Abstract
SUMMARY Experiments were done with the aim of developing a reliable method for assessing the susceptibility of potato cultivars to blackleg caused by Erwinia carotovora subsp. atroseptica , in the field. Over four years seed tubers were either stab‐inoculated at the heel‐end prior to planting, vacuum infiltrated with bacteria just after harvest or vacuum infiltrated prior to sprouting and after ‘cutting’ or ‘pricking’. Stab inoculation produced fewer diseased plants but generally a greater range of symptoms than vacuum infiltration. Vacuum infiltrated ‘cut’ seed gave most disease whereas infiltration at harvest and infiltration of ‘pricked’ seed gave similar disease incidence. The cultivar Maris Piper was more resistant than Desiree in 1981 and 1982, and Pentland Javelin than Ulster Sceptre in 1983 and 1984, largely irrespective of the inoculation treatment. Irrigation improved yields but did not affect disease symptoms. In further field experiments over three years, each with a minimum of 20 cultivars, seed tubers were sliced just before planting at a standard distance from the apex and inoculated by applying a pad impregnated with inoculum. Differences were shown between cultivars and it is suggested that the method could be adapted for testing for blackleg susceptibility under controlled environment conditions.
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Claims 9
Claim · model-written summary
Stab inoculation produced fewer diseased potato plants than vacuum infiltration.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- Stab inoculatione0
- Interactor
- Erwinia carotovora subsp. atroseptica
Pectobacterium atrosepticumt0pathogen - Outcome
- diseased plantse0
- Direction
- fewere0
- Comparator
- vacuum infiltratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“Stab inoculation produced fewer diseased plants but generally a greater range of symptoms than vacuum infiltration.”
Claim · model-written summary
Stab inoculation generally produced a greater range of blackleg symptoms than vacuum infiltration.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Stab inoculatione0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- range of symptomse0
- Direction
- greatere0
- Comparator
- vacuum infiltratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“Stab inoculation produced fewer diseased plants but generally a greater range of symptoms than vacuum infiltration.”
Claim · model-written summary
Vacuum infiltrated cut seed gave the most disease.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Vacuum infiltrated ‘cut’ seede0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- diseasee0
- Direction
- moste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“Vacuum infiltrated ‘cut’ seed gave most disease”
Claim · model-written summary
Infiltration at harvest and infiltration of pricked seed gave similar disease incidence.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- infiltration at harveste0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- disease incidencee0
- Direction
- similare0
- Comparator
- infiltration of ‘pricked’ seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“infiltration at harvest and infiltration of ‘pricked’ seed gave similar disease incidence”
Claim · model-written summary
Maris Piper was more resistant to blackleg than Desiree in 1981 and 1982.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Maris Pipere0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- resistante0
- Direction
- moree0
- Qualifier
- in 1981 and 1982e0
- Comparator
- Desireee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“The cultivar Maris Piper was more resistant than Desiree in 1981 and 1982”
Claim · model-written summary
Pentland Javelin was more resistant to blackleg than Ulster Sceptre in 1983 and 1984.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Pentland Javeline0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- Pentland Javelin than Ulster Sceptree0
- Qualifier
- largely irrespective of the inoculation treatmente0
- Comparator
- Ulster Sceptree0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“Pentland Javelin than Ulster Sceptre in 1983 and 1984, largely irrespective of the inoculation treatment.”
Claim · model-written summary
Irrigation improved potato yields.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Irrigatione0
- Outcome
- yieldse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars”
e0“Irrigation improved yields but did not affect disease symptoms.”
Claim · model-written summary
Irrigation did not affect blackleg symptoms.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Irrigatione0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- disease symptomse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“Irrigation improved yields but did not affect disease symptoms.”
Claim · model-written summary
The sliced seed tuber inoculation method revealed cultivar differences in blackleg susceptibility.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- inoculated by applying a pad impregnated with inoculume0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- Differences were shown between cultivarse0
- Comparator
- between cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato cultivars to blackleg (Erwinia carotovora subsp. atroseptica)”
e0“seed tubers were sliced just before planting at a standard distance from the apex and inoculated by applying a pad impregnated with inoculum. Differences were shown between cultivars”
The same questions in other papers
irrigation · yield · Solanum tuberosum (potato)Results differ
74 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
88 papers more in this group
See all 92 papers →inoculation · Pectobacterium atrosepticum · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- negative
4 papers more in this group
See all 8 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.