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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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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Index Copernicus ICV 2017: 100.00
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Int.J.Curr.Microbiol.App.Sci.2018.7(2): 355-366
DOI: https://doi.org/10.20546/ijcmas.2018.702.047


Variability in Bipolaris sorokiniana Causing Spot Blotch in Wheat (Triticum aestivum L.) in Jammu Sub-Tropics
Manmohan Singh1, S.K. Singh1*, V.B. Singh3, A.K. Singh1, Sachin Gupta1, Ranbir Singh1, V.K. Razdan1, Anil Gupta1, Uma Shankar2 and A.K. Singh2
1Division of Plant Pathology, SKUAST of Jammu-180009, India
2Division of Entomology, SKUAST of Jammu-180009, India
3RRSS, Raya, SKUAST of Jammu-181143, India
*Corresponding author
Abstract:

Spot blotch in wheat (Triticum aestivum L.) is mainly caused by Bipolaris sorokiniana (Sacc.) Shoem in India and south Asian countries and inflected losses in yield up to 50 per cent. The isolates of B. Sorokiniana (BS1 to BS10) isolated from blighted leaf samples collected from different part of Jammu sub-tropics. Cultural and morphological variability of B. sorokiniana isolates exhibited that the colonies were effuse grey-white to effuse black and velvety-white mycelial growth with regular to irregular margins. The colour of colonies varied from grey to dark brown and white to light grey. The number of septation in isolates ranged from 3.9 to 6.3 and spore size ranged from 35.07 to 60.53µm in length and 13.20 to 17.60µm in breadth. The shape of the spore was elliptical, slight curved and straight with tapered end. The isolates of B. sorokiniana later spray (inoculated) on seedlings of a differential set of wheat genotypes viz., Sonalika, PBW-343, HD 2733, PBW 2967 and PBW 660. On the basis of host pathogen interaction, isolates BS2 and BS9 were categorised as highly virulent, whereas isolates BS7 and BS10 as least virulent. However, isolates BS2, BS3, BS4, BS5, BS6 and BS8 were categorized as a moderately virulent.


Keywords: Bipolaris sorokiniana, Wheat (Triticum aestivum L.)
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How to cite this article:

Manmohan Singh, S.K. Singh, V.B. Singh, A.K. Singh, Sachin Gupta, Ranbir Singh, V.K. Razdan, Anil Gupta, Uma Shankar and Singh, A.K. 2018. Variability in Bipolaris sorokiniana Causing Spot Blotch in Wheat (Triticum aestivum L.) in Jammu Sub-Tropics.Int.J.Curr.Microbiol.App.Sci. 7(2): 355-366. doi: https://doi.org/10.20546/ijcmas.2018.702.047