Claim · model-written summary
Race 1 was recovered in most 'NC 71' treatments by the third season.
- Taxon
- tobacco
Nicotiana tabacume1 - Material
- NC 71e0
- Outcome
- race 1 was recoverede0
- Qualifier
- By the end of the third growing seasone0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By the end of the third growing season, race 1 was recovered from most 'NC 71' treatments.”
e1“Deployment of tobacco cultivars with single-gene (Ph)”
Title
Characterization and Management of the Race Structure of Phytophthora parasitica var. nicotianae
Melinda Jo Sullivan NCSU Libraries Repository (North Carolina State University Libraries) 2005
Other claims from this paper (19)
- Association Deployment of Ph complete resistance was followed by rapid race 1 increase in N.C.
- Intervention effect 'K 346' had the strongest disease reduction in a mixed-race field.
- Intervention effect Race 1 populations decreased under 'K 346' high partial resistance in a mixed-race field.
- Intervention effect 'NC 71' complete resistance yielded intermediate disease levels.
- Intervention effect Race 1 increased following 'NC 71' complete resistance deployment.
- Intervention effect 'K 326' low partial resistance had the highest disease levels.
- Observation Race 0 dominated under 'K 326' low partial resistance.
- Intervention effect Partial resistance produced high disease incidence where race 1 was initially absent.
- Intervention effect Complete resistance suppressed disease where race 1 was initially absent.
- Observation Race 1 was recovered after one season of complete resistance.
- Intervention effect High partial resistance best controlled disease where race 1 predominated.
- Intervention effect Race 0 increased rapidly under high partial resistance where race 1 predominated.
- Intervention effect Rotation of single-gene and high partial resistance most effectively managed disease and minimized race shifts.
- Intervention effect Race 1 populations decreased relative to race 0 when partial and complete resistance cultivars were rotated.
- Observation Race 0 isolates showed greater aggressiveness, shorter incubation, and more severe root rot than race 1.
- Observation Race 1 isolates caused greater plant stunting than race 0.
- Observation Race survival did not differ statistically, though race 0 tended to survive better across both years.
- Observation AFLP analysis identified 256 polymorphic markers and 106 profiles among the isolates.
- Observation Race 0 and race 1 AFLP profiles differed by only 2 to 4 markers.