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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 2019 - IJCMAS--ICV 2019: 96.39 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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
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(1): 740-747
DOI: https://doi.org/10.20546/ijcmas.2020.901.081


Temperature Adaptability and Disease Development Potentiality of Multi-Generation Isolates of Sclerotium rolfsii
Ritesh Kumar1,2*, Abhijeet Ghatak1 and A.P. Bhagat1
1Department of Plant Pathology, Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India
2Department of Plant Pathology, Bidhan Chandra Krishi Vishwavidyalaya, Mohanpur, Nadia, West Bengal, India
*Corresponding author
Abstract:

Sclerotium rolfsii, obtained from cucumber roots, grew up to 20 generations at 25°C and at 35°C to assess the effect of enhanced temperature on the growth pattern of the fungus. At 25°C, the isolates of early generations covered the entire plate (90 mm) on 120 h after inoculation. However, after the 8th generation, due to repeated isolation and inoculation, reduced mycelium growth observed and almost ceased after the 16th generation. At 35°C, the mycelium started to be visible after 96 h of inoculation but the growth found to be meagre. At this incubation temperature, mycelium attended the progress after 5th generation; a similar response noticed for the 5th to 15th-generation isolates. The adaptability in the growth of this fungus towards higher temperature shows its potential to survive in the changing environment as a result of climate change. Further, the comparison of pathogenicity between the 1st and 20th generation isolates was tested on moong (Vigna radiata). Across varieties, no effect of 1st generation-and 20th generation-isolate on collar rot disease development was noticed. But yielding a similar amount of disease by the 20th generation-isolate, which is resistant to elevated temperature, is indicating to take caution that should be implemented in future to make strategies against S. rolfsii.


Keywords: Collar rot, Disease, elevated temperature, Sclerotium rolfsii, Temperature adaptability
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How to cite this article:

Ritesh Kumar, AbhijeetGhatak and Bhagat, A.P. 2020. Temperature Adaptability and Disease Development Potentiality of Multi-Generation Isolates of Sclerotium rolfsii.Int.J.Curr.Microbiol.App.Sci. 9(1): 740-747. doi: https://doi.org/10.20546/ijcmas.2020.901.081