UGC Approved Journal no 63975(19)

ISSN: 2349-5162 | ESTD Year : 2014
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Published in:

Volume 7 Issue 5
May-2020
eISSN: 2349-5162

UGC and ISSN approved 7.95 impact factor UGC Approved Journal no 63975

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Published Paper ID:
JETIR2005284


Registration ID:
229478

Page Number

1056-1063

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Title

IN VITRO STUDY OF " The Rice Blast Caused By Pyriculuria Grisea "

Abstract

The present study was proposed with following objectives , Collection of diseased samples, isolation and identification of the causal agent. To determine the optimum conditions for the growth of the pathogen and development of the disease. To find out the efficacy of certain plant extracts, natural products and bio agents against Pyricularia grisea. To find out efficacy of eco friendly products against the growth and yield parameters of the host. It was found that maximum radial growth of mycelium of Pyricularia grisea was supported by potato dextrose agar (PDA) medium whereas, higher sporulation i.e 3.2x106 and 6.1x106 conidia/ml was produced on oat meal agar (OMA) medium and media M1 (Arachne grass + Sucrose + Oatmeal powder) respectively. Blast was artificially created at nursery stage under field conditions by spraying conidial suspension of P. grisea and covering of inoculated seedlings with perforated plastic bottles to maintain high relative humidity. At tillering stage disease was created artificially by inoculating plants with inoculum concentrations i.e 1x105 and 2x107 coinidia/ml. Inoculum concentration of 2x107 coinidia/ml resulted 83.0 per cent average leaf blast severity, whereas 1x105 conidia/ml resulted in 76.0 per cent average leaf blast severity as compared to control where average leaf blast severity recorded was 14.0 per cent. P. grisea produced characteristic rice blast symptoms on different weeds viz. Arachne racemosa, Digitaria sanguinalis, Dactyloctenuim aegyptiacum, Echinochloa crusgalli, Echinochloa colonum, Cyperus difformis and Cypreus iria. Studies on survival revealed that both infected seed and infected straw serve as source of survival but infected crop residue was found to serve as more efficient source for overwintering the inoculum as compared to seed.

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"IN VITRO STUDY OF " The Rice Blast Caused By Pyriculuria Grisea "", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 5, page no.1056-1063, May-2020, Available :http://www.jetir.org/papers/JETIR2005284.pdf

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2349-5162 | Impact Factor 7.95 Calculate by Google Scholar

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 7.95 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Cite This Article

"IN VITRO STUDY OF " The Rice Blast Caused By Pyriculuria Grisea "", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 5, page no. pp1056-1063, May-2020, Available at : http://www.jetir.org/papers/JETIR2005284.pdf

Publication Details

Published Paper ID: JETIR2005284
Registration ID: 229478
Published In: Volume 7 | Issue 5 | Year May-2020
DOI (Digital Object Identifier):
Page No: 1056-1063
Country: KRISHNA ( VIJAYWADA ), ANDHRA PRADESH, India .
Area: Science
ISSN Number: 2349-5162
Publisher: IJ Publication


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