Abstract
A disease of rape characterized by black spots on stems and pods and gray to black spots on the leaves, caused considerable damage to crops in Manitoba in the wet years 1955 and 1956. Alternaria brassicae (Berk.) Sacc. was the only pathogen isolated from infected leaves, stems, pods and seed. Sporulation of the fungus was greatest on a 10% alfalfa seed decoction agar medium. The fungus was pathogenic to seedlings and adult plants. Penetration into leaves was indirect through stomata. Inoculations in greenhouse and field experiments resulted in a higher percentage of shrunken seed and seed infestation by the fungus, and in lower yield and percentage germination of seed compared with those from uninoculated plants.
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Claims 9
Claim · model-written summary
Gray leaf spot damaged rape crops in Manitoba in wet 1955 and 1956.
- Taxon
- rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Organ / stage
- stems and podse0
- Outcome
- considerable damagee0
- Setting
- Manitobae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“A disease of rape characterized by black spots on stems and pods and gray to black spots on the leaves, caused considerable damage to crops in Manitoba in the wet years 1955 and 1956.”
Claim · model-written summary
Alternaria brassicae was the only pathogen isolated from infected rape tissue and seed.
- Taxon
- rapeBrassica napuse0e1
- Interactor
- Alternaria brassicae (Berk.) Sacc.
_Sacc._Symptoms_on_cabbage.JPG?width=60)
Alternaria brassicaee0e1pathogen
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Sacc._Symptoms_on_cabbage.JPG?width=500)
Verbatim
e0“Alternaria brassicae (Berk.) Sacc. was the only pathogen isolated from infected leaves, stems, pods and seed.”
e1“A disease of rape”
Claim · model-written summary
Alternaria brassicae sporulated most on 10% alfalfa seed decoction agar.
- Taxon
- rapeBrassica napuse0e1e2
- Interactor
- Alternaria brassicae (Berk.) Sacc.Alternaria brassicaee0e1e2pathogen
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sporulation of the fungus was greatest on a 10% alfalfa seed decoction agar medium.”
e1“Alternaria brassicae (Berk.) Sacc. was the only pathogen isolated from infected leaves, stems, pods and seed.”
e2“A disease of rape”
Claim · model-written summary
The fungus was pathogenic to seedlings and adult rape plants.
- Taxon
- rapeBrassica napuse0e1e2
- Interactor
- Alternaria brassicae (Berk.) Sacc.Alternaria brassicaee0e1e2pathogen
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fungus was pathogenic to seedlings and adult plants.”
e1“Alternaria brassicae (Berk.) Sacc. was the only pathogen isolated from infected leaves, stems, pods and seed.”
e2“A disease of rape”
Claim · model-written summary
The fungus entered rape leaves indirectly through stomata.
- Taxon
- rapeBrassica napuse0e1e2
- Interactor
- Alternaria brassicae (Berk.) Sacc.Alternaria brassicaee0e1e2pathogen
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Penetration into leaves was indirect through stomata.”
e1“Alternaria brassicae (Berk.) Sacc. was the only pathogen isolated from infected leaves, stems, pods and seed.”
e2“A disease of rape”
Claim · model-written summary
Inoculation increased the percentage of shrunken rape seed relative to uninoculated plants.
- Taxon
- rapeBrassica napuse0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculations in greenhouse and field experiments resulted in a higher percentage of shrunken seed and seed infestation by the fungus, and in lower yield and percentage germination of seed compared with those from uninoculated plants.”
e1“A disease of rape”
Claim · model-written summary
Inoculation increased rape seed infestation by the fungus.
- Taxon
- rapeBrassica napuse0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculations in greenhouse and field experiments resulted in a higher percentage of shrunken seed and seed infestation by the fungus, and in lower yield and percentage germination of seed compared with those from uninoculated plants.”
e1“A disease of rape”
Claim · model-written summary
Inoculation reduced rape yield relative to uninoculated plants.
- Taxon
- rapeBrassica napuse0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculations in greenhouse and field experiments resulted in a higher percentage of shrunken seed and seed infestation by the fungus, and in lower yield and percentage germination of seed compared with those from uninoculated plants.”
e1“A disease of rape”
Claim · model-written summary
Inoculation reduced germination of rape seed relative to uninoculated plants.
- Taxon
- rapeBrassica napuse0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculations in greenhouse and field experiments resulted in a higher percentage of shrunken seed and seed infestation by the fungus, and in lower yield and percentage germination of seed compared with those from uninoculated plants.”
e1“A disease of rape”
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See all 74 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.