Claim · model-written summary
Failure of the inherent resistance of Stirling Castle in midwinter at Toronto is largely due to the reduced light experience of plants grown at that time.
- Taxon
- Lyco-persicum esculentume6
- Outcome
- failure of the expression of the inherent resistancee7
- Qualifier
- reduced light experience of plantse7
- Setting
- Torontoe7
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionValue
Verbatim
e6“Of such variations the seasonal fluctuations in the reaction of Lyco-persicum esculentum var. Stirling Castle to Form 1 are outstanding”
e7“the failure of the expression of the inherent resistance of this variety during midwinter at Toronto is due largely to the reduced light experience of plants grown at this time”
Title
THE PARASITISM OF CLADOSPORIUM FULVUM COOKE AND THE GENETICS OF RESISTANCE TO IT
Arthur N. Langford Canadian Journal of Research/Canadian journal of research 1937. doi:10.1139/cjr37c-008
Other claims from this paper (12)
- Observation Four physiologic forms of Cladosporium fulvum were differentiated by differences in pathogenicity on tomato.
- Observation Saltant strains of Cladosporium fulvum were isolated repeatedly from cultures arising from single one-celled spores.
- Observation Cladosporium fulvum reactions on tomato form four main classes: complete susceptibility, two types of partial resistance, and immunity.
- Observation The reaction between pure lines of tomato and the fungus is plastic.
- Observation Environmental conditions cause variations in each of the four tomato reaction types to Cladosporium fulvum.
- Observation Seasonal fluctuations in the reaction of Lycopersicon esculentum var. Stirling Castle to physiologic Form 1 are outstanding.
- Mechanism Failure of plants to support sporulation of Cladosporium fulvum is caused by the low relative humidity in the greenhouses.
- Observation The Red Currant tomato carries an independently segregating dominant factor that governs resistance to all four forms of Cladosporium fulvum.
- Observation Resistance of Stirling Castle to Cladosporium fulvum Forms 1 and 3 is due to another dominant factor.
- Observation A recessive lutescence factor in the homozygous condition modifies the main reaction types of tomato to Cladosporium fulvum.
- Observation The recessive lutescence factor produces small inconspicuous infection spots on genetically immune tomato plants, whose growth is arrested soon after symptoms appear.
- Observation Three resistance factors of tomato were located on MacArthur chromosome maps by linkage studies.