Abstract
Abstract Thirty Alternaria brassicae (Berk.) Sacc. isolates from diverse geographical locations of India were studied for pathogenic variability on seed, cotyledon and true leaves of Brassica species. Seed germination was reduced maximum by isolate BAB‐39 in Brassica juncea cultivar Varuna (22.1%), Brassica rapa var. Toria cultivar PT‐303 (12%), Brassica carinata cultivar Kiran (12%), Brassica napus cultivar GSL‐1 (11%) and tolerant source of B. juncea genotype PHR‐2 (7%), although least by isolate BAB‐49. Maximum lesion size on leaf was recorded in B. juncea cultivar Rohini (11.2, 16.5 and 16.8 mm) with isolates BAB‐09 (Pantnagar), BAB‐19 (Bharatpur) and BAB‐39 (Kangra), respectively, and categorized as highly virulent, while minimum lesion size of 3.2, 3.7 and 3.8 mm was observed with isolates BAB‐47 (Tonk), BAB 49 (Jobner) and BAB 04 (Kamroop), respectively, considered the weak isolates. On B. alba , BAB‐09, BAB‐19 and BAB‐39 isolates caused maximum lesion size of 3.7, 3.8 and 3.9 mm, respectively, even though it showed maximum tolerance. In both seed and cotyledon inoculation method, the per cent Alternaria blight severity above 80% was observed with isolate of BAB‐39 (91.5%), BAB‐19 (89.0%), BAB‐09 (85.5%) and least in isolate BAB‐49 (34.0%). Brassica seed, cotyledon and leaf showed the similar positive response for categorizing A . brassicae isolates as virulent and avirulent. This information could be used to the development and assessment of resistant brassica germplasm, especially with A. brassicae populations exhibiting increased virulence.
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Claims 16
Claim · model-written summary
BAB‐39 maximally reduced germination of Brassica juncea cultivar Varuna by 22.1%.
- Taxon
- Brassica juncea
Brassica junceae0 - Material
- Varunae0
- Treatment
- isolate BAB‐39e0
- Interactor
- Alternaria brassicae
_Sacc._Symptoms_on_cabbage.JPG?width=60)
Alternaria brassicaet0pathogen - Outcome
- Seed germinatione0
- Direction
- reducede0
- Value
- 22.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Sacc._Symptoms_on_cabbage.JPG?width=500)
Verbatim
e0“Seed germination was reduced maximum by isolate BAB‐39 in Brassica juncea cultivar Varuna (22.1%)”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐39 maximally reduced germination of Brassica rapa var. Toria cultivar PT‐303 by 12%.
- Taxon
- Brassica rapa var. Toria
Brassica rapae0 - Material
- PT‐303e0
- Treatment
- BAB‐39e1
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- Seed germinatione1
- Direction
- reducede1
- Value
- 12%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brassica rapa var. Toria cultivar PT‐303 (12%)”
e1“Seed germination was reduced maximum by isolate BAB‐39”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐39 reduced germination of Brassica carinata cultivar Kiran by 12%.
- Taxon
- Brassica carinata
Brassica carinatae0 - Material
- Kirane0
- Treatment
- BAB‐39e1
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- Seed germinatione1
- Direction
- reducede1
- Value
- 12%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brassica carinata cultivar Kiran (12%)”
e1“Seed germination was reduced maximum by isolate BAB‐39”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐39 reduced germination of Brassica napus cultivar GSL‐1 by 11%.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Material
- GSL‐1e0
- Treatment
- BAB‐39e1
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- Seed germinatione1
- Direction
- reducede1
- Value
- 11%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Brassica napus cultivar GSL‐1 (11%)”
e1“Seed germination was reduced maximum by isolate BAB‐39”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐39 reduced germination of B. juncea genotype PHR‐2 by 7%.
- Taxon
- B. junceaBrassica junceae0
- Material
- PHR‐2e0
- Treatment
- BAB‐39e1
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- Seed germinatione1
- Direction
- reducede1
- Value
- 7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tolerant source of B. juncea genotype PHR‐2 (7%)”
e1“Seed germination was reduced maximum by isolate BAB‐39”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐49 caused the least germination reduction.
- Material
- BAB‐49e0
- Interactor
- Alternaria brassicaeAlternaria brassicaet1pathogen
- Outcome
- leaste0
BrassicaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although least by isolate BAB‐49”
t0“Brassica Species”
t1“Alternaria brassicae”
Claim · model-written summary
BAB‐09 caused an 11.2 mm lesion on B. juncea cultivar Rohini.
- Taxon
- B. junceaBrassica junceae0
- Material
- Rohinie0
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- lesion size on leafe0
- Direction
- Maximume0
- Value
- 11.2e0
- Qualifier
- BAB‐09e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum lesion size on leaf was recorded in B. juncea cultivar Rohini (11.2, 16.5 and 16.8 mm) with isolates BAB‐09 (Pantnagar), BAB‐19 (Bharatpur) and BAB‐39 (Kangra), respectively”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐19 caused a 16.5 mm lesion on B. juncea cultivar Rohini.
- Taxon
- B. junceaBrassica junceae0
- Material
- Rohinie0
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- lesion size on leafe0
- Direction
- Maximume0
- Value
- 16.5e0
- Qualifier
- BAB‐19e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum lesion size on leaf was recorded in B. juncea cultivar Rohini (11.2, 16.5 and 16.8 mm) with isolates BAB‐09 (Pantnagar), BAB‐19 (Bharatpur) and BAB‐39 (Kangra), respectively”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐39 caused a 16.8 mm lesion on B. juncea cultivar Rohini.
- Taxon
- B. junceaBrassica junceae0
- Material
- Rohinie0
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- lesion size on leafe0
- Direction
- Maximume0
- Value
- 16.8 mme0
- Qualifier
- BAB‐39e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum lesion size on leaf was recorded in B. juncea cultivar Rohini (11.2, 16.5 and 16.8 mm) with isolates BAB‐09 (Pantnagar), BAB‐19 (Bharatpur) and BAB‐39 (Kangra), respectively”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐47, BAB 49 and BAB 04 were considered weak isolates with minimum lesion sizes.
- Interactor
- Alternaria brassicaeAlternaria brassicaet1pathogen
- Outcome
- minimum lesion sizee0
- Direction
- minimume0
- Value
- 3.2, 3.7 and 3.8 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“minimum lesion size of 3.2, 3.7 and 3.8 mm was observed with isolates BAB‐47 (Tonk), BAB 49 (Jobner) and BAB 04 (Kamroop), respectively, considered the weak isolates”
t0“Brassica Species”
t1“Alternaria brassicae”
Claim · model-written summary
BAB‐09, BAB‐19 and BAB‐39 produced maximum lesions on B. alba, which showed maximum tolerance.
- Taxon
- B. albae0
- Interactor
- Alternaria brassicaeAlternaria brassicaet0pathogen
- Outcome
- maximum lesion sizee0
- Direction
- maximume0
- Value
- 3.7, 3.8 and 3.9 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On B. alba , BAB‐09, BAB‐19 and BAB‐39 isolates caused maximum lesion size of 3.7, 3.8 and 3.9 mm, respectively, even though it showed maximum tolerance”
t0“Alternaria brassicae”
Claim · model-written summary
BAB‐39 produced 91.5% Alternaria blight severity in seed and cotyledon inoculation.
- Interactor
- Alternaria brassicaeAlternaria brassicaet1pathogen
- Outcome
- Alternaria blight severitye0
- Direction
- abovee0
- Value
- 91.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the per cent Alternaria blight severity above 80% was observed with isolate of BAB‐39 (91.5%)”
t0“Brassica Species”
t1“Alternaria brassicae”
Claim · model-written summary
BAB‐19 produced 89.0% Alternaria blight severity.
- Interactor
- Alternaria brassicaeAlternaria brassicaet1pathogen
- Outcome
- Alternaria blight severitye1
- Value
- 89.0%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BAB‐19 (89.0%)”
e1“the per cent Alternaria blight severity above 80%”
t0“Brassica Species”
t1“Alternaria brassicae”
Claim · model-written summary
BAB‐09 produced 85.5% Alternaria blight severity.
- Interactor
- Alternaria brassicaeAlternaria brassicaet1pathogen
- Outcome
- Alternaria blight severitye1
- Value
- 85.5%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BAB‐09 (85.5%)”
e1“the per cent Alternaria blight severity above 80%”
t0“Brassica Species”
t1“Alternaria brassicae”
Claim · model-written summary
BAB‐49 had the lowest Alternaria blight severity at 34.0%.
- Interactor
- Alternaria brassicaeAlternaria brassicaet1pathogen
- Outcome
- Alternaria blight severitye1
- Direction
- leaste0
- Value
- 34.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“least in isolate BAB‐49 (34.0%)”
e1“the per cent Alternaria blight severity above 80%”
t0“Brassica Species”
t1“Alternaria brassicae”
Claim · model-written summary
Seed, cotyledon and leaf assays similarly categorized isolates as virulent or avirulent.
- Interactor
- A . brassicaeAlternaria brassicaee0pathogen
- Outcome
- similar positive response for categorizing A . brassicae isolates as virulent and avirulente0
- Comparator
- seed, cotyledon and leafe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brassica seed, cotyledon and leaf showed the similar positive response for categorizing A . brassicae isolates as virulent and avirulent”