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STUDIES ON INTERACTION BETWEEN ENDOPHYTIC Beauveria bassiana (Balsamo) AND MAIZE STEM BORER, Chilo partellus (Swinhoe) (CRAMBIDAE: LEPIDOPTERA)

KrishiKosh

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Title STUDIES ON INTERACTION BETWEEN ENDOPHYTIC Beauveria bassiana (Balsamo) AND MAIZE STEM BORER, Chilo partellus (Swinhoe) (CRAMBIDAE: LEPIDOPTERA)
 
Creator BHAGYASREE, S N
 
Contributor THAPPAIAH, M
 
Subject costs, farming systems, crops, manpower, economics, physical control, tillage equipment, productivity, intercropping, land resources
 
Description Beauveria bassiana is a highly effective entomopathogen for a
wide range of insect pests, soliciting its commercialisation as a fungal
biopesticide by various commercial companies. Laboratory and screen
house studies have revealed greater potential for this
entomopathogenic fungus to use against maize stem borer (Chilo
partellus) in maize plants for two months to the extent of > 80 percent
following seed treatment or soil drench with aqueous suspension of
1×109 conidia/ml. Colonisation by B. bassiana was not affected the
plant growth and even when elevated B. bassiana doses were used,
growth was not reduced. Most importantly, when used as an
endophyte persistence of B. bassiana inside the stem provides a
promising delivery system to reduce dead heart caused by the stem
borer to the extent of 70 percent. Biochemical results shows that
colonisation of B. bassiana imparted a clear impact to make the tissue
less susceptible to C. partellus by changing the titre of total sugar,
phenol and proteins. The reduced C:N ratio in endophytic maize plant
also throws some light on the possibilities of developing some induced
systemic resistance to deter C. partellus infestation in endophytic
plant over control. So, exploiting the potentiality of B. bassiana as an
artificial endophyte could be a viable solution to reduce larval damage
inside the stem. Further, this may also help to overcome the adverse
biotic and abiotic stress on fungal bio-agents and unlikely farmer’s
need not to apply frequently as in common practice because of its self
perpetuating nature.
 
Date 2016-11-11T09:24:37Z
2016-11-11T09:24:37Z
2013-08-14
 
Type Thesis
 
Identifier TH-10514
http://krishikosh.egranth.ac.in/handle/1/85029
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences GKVK, Bangalore