ISSN : 0975-5276
EISSN : 0975-9174
M. RAVEENDRA REDDY1*, S. ADITHYA2, M.K. SHIVAPRAKASH3
1Scientist (Microbiology), Regional Agricultural Research Station, Tirupati, 517502, Acharya N. G. Ranga Agricultural University, Lam, Guntur, 522034, Andhra Pradesh
2Department of Agricultural Microbiology, University of Agricultural Sciences, GKVK, Bengaluru, 560 065, India
3Department of Agricultural Microbiology, University of Agricultural Sciences, GKVK, Bengaluru, 560 065, India
* Corresponding Author : raveendra56@gmail.com
Received : 02-06-2019 Accepted : 26-06-2019 Published : 30-06-2019
Volume : 11 Issue : 6 Pages : 1592 - 1597
Int J Microbiol Res 11.6 (2019):1592-1597
Keywords : Endophytic bacteria, Foxtail millet, Sclerotium rolfsii, Antagonistic activity
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Agricultural Microbiology, University of Agricultural Sciences, GKVK, Bengaluru, 560 065, India. Authors are also thankful to Regional Agricultural Research Station, Tirupati, 517502, Acharya N. G. Ranga Agricultural University, Lam, Guntur, 522034, Andhra Pradesh
Author Contribution : All authors equally contributed
An investigation was carried out to study the efficiency of bacterial endophytes isolated from small millets for biocontrol of Sclerotium rolfsii, a causal organism of sheath blight in foxtail millet (Setaria italica variety Si A 3085 TL) grown in seedling trays under glass house conditions. Out of the total isolates obtained from small millets, 12 isolates inhibited mycelial growth of Sclerotium rolfsii. Isolates, KMS5 and KMS1 recorded highest antifungal activity (83.33 % and 62.22 % inhibition respectively) and KMS1 took 10.75 and KMS5 took 10.85 days for 50% germination compared to control (13.00 days) which received only pathogen. Further, lowest pre emergence disease incidence was observed with KMS5 (18.33 %) followed by KMS1 (18.75 %) whereas control with pathogen recorded highest pre emergence disease incidence (54.16). Least post emergence disease (13.91) and biocontrol efficiency (72.22 %) was observed with KMS5. Apart from showing antagonistic activity, KMS5 has recorded maximum root length (16.90 cm), shoot length (12.30 cm), root dry weight (0.157 g), shoot dry weight (0.769 g), and maximum seedling vigour index (2384.47) followed by KMS1 isolate.
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