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Search Results: 1 - 10 of 414 matches for " Pothiraj Nagarajan "
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Marker Assisted Selection for Leaf Blast Disease resistance and other yield traits in rice (Oryza sativa L.) using RAPD Markers
Immanuel Selvaraj. C, , Pothiraj Nagarajan, K. Thiyagarajan, M Bharathi, and R Rabindran
Electronic Journal of Plant Breeding , 2011,
Abstract: A segregating population of 220 F2 individuals was developed by raising the selfed F1 seeds of a single hybrid plant, White Ponnix Moroberekan. Two hundred and twenty F3 families were phenotyped for blast resistance under artificial condition. Bulksegregantanalysis resulted in the identification of 12 leaf blast resistant phenotype specific RAPD markers. Mapping survey wasdone with seven RAPD primers which co-segregated in BSA. Twelve RAPD markers were scored in the F2 mapping population.Out of 12 marker loci, 11 marker loci (91.97 per cent) fitted into the expected segregation ratio of 3:1 based on χ2- test at 0.05per cent probability value. One way ANOVA was performed to identify the marker phenotype association and this resulted in theidentification of seven RAPD markers linked to three traits viz., leaf blast resistance (OPBB 5258, OPBB 5194, OPAL 16940 andOPBD 12680), five markers for GPT and one marker for grain yield per plant.
Genetic diversity analysis aiding in selection of parents by RAPD markers in rice (Oryza sativa L)
Immanuel Selvaraj. C, Pothiraj Nagarajan, K. Thiyagarajan, M Bharathi, and R Rabindran
Electronic Journal of Plant Breeding , 2011,
Abstract: Genetic diversity among 26 rice genotypes was investigated using RAPD markers. The genotypes were screened for the leaf blastdisease reaction at two different environments. The average number of alleles amplified per primer was 9.03. Average number ofpolymorphic bands per primer was 6.80 with average polymorphism information content (PIC) of 0.264. Clustering based ondendrogram revealed two major clusters and 5 sub clusters. Principal Coordinate Analysis (PCoA) revealed three major groups.The first coordinate does not discriminate any of the genotypes based on the geographical origin, but the second and thirdcoordinates differentiated South East Asian and South Asian genotypes clearly. Genetic diversity analysis of rice genotypes withRAPD marker system and phenotypic screening for blast resistance revealed that White Ponni (susceptible) and Moroberekan(resistant) were one among the genetically distant and contrasting parents for leaf blast resistance. There is no cleardiscrimination of the markers to distinguish leaf blast resistant and susceptible genotypes into separate clusters by the principalcoordinate analysis.
Enhanced production of cellulases by various fungal cultures in solid state fermentation of cassava waste
C Pothiraj, P Balaji, M Eyini
African Journal of Biotechnology , 2006,
Abstract: Cellulases are a group of hydrolytic enzymes capable of degrading cellulose to the smaller glucose units. These enzymes are produced by fungi and bacteria. The solid waste of sago industry using cassava tubers was fermented by Aspergillus niger, Aspergillus terreus and Rhizopus stolonifer in solid state fermentation. The cassava waste contained dry wt of 13.4% cellulose and 2.9% protein by dry weight. The highest cellulase activity was observed on the 10th day in R. stolonifer mediated fermentation. R. stolonifer was more efficient in bioconverting cassava waste into fungal protein (9%) compared to A. niger and A. terreus.
Approximate Controllability of Fractional Order Retarded Semilinear Control Systems  [PDF]
Simegne Tafesse, Nagarajan Sukavanam
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2013, DOI: 10.4236/ijmnta.2013.23020

In this paper, approximate controllability of fractional order retarded semilinear systems is studied when the nonlinear term satisfies the newly formulated bounded integral contractor-type conditions. We have shown the existence and uniqueness of the mild solution for the fractional order retarded semilinear systems using an iterative procedure approach. Finally, we obtain the approximate controllability results of the system under simple condition.

An Enhanced Approach in Run Length Encoding Scheme (EARLE)
A. Nagarajan
International Journal of Engineering Trends and Technology , 2011,
Abstract: Image compression is reducing the size in bytes of a graphics file without degrading the quality of the image to an unacceptable level. The reduction in file size allows more images to be stored in a given amount of disk drives or memory space. It also consumes the time required for images to be sent over the Internet or downloaded from Web pages. Data compression schemes give the optimized solution to transfer the data and store the data in secondary storage. In this paper we are going to propose new idea about enhanced version of run length encoding algorithm. We enhanced the draw backs of run length encoding scheme to provide an optimum compression
Patient communication in Intensive Care Unit-Application in pediatric population
Muthialu Nagarajan
Indian Journal of Critical Care Medicine , 2010,
Indian Streams Research Journal , 2013,
Abstract: The National awakening assumed new dimensions in India in the twentieth Century when the elites emerged as social and political leaders. One such towering Personality was C. Rajagopalaehariar (1878 - 1972) popularly known as Rajaji or C.R. of Madras Presidency. Rajaji was one among the selected band of leaders who participated in the freedom movement of India. His emergence in various stages of the freedom movement, his dedication to the national cause and his untiring struggle against the British rule earned him a significant place in the history of freedom movement His stature as a front-rank national leader is a tribute to his devoted service for the cause of the nation for almost four decades, His whole career was a record of self-confidence, Courage, fearlessness and innovations based on Gandhian concepts.
Presidential Address - Plant Pathology and Indian Agriculture -- Past, Present and Future
Indian Phytopathology , 2012,
Abstract: Although the history of plant pathology in India is only 100 years old the past and future for plant pathology in India is reviewed.
An Analysis in various Compression Algorithms
A. Nagarajan
International Journal of Computer Trends and Technology , 2011,
Abstract: Image compression is the application of Data compression on digital images. It is the process of reducing the amount of data needed for storage or transmission of a given piece of information (text, graphics, video, sound, etc.). Data compression stands for compressing data or files containing data so that they can be stored in much less memory space than they had been stored in their original form. In this paper we analysis the various compression methods and their pros & cons.
Genotoxicity Assessment of Mercuric Chloride in the Marine Fish Therapon jaruba.
Nagarajan Nagarani
EnvironmentAsia , 2009,
Abstract: The aim of the present study was to standardize and to assess the predictive value of the cytogenetic analysis by Micronucleus (MN) test in fish erythrocytes as a biomarker for marine environmental contamination. Micronucleus frequency baseline in erythrocytes was evaluated in and genotoxic potential of a common chemical was determined in fish experimentally exposed in aquarium under controlled conditions. Fish (Therapon jaruba) were exposed for 96 h to a single heavy metal (mercuric chloride). Chromosomal damage was determined as micronuclei frequency in fish erythrocytes. Significant increase in MN frequency was observed in erythrocytes of fish exposed to mercuric chloride. Concentration of 0.25 ppm induced the highest MN frequency (2.95 micronucleated cells/1000 cells compared to 1 MNcell/1000 cells in control animals). The study revealed that micronucleus test, as an index of cumulative exposure, appears to be a sensitive model to evaluate genotoxic compounds in fish under controlled conditions.
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