Pathogenic and Molecular Variability of Aspergillus niger Isolates Causing Collar Rot Disease in Groundnut

Divya Rani, V and Sudini, H and Narayan Reddy, P and Naga Mangala, U and Vijay Krishna Kumar, K (2018) Pathogenic and Molecular Variability of Aspergillus niger Isolates Causing Collar Rot Disease in Groundnut. International Journal of Pure & Applied Bioscience, 6 (1). pp. 840-848. ISSN 23207051

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Pathogenic variability studies of 26 isolates of collar rot pathogen (Aspergillus niger) of groundnut collected from different districts of Telangana and Andhra Pradesh states were conducted under greenhouse conditions by using two groundnut cultivars TMV-2 and JL-24. The mean seedling mortality ranged from 29.7 per cent (MBNRAn-1 (Palkapally)) to 94.4 per cent (ATPAn-1 (Jogannapet)). All the isolates of A. niger showed differential reaction with regard to seedling mortality on JL-24 and TMV-2 cultivars. Similarly genetic relatedness among eight virulent isolates (two isolates from each district) of A. niger from groundnut was assessed by using RAPD analysis. The similarity index values among the A. niger isolates varied from 0.571 (between WGL An-2 and CHT An-3) to 0.229 (between MBNR An-3 and WGL An-2).

Item Type: Article
Divisions: Research Program : Asia
Uncontrolled Keywords: Groundnut, Collar rot, Aspergillus niger, Pathogenic variability, Molecular variability
Subjects: Mandate crops > Groundnut
Others > Plant Pathology
Others > Plant Disease
Depositing User: Mr Ramesh K
Date Deposited: 16 Apr 2018 06:35
Last Modified: 20 Dec 2018 06:45
Official URL:
Acknowledgement: I would like to express my deep and sincere gratitude to Chairman, Co-Chairman and all my advisory committee and other Teaching staff members and friends in the department for their support during the course of study. I also wish to express my profound sense of gratitude to Government of Telangana and ICRISAT for the financial support in the form of stipend.
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