Abstract
Abstract Resistance in Pisum sativum to Aphanomyces euteiches was evaluated in the laboratory by the number of oospores formed in excised root tips inoculated with zoospores of the pathogen. Significantly lower mean numbers of oospores formed in root tips of 3 moderately resistant breeding lines than in those of 3 susceptible cultivars. Results were reproduceable if test procedures were adequately controlled. A sample size of 40 root tips gave 95% confidence in detecting a 40 oospore/root tip difference between means of resistant and susceptible genotypes. Lower mean numbers of oospores formed in excised root tips of genotypes which were resistant in greenhouse tests. Inoculum concentrations of 10 to 100 zoospores/plant caused severe disease in susceptible cv. New Era, while greater amounts of inoculum were needed to cause comparable disease in 2 resistant breeding lines.
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Claims 6
Claim · model-written summary
Three moderately resistant pea breeding lines formed significantly lower mean numbers of oospores in root tips than three susceptible cultivars.
- Taxon
- Pisum sativum
Lathyrus oleraceuse0 - Material
- moderately resistant breeding linese1
- Interactor
- Aphanomyces euteichesAphanomyces euteichese0pathogen
- Outcome
- oospores formed in root tipse1
- Direction
- lowere1
- Comparator
- susceptible cultivarse1
- Setting
- laboratorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance in Pisum sativum to Aphanomyces euteiches was evaluated in the laboratory by the number of oospores formed in excised root tips inoculated with zoospores of the pathogen”
e1“Significantly lower mean numbers of oospores formed in root tips of 3 moderately resistant breeding lines than in those of 3 susceptible cultivars”
Claim · model-written summary
The excised root tip method gave reproducible results when test procedures were adequately controlled.
- Taxon
- Pisum sativumLathyrus oleraceuse0
- Outcome
- Results were reproduceablee2
- Comparator
- test procedures were adequately controllede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance in Pisum sativum to Aphanomyces euteiches was evaluated in the laboratory by the number of oospores formed in excised root tips inoculated with zoospores of the pathogen”
e2“Results were reproduceable if test procedures were adequately controlled”
Claim · model-written summary
A sample of 40 root tips gave 95% confidence in detecting a 40 oospore/root tip difference between resistant and susceptible genotypes.
- Taxon
- Pisum sativumLathyrus oleraceuse0
- Outcome
- confidence in detecting a 40 oospore/root tip differencee3
- Value
- 95%e3
- Qualifier
- sample size of 40 root tipse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance in Pisum sativum to Aphanomyces euteiches was evaluated in the laboratory by the number of oospores formed in excised root tips inoculated with zoospores of the pathogen”
e3“A sample size of 40 root tips gave 95% confidence in detecting a 40 oospore/root tip difference between means of resistant and susceptible genotypes”
Claim · model-written summary
Genotypes resistant in greenhouse tests formed lower mean numbers of oospores in excised root tips.
- Taxon
- Pisum sativumLathyrus oleraceuse0
- Material
- genotypes which were resistant in greenhouse testse4
- Interactor
- Aphanomyces euteichesAphanomyces euteichese0pathogen
- Outcome
- mean numbers of oospores formed in excised root tipse4
- Direction
- Lowere4
- Setting
- greenhouse testse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance in Pisum sativum to Aphanomyces euteiches was evaluated in the laboratory by the number of oospores formed in excised root tips inoculated with zoospores of the pathogen”
e4“Lower mean numbers of oospores formed in excised root tips of genotypes which were resistant in greenhouse tests”
Claim · model-written summary
Inoculum of 10 to 100 zoospores/plant caused severe disease in susceptible cv. New Era.
- Taxon
- Pisum sativumLathyrus oleraceuse0
- Material
- New Erae5
- Treatment
- Inoculum concentrations of 10 to 100 zoospores/plante5
- Interactor
- Aphanomyces euteichesAphanomyces euteichese0pathogen
- Outcome
- severe diseasee5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance in Pisum sativum to Aphanomyces euteiches was evaluated in the laboratory by the number of oospores formed in excised root tips inoculated with zoospores of the pathogen”
e5“Inoculum concentrations of 10 to 100 zoospores/plant caused severe disease in susceptible cv. New Era, while greater amounts of inoculum were needed to cause comparable disease in 2 resistant breeding lines”
Claim · model-written summary
Two resistant breeding lines needed greater amounts of inoculum to develop comparable disease than susceptible cv. New Era.
- Taxon
- Pisum sativumLathyrus oleraceuse0
- Material
- 2 resistant breeding linese5
- Treatment
- greater amounts of inoculume5
- Interactor
- Aphanomyces euteichesAphanomyces euteichese0pathogen
- Outcome
- comparable diseasee5
- Direction
- greatere5
- Comparator
- susceptible cv. New Erae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance in Pisum sativum to Aphanomyces euteiches was evaluated in the laboratory by the number of oospores formed in excised root tips inoculated with zoospores of the pathogen”
e5“Inoculum concentrations of 10 to 100 zoospores/plant caused severe disease in susceptible cv. New Era, while greater amounts of inoculum were needed to cause comparable disease in 2 resistant breeding lines”
The same questions in other papers
inoculation · Aphanomyces euteiches · Lathyrus oleraceus (pea)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- negative
1 paper more in this group
See all 5 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.