outcome
- resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the R1 of Kasalath was resistant”
e1“rice cultivar, Kasalath”
e2“R. solani mycelium”
The same questions in other papers
pathogen product · Rhizoctonia solani · Oryza sativa (rice)Positive and negative results
7 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 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.