ETHNOMEDICINAL PLANTS USED BY IRULAR TRIBES IN JAVADHU HILLS OF SOUTHERN EASTERN GHATS, TAMIL NADU, INDIA

Tribal medicine is considered as mother of indigenous systems of ethnomedicine. In the present study ethnomedicinal plant survey was carried out among Irular Tribes who settled in Javadhu hills, which is located in Southern Eastern Ghats of Tamil Nadu.  About 30 species of ethnoherbal medicinal plants belonging to 13 families were reported in the present study. The survey indicates that many number of ethnomedicinal plants were traditionally used by the Irular tribes of Javadhu hill for the treatment of various diseases.

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Codon usage pattern of mastrevirus and begomovirus in the family, Geminiviridae

The viruses in the family, Geminiviridae are the most devastating pathogen infecting plants.  Among the seven genera within the family Geminiviridae, Mastrevirus and Begomovirus are primarily the most destructive.  However, their codon usage analysis is not examined and hence its role in geminivirus host range evolution remains unrevealed.  In this study, a detailed comparative analysis was performed using species of Maize streak virus (MSV) and Tomato leaf curl virus (ToLCV).  Our results suggest the possible interaction of mutational pressure and natural selection.  Correspondence analyses indicate that the evolution of MSV and ToLCV is independent of their geographical location.  Hence, we emphasize the role of codon usage pattern of these viruses in their evolution.

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Effect of aluminum and lead on the germination and growth of Vigna ungiculata (L.) Walp.

The present study deals with the effect of metal toxicity (aluminum, lead and combination of both the metals) on seed germination, root length, shoot length, seedling length and dry biomass of  Vigna ungiculata (L.) Walp.  Lead adversely affected the seedling by significantly reducing the growth whereas aluminum did not show such effect in the species. Percentage of germination was good in the species at different concentration of treatment (aluminum, lead and combined treatment). Shoot length was also not much affected in Vigna ungiculata (L.) Walp. The species showed the purpling of stem. Dry biomass of Vigna ungiculata  (L.) Walp. However, dry biomass decreased to a lesser extent when treated with aluminum, lead and combined treatment as compared to control.

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TEACHERS’ ATTITUDE TOWARDS INSTRUCTIONAL STRATEGY ON MATHEMATICS AT SECONDARY LEVEL

Teaching is one of the most challenging and noble profession in the world. Teachers are significant in facilitating learning in more efficient and effective ways. Teachers hold the key to the success of any educational reform, and they are accountable for successful human development. Instructional strategies intend that the teacher take up the role of leading and mentoring the students. Instruction strategy stands for the creation of an appropriate teaching learning environment leading to help the students in the realization of the set teaching learning objectives. The teacher requires adopting a number of strategies so as to be able to teach successfully whether online or in class room. This study was focused to the school teachers ‘attitude towards instructional strategy on mathematics. The investigator had used normative survey method; the samples were drawn by simple random sampling techniques with the sample of one hundred and two teachers handling mathematics at ninth standard level in government, aided and private schools in Puducherry region. In the present study, the attitude of teachers’ towards instructional strategy on mathematics is at a moderate level. The male and female teachers differ in their instructional strategy attitude. The ‘experience in teaching’, ‘type of management’ and ‘locality of school’ does not play a remarkable role in teacher’s attitude towards instructional strategy on mathematics.

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PROFESSIONAL COMMITMENT OF TEACHERS WORKING IN TRIBAL AREA SCHOOLS

Professional Commitment is a ‘passion to the work involved in teaching or a specific aspect of teaching’. It is an investment of time outside of contact hours with students as a responsibility to impart knowledge, attitudes, values and beliefs and take responsibility for passing on a core set of skills, understandings and values. Professional commitment is the willingness to engage with the school and the school community. It is a belief that teachers have a professional responsibility that reaches out beyond the four walls of the classroom and perhaps even extends beyond the boundary of the school. The present study focuses on the Professional Commitment of the teachers working in tribal area schools located in Tamil Nadu. By using the normative survey method 121 samples were drawn by the investigator under  random sampling technique from the school teachers working at secondary and higher secondary levels. The schools were located in Holli Hills (N=64) and Sitheri Hills (N=57).The findings of the study shows that, the maximum number of teachers have acquired ‘average’ and ‘Low level’ professional commitment. The male and female teachers have same level of professional commitment. The professional commitment of the school teachers is towards the welfare of students, welfare of society, human values and academic excellence.

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In vitro clonal propagation of vulnerable medicinal plant, Mimosa pudica L. Ramesh.S1, Chandran.C1,Venkatesan.G2.

Mimosa pudica L. is a medicinal herb. The in vitro regeneration protocol of this plant through shoot tip and nodal, Root tip explants. The explants were culured on MS medium supplemented of different concentrations Benzyl amino acid purine (BAP), Kinetin (KN), 2,4-Dichlorophenoxy acetic acid (2,4-D), IAA, NAA, IBA and GA3 were (0.5 to 2.5 mg/l) used. Elongation of regenerated shoots tip, nodel, shoot tip using different growth regulators. Induction of roots from the regenerated shoots. Hardened regenerant were acclimatized to the soil.

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Diversity of soil mycoflora of JatrophacurcasL. Plantation of TamilNadu, Southern India.

A total of number of 57 taxa were isolated by Warcup and Dilution plating method from the soil of Jatrophacurcas  (Biodiesel) plantation at Mannargudi (Thiruvarur Dt.) located in south east cost of India. 57 taxa beloning to 37 genera were isolated and identified from the plantation soil. Several species belongs to various groups viz. one species belonging to Ascomycete, one species from Coleomycete, 47 species from Hyphomycetes remaining 3 species from Zycomycetes and some yeast forms, sterile colonies were recorded. Hyphomyctes groups of  fungi were showed  higher diversity.The Physico-chemical analysis of the soils revealed the following features: Soil texture was Sandy Loam, Calcium Carbonate not contain, pH 6.8, Salt EC(electrical conductivity) 0.09 dSm-1. Macro nutrients (Kg/acre) of the soil were Organic carban 0.06, Nitrogen(N) low, Phosphorus(P) 2.6, potassium(K) 105. Micro nutrients were available Ferrous (F) 17.12 ppm, Manganese(Mn) 8.66 ppm, Zinc(Zn) 0.91 ppm, Copper(Cu) 3.84 ppm and Boron(B) low ppm.

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EFFICACY OF SUGARMILL EFFLENT ON GROWTH AND BIOCHEMICAL CONTENTS OF BLACKGRAM [Vigna mungo(L). Hepper]

The present investiction deals with the utilization of different concentration (control, 5, 10, 25, 50, 75 & 100 %) of sugar mill effluent on  growth and biochemical contents  of blackgram (Vigna mungo, var.KM-2).  The physico chemical properties of the effluent was brown in colour with acidic in nature.  BOD and COD values in high and rich in suspended and dissolved solids.  It also considerable quantity of nutrients also present.  The results shows that the lower concentration 10 per cent were increased the growth and biochemical contents.  The above mentioned parameters were decreased with the increase of effluent concentrations. However, the lower concentration  promote the crops plants.

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