Abstract Volume:4 Issue-10 Year-2016 Original Research Articles
|Online ISSN : 2347 - 3215
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2Professor, Department of PG, Studies and Research in Applied Botany, Kuvempu University, Jnana Shyadri, Shankaraghatta-577451, Shivamogga, Karnataka India
Niger is commonly called “birdseed”. It is important minor, edible, traditional oil seed crop in India. The crop is affected by number of diseases. Among them leaf blight and leaf spot caused by Alternaria porri, the disease reduces the seed germination and yield up to 40-40%. The present study concentrated on detection and seed transmission of A. porri in Niger seeds during kharif seasons-2010-2011. A total of 132 seed samples were collected from farmers, retail shops, fields and APMC markets and were subjected to SBM, PDA, Water agar and 2,4,D methods. Five seed samples showing higher incidence of A. porri and other fungi in SBM were selected for seed to seedling transmission of the pathogen. The results revealed that the kharif - 2010 shows A. porri (33-52%) in the SBM method, PDA (11-25%), Water agar (6-15%) and 2,4-D (9-18%) respectively. The collected seed samples, fields and farmer’s samples show a higher incidence of A. porri and other fungi. The SBM method is more superior for isolating the A. porri and other fungi than PDA, water agar and 2,4, D methods. The transmission of A. porri was (12.6%) in kharif 2010. In kharif 2011, the transmission was (23.2%) in all the five seed samples. The present study reveals that the disease transmission is more during kharif-2011 season than 2010. The A. porri is a causal agent of leaf spot and leaf blight disease of Niger crop.
How to cite this article:Nagaraja, O., and Krishnappa, M. 2016. Detection and Seed Transmission of Alternaria porri in Niger.Int.J.Curr.Res.Aca.Rev. 4(10): 66-74