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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 (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.2018.7(12): 3644-3657
DOI: https://doi.org/10.20546/ijcmas.2018.712.413


Etiology of Twister Disease Complex in Onion
Suresh Patil*, V.B. Nargund, K. Hariprasad, Gurudatth Hegde, S. Lingaraju and V.I. Benagi
Department of Plant Pathology, UAS, Dharwad, Karnataka, India
*Corresponding author
Abstract:

In recent years, twister disease of onion has become epidemic in coastal tract and other onion growing districts of Karnataka which caused heavy loss. Survey carried out during kharif and rabi/summer 2011-12 and 2012-13 revealed typical symptoms of the disease twisting of leaf, neck with blight as well as dieback (anthracnose), scanty root system with galls and showing fungal growth was noticed. Artificial inoculations of onion seedlings with Colletotrichum gloeosporioides, Fusarium oxysporum, Meloidogyne spp. alone and in combinations expressed twister disease symptoms. Metabolomic changes like increased total sugars and growth hormones (IAA and GA) were seen. Test for pathogenicity demonstrated that twister disease complex whereby the based on all these studies we have proposed a model disease cycle for this twister disease complex.


Keywords: Twister disease of onion, etiology, F.oxysporum, C. gloeosporioides, M. graminicola, IAA and GA, disease cycle
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How to cite this article:

Suresh Patil, V.B. Nargund, K. Hariprasad, Gurudatth Hegde, S. Lingaraju and Benagi, V.I. 2018.Int.J.Curr.Microbiol.App.Sci. 7(12): 3644-3657. doi: https://doi.org/10.20546/ijcmas.2018.712.413