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)
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Creator |
BHAGYASREE, S N
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Contributor |
THAPPAIAH, M
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Subject |
costs, farming systems, crops, manpower, economics, physical control, tillage equipment, productivity, intercropping, land resources
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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. |
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Date |
2016-11-11T09:24:37Z
2016-11-11T09:24:37Z 2013-08-14 |
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Type |
Thesis
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Identifier |
TH-10514
http://krishikosh.egranth.ac.in/handle/1/85029 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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