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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(7): 1426-1431
DOI: https://doi.org/10.20546/ijcmas.2019.807.170


Evaluation of Pathogenicity of Four Different Alternaria brassicae Isolates on Three Brassica coenospecies
Prashant Yadav1, Zahoor Ahmed Mir1, Sajad Ali2 and Anita Grover1*
1ICAR - National Institute for Plant Biotechnology, New Delhi, India
2Centre of Research for Development, University of Kashmir, Jammu and Kashmir, India
*Corresponding author
Abstract:

Indian mustard (Brassica juncea) is the second most important edible oilseed crop in the country after soybean. Mustard is an important source of healthy edible oil in the northern states of the country viz., Uttar Pradesh, Rajasthan, Uttarakhand, Haryana, Punjab and Bihar. The production of edible oil in the country is lagging behind the growing demand by ever increasing population and therefore increasing its import. Preventing the loss by various biotic and abiotic stresses is one of the ways to increase the production of mustard oil. Among the various biotic stresses faced by mustard crop in the country, Alternaria blight caused by a necrotrophic fungal pathogen Alternaria brassicae is an important economic disease. To develop the disease-resistant cultivars, it is important to select the genotypes against most virulent pathogen. For this, we have studied the pathogenicity of four different isolates DEL, PNT, MRT and ND (named according to place of collection) of A. brassicae on three different Brassica coenospecies viz., B. juncea, Sinapis alba and Camelina sativa, having different degree of resistance against this pathogen. Highest pathogenicity was observed in PNT isolate of A. brassicae producing largest size lesion [1.23 cm (±0.24)] in B. juncea whereas, DEL isolate produced smaller size lesion [0.96 cm (±0.21)] at 12 days post inoculation. Highest number of secondary spots and distal infected leaves were observed with PNT [8.7(±1.7) and 5.1(±0.19) respectively]. C. sativa never produced any secondary infection or distal infected leaves against any isolate upto 12 dpi. These results concluded that among the four different A. brassicae isolates, the PNT isolate was highly pathogenic followed by ND and MRT isolate. The DEL isolate was found least pathogenic in B. juncea.


Keywords: Alternaria brassicae, Disease resistance, Mustard, Pathogenicity
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How to cite this article:

Prashant Yadav, Zahoor Ahmed Mir, Sajad Ali and Anita Grover. 2019. Evaluation of Pathogenicity of Four Different Alternaria brassicae Isolates on Three Brassica coenospecies.Int.J.Curr.Microbiol.App.Sci. 8(7): 1426-1431. doi: https://doi.org/10.20546/ijcmas.2019.807.170