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Mukherjee, Avijit
- Biocontrol Potential of Bacteriocin (class IIa) and Pseudomonas fluorescens (BICC 602) on Lycopersicon esculentum (Tomato) Cv. Pusa Ruby Plant Infected with Root-Knot Nematode Meloidogyne incognita (Kofoid & White) Chitwood
Authors
1 Department of Zoology, Bankura Christian College, Bankura 722 101, West Bengal, IN
2 Parasitology Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, West Bengal, IN
Source
Indian Science Cruiser, Vol 31, No 2 (2017), Pagination: 46-53Abstract
The present study was carried out to establish the biocontrol potential of Bacteriocin Class IIa (BacIIa) compound and a plant growth promoting Rhizobacteria, Pseudomonas fluorescens BICC 602 on Lycopersicon esculentum (Tomato) Pusa Ruby variety infected with Meloidogyne incognita (Kofoid & White) Chitwood nematode. The result of in vitro laboratory bioassay showed that application of BacIIa is safe for second-stage juveniles (J2) of M. incognita. The result of phytotoxicity test showed that BacIIa treated plants did not exhibit any toxic effects. The result of in vivo bioassay test revealed that combined treatment of P. fluorescens and BacIIa increased growth of inoculated plants in terms of shoot length, shoot weight and ischolar_main length as compared with inoculated untreated plants. Application of BacIIa and P. fluorescens also showed reduction in ischolar_main gall number and number of nematode eggs in inoculated ischolar_mains. PAL activity increased in ischolar_mains of P. fluorescens treated and P. fluorescens: BacIIa combined treated plants. Root protein content was greater in inoculated untreated plants compared to treated groups.Keywords
Glass House Bioassay, Plant Growth Promoting Bacteria, PAL Activity, Root Gall.References
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- The Study of Zooplankton Community in Unmanaged Pond Ecosystem in Bankura District, West Bengal and the Effect of Temperature, pH, Dissolved O2, Free CO2 Level in the Community
Authors
1 Department of Zoology, Bankura Christian College, Bankura-722101, West Bengal, IN
Source
Indian Science Cruiser, Vol 31, No 5 (2017), Pagination: 26-31Abstract
The aim of this study was to determine the diversity of zooplankton in a local pond
ecosystem. Zooplankton plays a very important role in the food chain of pond ecosystem
and its diversity is one of the determinant of shaping the food chain. Its diversity will
ultimately decide the nature of the pond community. During our investigation in local
pond, we have gathered various types of zooplanktons like Cyclops, Daphnia, Cypris,
and Moina. Their number was influenced by the effect of pH (measured by digital pH
meter), temperature (measured by thermometer), free CO2 level (estimated by APHA
method), and dissolved O2 (estimated by Winkler’s method). The season wise variation
of zooplankton in pond indicate the different environmental condition in water bodies.
Keywords
Zooplankton, Pond Ecosystem, Critical t-Value.References
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- Seasonal variation of freshwater Zooplanktons in Bankura, West Bengal, India
Authors
1 Dept of Zoology, Bankura Christian College, Bankura - 722101, IN
2 Dept. of Zoology, Bankura Christian College, IN
3 UG & PG Department o f Zoology, Midnapore College, Midnapore 721101. Dist- Paschim Medinipur, IN
Source
Indian Science Cruiser, Vol 29, No 3 (2015), Pagination: 17-21Abstract
Zooplankton are the major mode of energy transfer between Phytoplankton and fish and important for fish population. Zooplanktons also play an important role to serve as bio indicators as well as to assess the pollution status of water. In this present study, we tried to investigate the plankton species richness, diversity and evenness and to state the condition of a freshwater tropical perennial pond, Padmapukur of PratapBagan, Bankura. Diversity of different group of zooplankton is more in summer season than the winter and rainy season. The population density of zooplanktons varies from month to month and recorded maximum density (91) in the month of November, 2012 and minimum density (40) in the month of August, 2013.