Abstract
Inheritance of quantitative resistance of IR26 was studied through the analysis of 5 populations, P1, P2, F1, F2 and F3, derived from the cross Kinmaze/IR26, and an effective means of selection for the resistance was presented. Experimental results showed that IR 26 exhibited a non-specific resistance to all the five bacterial groups existing in Japan. According to the analysis of variance, the resistances of the F3 lines originating from IR26 differed non-specifically, and the strains from the bacterial groups I to V differed in aggressiveness but not in virulence. Selection experiments for the resistance in the F2 generation indicated that individual selection was effective and the selection by using a single bacterial group resulted in significant improvements not only in the resistance to the relevant bacterial group but also in the resistances to all the others. The selection of plants non-specifically resistant to all the bacterial groups could be obtained without the inoculation of all the bacterial groups. This was attributable to the fact that the quantitative resistances to the bacterial groups I to v originating from IR26 had a high heritability each and were highly correlated with each other both genotypically and phenotypically. Experimental results also showed that a strain with a relatively strong aggressiveness was best for the selection, and the degree of aggressiveness of a strain to a hybrid population could be estimated by that to the resistant parent.
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Claims 11
Claim · model-written summary
IR26 resisted all five bacterial groups in Japan.
- Taxon
- rice
Oryza sativat0 - Material
- IR 26e0
- Interactor
- bacterial groupse0pathogen
- Outcome
- non-specific resistancee0
- Value
- five bacterial groupse0
- Setting
- Japane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IR 26 exhibited a non-specific resistance to all the five bacterial groups existing in Japan.”
t0“rice”
Claim · model-written summary
F3 lines differed in nonspecific resistance.
- Taxon
- riceOryza sativat0
- Material
- F3 linese0
- Interactor
- bacterial groups I to Ve0pathogen
- Outcome
- resistancese0
- Direction
- differed non-specificallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the resistances of the F3 lines originating from IR26 differed non-specifically, and the strains from the bacterial groups I to V differed in aggressiveness but not in virulence.”
t0“rice”
Claim · model-written summary
Bacterial groups differed in aggressiveness.
- Taxon
- riceOryza sativat0
- Interactor
- bacterial groups I to Ve0pathogen
- Outcome
- aggressivenesse0
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the resistances of the F3 lines originating from IR26 differed non-specifically, and the strains from the bacterial groups I to V differed in aggressiveness but not in virulence.”
t0“rice”
Claim · model-written summary
Bacterial groups did not differ in virulence.
- Taxon
- riceOryza sativat0
- Interactor
- bacterial groups I to Ve0pathogen
- Outcome
- virulencee0
- Direction
- not ine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the resistances of the F3 lines originating from IR26 differed non-specifically, and the strains from the bacterial groups I to V differed in aggressiveness but not in virulence.”
t0“rice”
Claim · model-written summary
Individual F2 selection was effective for resistance.
- Taxon
- riceOryza sativat0
- Outcome
- individual selection was effectivee0
- Comparator
- selection by using a single bacterial groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“individual selection was effective and the selection by using a single bacterial group resulted in significant improvements not only in the resistance to the relevant bacterial group but also in the resistances to all the others.”
t0“rice”
Claim · model-written summary
Selection using one bacterial group improved resistance to it and the others.
- Taxon
- riceOryza sativat0
- Treatment
- selection by using a single bacterial groupe0
- Interactor
- bacterial groupe0pathogen
- Outcome
- resistancee0
- Direction
- improvementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“individual selection was effective and the selection by using a single bacterial group resulted in significant improvements not only in the resistance to the relevant bacterial group but also in the resistances to all the others.”
t0“rice”
Claim · model-written summary
Selection for broad resistance could be achieved without inoculating all bacterial groups.
- Taxon
- riceOryza sativat0
- Interactor
- bacterial groupse0pathogen
- Outcome
- selection of plants non-specifically resistante0
- Comparator
- without the inoculation of all the bacterial groupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The selection of plants non-specifically resistant to all the bacterial groups could be obtained without the inoculation of all the bacterial groups.”
t0“rice”
Claim · model-written summary
IR26-derived quantitative resistances had high heritability.
- Taxon
- riceOryza sativat0
- Material
- IR26e0
- Interactor
- bacterial groups I to ve0pathogen
- Outcome
- high heritabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the quantitative resistances to the bacterial groups I to v originating from IR26 had a high heritability each and were highly correlated with each other both genotypically and phenotypically.”
t0“rice”
Claim · model-written summary
Resistances were highly correlated genotypically and phenotypically.
- Taxon
- riceOryza sativat0
- Material
- IR26e0
- Interactor
- bacterial groups I to ve0pathogen
- Outcome
- highly correlatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the quantitative resistances to the bacterial groups I to v originating from IR26 had a high heritability each and were highly correlated with each other both genotypically and phenotypically.”
t0“rice”
Claim · model-written summary
A relatively aggressive bacterial strain was best for selection.
- Taxon
- riceOryza sativat0
- Interactor
- a straine0pathogen
- Outcome
- a strain with a relatively strong aggressiveness was best for the selectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a strain with a relatively strong aggressiveness was best for the selection, and the degree of aggressiveness of a strain to a hybrid population could be estimated by that to the resistant parent.”
t0“rice”
Claim · model-written summary
Aggressiveness on the resistant parent estimated aggressiveness on a hybrid population.
- Taxon
- riceOryza sativat0
- Interactor
- a straine0pathogen
- Outcome
- degree of aggressivenesse0
- Comparator
- resistant parente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a strain with a relatively strong aggressiveness was best for the selection, and the degree of aggressiveness of a strain to a hybrid population could be estimated by that to the resistant parent.”
t0“rice”