Scanning electron microscopic studies of Beauveria bassiana against Lipaphis erysimi Kalt
Journal Title: Journal of Applied and Natural Science - Year 2017, Vol 9, Issue 1
Abstract
This work was aimed to identify the LC50 of the indigenous fungal isolates for controlling L. erysimi infesta-tion in mustard aphid besides to probe the mechanism of action of the local isolates and comparison of the efficacy with the reference culture and commercial formulation ‘Mycojaal’. Three isolates of entomopathogenic fungi Beauveria bassiana were tested for infection on nymph of Lipaphis erysimi Kalt. using scanning electron microscopy (SEM) to record any variation. The SEM revealed adhesion of spores of B.bassiana followed by penetration of L.erysimi nymph surface. It was observed that all Beauveria isolates showed little variation with respect to penetration and adhesion at different time intervals. Further, lethal concentration (LC50) values of B. bassiana isolates against L. erysimi was recorded and was lowest (0.05x107 spores/ml) in B. bassiana MTCC 4495 and highest (0.11.X107 spores/ml) was recorded in native isolate F10 after 120 hours of treatment. The study has established the need for the isolation and evaluation of the indigenous Beauveria isolate. Moreover, it also exhibited the efficacy of the reference and commercially available biocontrol agents.
Authors and Affiliations
Tanvi Sharma, Neelam Joshi, Anu Kalia
Keywords
Related Articles
- EP ID EP286501
- DOI 10.31018/jans.v9i1.1214
- Views 93
- Downloads 0
Weed control efficiency and weed index as influenced by weed management practices in machine transplanted rice (Oryza sativa L.)
Field experiment on effect of different weed management practices in machine transplanted rice (Oryza sativa L.) was conducted at ARS, Gangavathi, University of Agricultural Sciences, Raichur, Karnataka during kharif, 20...
Biometric properties of onion seedlings relevant to the development of onion seedling transplanter
A study was conducted to investigate biometric properties of seedlings of three common varieties of onion viz. Pusa Red, Set-126 and Pusa Ridhi (50, 60, 70 days old). The parameters determined were weight of seedling wit...
Effect of botanicals and insecticides seed treatment and containers on seed longevity of black gram under natural ageing conditions
Good storage is the basic requirement in seed production programme as maintenance of high seed viability and vigour from harvest to planting is of utmost importance in a seed production programme. Therefore, inexpensive,...
Soil evaporation studies using mini-lysimeters under differently established rice-wheat cropping sequence in Punjab, India
Present investigations were carried out in rice-wheat cropping sequence as a whole including the intervening period under divergent establishment methods from 2012-14 at experimental farm of Punjab Agricultural Universit...
Role of vitamin C against bifenthrin induced oxidative damage in lungs of Wistar rats
The aim of present study was to unravel the protective role of vitamin C on oxidative stress parameters in lung homogenates of bifenthrin intoxicated rats. Rats were divided into four groups. Group I served as control wh...