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Pathogenic variability within Indian Alternaria brassicae isolates using seed, cotyledon and leaf of Brassica species

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Title Pathogenic variability within Indian Alternaria brassicae isolates using seed, cotyledon and leaf of Brassica species
Not Available
 
Creator Meena PD, Riteka Gupta, HS Meena, Pankaj Sharma and S Jambhulkar
 
Subject Alternaria brassicae, isolates, oilseed brassica, pathogenic response, variability
 
Description Not Available
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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Date 2018-10-30T10:12:24Z
2018-10-30T10:12:24Z
2017-07-01
 
Type Journal
 
Identifier Meena PD, Riteka Gupta, HS Meena, Pankaj Sharma and S Jambhulkar. 2017. Pathogenic variability within Indian Alternaria brassicae isolates using seed, cotyledon and leaf of Brassica species. Journal of Phytopathology 165: 238-248. doi: 10.1111/jph.12555.
doi: 10.1111/jph.12555.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/8696
 
Language English
 
Relation Not Available;
 
Publisher J Phytopathol, Blackwell Verlag GmbH