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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.
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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(2): 2829-2838
DOI: https://doi.org/10.20546/ijcmas.2020.902.322


Cultural and Pathogenic Variability of the Different Isolates of Rhizoctonia solani Causing Root Rot of Cotton Collected from Rajasthan
Ramniwas Yadav1*, Kalpana Yadav3, Sushila Choudhary1, Shankar Lal Yadav4 and R. N. Bunker2
1Department of Plant Pathology, RARI, Durgapura, Jaipur, India
2Department of Plant Pathology, Rajasthan College of Agriculture, MPUAT, Udaipur – 313001, India
3Department of Plant Pathology, Rajasthan College of Agriculture, India
4Department of Plant Pathology, SKNAU, Jobner (Jaipur), India
*Corresponding author
Abstract:

The present study was undertaken on integrated management of root rot of cotton caused by Rhizoctonia solani to know the disease incidence; survey was carried out during 2017 in 18 villages of different six cotton growing district viz., Udaipur, Hanumangarh, Sri Ganganagar, Chittorgarh, Banswara and Dungarpur. Cultural and morphological variability of each isolates was tested under laboratory condition to find out the aggressiveness of the pathogens (isolates) and results find out that isolate SNG Rs-03 from Sri Ganganagar was the most virulent compare to other isolates. Isolate of Sri Ganganagar (SNS Rs-03) had 90 mm growth diameter (fast growing) with cottony white growth, aerial at centre with zonation, abundant and submerged sclerotia production. Among the different isolates of R. solani, sclerotia of CHT Rs-04 were the largest in size measuring 1.8 (1.5-2.0) × 1.2 (0.9-1.4) mm, Pathogenic variability and disease symptomology among six isolates was test on cotton cultivar “Jai BG-II” growing in cage house and results observed that isolate from Sri Ganganagar (SNG Rs-03) highly aggressive with high degree of symptoms.


Keywords: Rhizoctonia solani, Sclerotia, Morphology, Pathogenic variability, Cultural characters, etc.
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How to cite this article:

Ramniwas Yadav, Kalpana Yadav, Sushila Choudhary, Shankar Lal Yadav and Bunker, R. N. 2020. Cultural and Pathogenic Variability of the Different Isolates of Rhizoctonia solani Causing Root Rot of Cotton Collected from Rajasthan.Int.J.Curr.Microbiol.App.Sci. 9(2): 2829-2838. doi: https://doi.org/10.20546/ijcmas.2020.902.322