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Tamil Nadu Agricultural University Coimbatore, INDIA

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DIVERSITY IN THE VIRUS YIELD OF HELICOVERPA ARMIGERA NUCLEAR POLYHEDROSIS VIRUS (HANPV) ISOLATES*

D.N. Kambrekar1, K.A. Kulkarni

Affiliations

¹Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad-580 005, India.

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Cite article:- Kambrekar1 D.N., Kulkarni K.A. (2025). DIVERSITY IN THE VIRUS YIELD OF HELICOVERPA ARMIGERA NUCLEAR POLYHEDROSIS VIRUS (HANPV) ISOLATES*. Indian Journal of Agricultural Research. 44(1): 8 - 13. doi: .

ABSTRACT

An experiment was conducted to assess the polyhedral occlusion body (POB) yielding capacity of
different isolates in Helicoverpa armigera (Hubner). The average POB yield varied between 8.91X1010
to 2.42X1010 POBs. Gulbarga isolate excelled over other isolates in producing maximum yield which
recorded an average of 8.91X1010 POBs followed by Coimbatore isolate with 7.51X1010 POBs. Further,
Gulbarga isolate recorded four times more POBs yield compared to Kalpavruksha isolate as evident
from the total viral yield in terms of LE. The average POB yield per larvae ranged from 2.11X109 to
1.21X109 POBs. Gulbarga isolate excelled over other isolates in producing highest number of POBs
per larvae (2.11X109 POBs), followed by Coimbatore isolate (1.87X109POBs). The average number of
larvae to yield one larval equivalent ranged between 7.07 to 11.94 larvae. Gulbarga isolate required
on an average 7.09 virosed larvae to produce 6.00X109 POBs as against BPL isolate which required
on an average 11.94 larvae to yield the same amount of virus.

KEYWORDS

REFERENCES

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