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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(9): 3300-3306
DOI: https://doi.org/10.20546/ijcmas.2020.909.410


Morphological, Cultural and Pathological Variation of Alternaria alternata causing Leaf Spot of Niger
Archana W. Shingne*, Ashwini R. Bagade, Punam N. Usendi and G. K. Giri
Department of Plant Pathology, Dr.Panjabrao Deshmukh Krishi Vidyapeeth,
Akola- (M.S.), India
*Corresponding author
Abstract:

Leaf spot disease (Alternaria alternata) causes severe foliar damage to niger crop. The isolates of A.alternata were collected from different location and tested for their variability in term of morphological, cultural and pathological variation viz., growth rate, colony colour, aerial mycelium colour, growth pattern, sporulation, conidial size, conidial sepation. In case of growth rate Aa1 and Aa2 was observed very fast growing it cover 70-73 mm growth within 7 days of inoculation on PDA media. Among the five isolates different colony colour and aerial mycelium colour was observed. The variation in mycelial growth pattern was observed in Aa2 isolate growing with circular pattern and other four show irregular growth pattern. In respect of sporulation abundant sporulation was observed in Aa2 show more than 30 spore in single microscopic field. In case of conidial size maximum conidial length (41.10) was noticed in Aa5 and breadth (11.66) in Aa1. The Maximum number of transverse septa were observed in Aa5 (4-8) and longitudinal septa in Aa1 and Aa2 (0-3). In case of pathogenicity Aa2 isolates was most virulent than other isolates of Alteranria alternata.


Keywords: Alternaria alternata, Niger, Guizotia abyssinica, Leaf spot, Cultural and Morphological characterization
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How to cite this article:

Archana W. Shingne, Ashwini R. Bagade, Punam N. Usendi and Giri, G. K. 2020. Morphological, Cultural and Pathological Variation of Alternaria alternata causing Leaf Spot of Niger.Int.J.Curr.Microbiol.App.Sci. 9(9): 3300-3306. doi: https://doi.org/10.20546/ijcmas.2020.909.410