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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2017) [Effective from January 1, 2017]For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2015: 85.95
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95
For more details click here
journals IJCMAS
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(3): 2414-2419
DOI: https://doi.org/10.20546/ijcmas.2017.603.275


Insect Bioassay of Beauveria bassiana against Crawler Stage of Papaya Mealybug Paracoccus marginatus under Laboratory Condition
Indirakumar*, J.S. Kennedy and M. Devi
Department of Agricultural Entomology, Tamil Nadu Agricultural University,Coimbatore, Tamil Nadu, India
*Corresponding author
Abstract:

Six strains of Beauveria bassiana were isolated from different sources collected from different places of Tamil Nadu and tested their efficacy under laboratory condition against crawler stages of papaya mealybug by insect dip bioassay method. The results revealed that B. bassiana strains, UPI (Bb) and ANR (Bb) were recorded the lowest LC50 values of 2.11 x106, 2.37x107 spores ml-1 respectively which were indicated more virulence compared to other strains. The LC50 values of rest of the strains of B. bassiana viz., AVI (Bb), KPI (Bb), PLR (Bb), and TMR (Bb) were 6.81x107, 9.28 x107, 9.89x107 and 1.24x108 spores ml-1. At the highest concentration of 1x108 spores ml-1, the median LT50 values for different strains of B. bassiana viz., UPI (Bb), ANR (Bb) , AVI (Bb), KPI (Bb), PLR (Bb) and TMR (Bb) were 3.71, 5.97, 7.72, 8.71, 9.25 and 9.71 days respectively. Median lethal values were found to be inversely proportional to the spore concentration of B. bassiana


Keywords: Paracoccus marginatus, Beauveria bassiana, Median lethal dose
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How to cite this article:

Indirakumar, K., J.S. Kennedy and Devi, M. 2017. Insect Bioassay of Beauveria Bassiana against Crawler Stage of Papaya Mealybug Paracoccus marginatus under Laboratory Condition.Int.J.Curr.Microbiol.App.Sci. 6(3): 2414-2419. doi: https://doi.org/10.20546/ijcmas.2017.603.275