Follow
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
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

Login as a Reviewer

Indexed in



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

See Guidelines to Authors
Current Issues

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(12): 323-329
DOI: https://doi.org/10.20546/ijcmas.2020.912.042


Survey for Purple Blotch Disease of Onion (Allium cepa L.) in Cited by Alternaria porri (Ellis) Cifin Different Regions of Tamil Nadu
R. T. Nivithaa Shree1, K. Kalpana1*, E. G. Ebenezar2, M. Theradimani1, S. Thiruvudainambi1 and S. Vellaikumar3
1Department of Plant Pathology,
3Department of Biotechnology, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, Tamil Nadu, India
2Department of Plant Pathology, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Killikulam, Tamil Nadu, India
*Corresponding author
Abstract:

Onion (Allium cepa L.) is an important bulbous vegetable crop grown all over the world and known for its pungency and flavor. Onion production is affected by various diseases. Among the diseases, purple blotch caused by Alternaria porri (Ellis) Cif is one of the major destructive diseases and cause damage to both foliage production and also bulb yield. A survey was carried out in major onion growing areas of Tamil nadu viz., Dindugal, Permabalur, Theni, Madurai, Salem, Dharmapuri and Krishnagiri districts. The highest purple blotch severity of 60.8 percent disease index (PDI) was observed at Andipatti village in Theni district, less severity of 29.5 percent PDI was noticed in Periyamuthoor area of Krishnagiri district. Isolation was made from infected onion leaves which showed prominent purple blotch symptoms. Pure culture of fungal pathogen (A. porri) was obtained and its pathogenicity was proved on onion plants. The isolated pathogen was confirmed as Alternaria porri (Ellis) Cif. based on the fungal culture morphology and its pathogenicity on onion plants.


Keywords: Onion, Purple blotch, A. porri, Pathogenicity etc.
Download this article as Download

How to cite this article:

Nivithaa Shree, R. T., K. Kalpana, E. G. Ebenezar, M. Theradimani, S. Thiruvudainambi and Vellaikumar, S. 2020. Survey for Purple Blotch Disease of Onion (Allium cepa L.) in Cited by Alternaria porri (Ellis) Cifin Different Regions of Tamil Nadu.Int.J.Curr.Microbiol.App.Sci. 9(12): 323-329. doi: https://doi.org/10.20546/ijcmas.2020.912.042