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May 2010

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A study of physico-chemical properties of the soybean cultivated soil from semiarid tropic of Tamil Nadu
Uma, C. and Kalaiarasu, S.

The nutrient status of soil is more essential for root nodulation. The Soybean soil samples were collected from 30 different locations of the semiarid tropics viz., Salem, Namakkal and Dharmapuri belonged to 3 textural groups viz., Red loam, Clay loam and Black soils.  The soil samples were analysed for it’s Soil pH, Electrical conductivity, soil organic carbon available N, P and K content. The nodulation pattern and it’s rhizobial populations on the rhizosphere soil of...

Your memory depends on your sleep
Alwin Prem Anand, A., Ezhil Vendan, S. and Kaleeswaran, B.

Sleep is a state in which we are alive and unconscious where our brain is very active and it is said to be dynamic. Sleep is said to be the necessary part of our life. It makes ourself healthy by maintaining the homeostasis of the body function. Sleep is hypothesized to have an important role in memory consolidation. The REM and SWS sleep has its impact on memory formation and consolidation in most tasks like visual discrimination, verbal learning, motor tasks and so on. A survey was made...

Effect of chromium on germination and seedling growth of vegetable crops
Lakshmi S. and Sundaramoorthy, P.

The present study reveals the effect of different concentration of chromium (Cr) on seed germination, seedling growth and moisture content in five vegetable crops, carrot (Daucus carrota). Turnip (Raphanus sativus L), Beetroot (Beta vulgaris L), Tomato (Lycopersium esculentum L) and Brinjal (Solanum melongena L).The effect of chromium on seed germination differed according to the test species and concentration of treatments. The germination enhanced during at lower concentrations (2 and 5ppm...

Screening of blackgram varieties for tolerance to sago factory effluent
Sivaraman .M and P. Thamizhiniyan

The germination percentage, seedling growth and dry weight of six varieties of blackgram were high at 10 percent of sago factory effluent for all the varieties when compared to control.  Among the six varieties studied, Vamban-2 showed better growth, the order of tolerance being Vamban-2>Vamban-1>ADT-4>ADT-5>KM-1>ADT-3.

Screening of the antibacterial properties of Avicennia marina from Pichavaram mangrove
Subashree, M., Mala, P., Umamaheswari, M., Jayakumari, M., Maheswari, K., Sevanthi, T., and Manikandan, T.

Avicennia marina were extracted from different solvents like Acetone, methanol, diethylether, ethanol, ethyl acetate, petroleum ether, chloroform and aqueous extracts against 12 bacterial strains. The present study exhibit maximum antibacterial activity was recorded from chloroform extracts against Enterococci sp. and minimum activity was noted from ethyl acetate extract against Klebsiella pneumoniae, Enterococci sp., Salmonella sp. and Shewanella sp.

Growth and salt balance of the halophyte Salicornia brachiata in relation to salinity
Mala, P., Umamaheswari, M., Jayakumari, M., Maheswari, K., Subashree, M., Sevanthi, T., and Manikandan, T.

Salicornia brachiata is a stem succulent annual halophyte, which is widely distributed in the saltpans of Eastern Part of Pichavaram . Plant samples of Salicornia brachiata were collected from different localities around the East costal part of Tamilnadu, Pichavaram, during the months of June, July, August and September. Salinity and pH of the soils and plants was investigated and the relationship between these parameters tested statistically. The soil salinity values showed that the highest...

Bioethanol production from cellulosic materials
Umamaheswari, M., Jayakumari, M., Maheswari, K., Subashree, M., Mala, P., Sevanthi, T., and Manikandan, T.

In the present study, pretreated sugarcane bagasse is used as the substrate for bioethanol production using cellulase and various yeast strains including thermotolerant strains by simultaneous saccharification and fermentation method at the optimized process conditions. Various pretreatment techniques namely dilute and concentrated sulphuric treatment, sodium hydroxide combined with high pressure steam treatment and steam autoclaving treatment are conducted for mechanically pretreated...

Soil water uptake efficiency of some irrigated indigenous and exotic forage species under GCC desert climatic conditions
Asadullah Al Ajmi and Ahmed Ali Salih

¬The desert environment of the Gulf countries is characterized by high temperatures and limited water resources. Agriculture is by far the largest water user; most of it is used for production of fodder crops. Exotic fodder species, especially Rhodes grass (Chloris gayana) is the dominant forage plant grown. This species is poorly adapted to the harsh environment and consumes substantial amounts of water. This study was designed to compare indigenous forage species to Rhodes grass with...

Ethanol extract of herb sage suppressed the timp-1 expression in lymphoid culture cells
Naoko Okumura, Yuri Nishimura, Hitomi Yoshida, Yuka Nagata, Yasuko Kitagishi, Satoru Matsuda

We aimed to determine the effects of food herbs and spices on several gene expressions. Some herbs and/or spices are found to have a potent transcriptional suppressor activity for the tissue inhibitor of matrix metalloproteinases 1 (TIMP-1) gene. The in vitro effect of the herb Sage ethanol extract on the expression of TIMP-1 was confirmed by reverse transcriptase-polymerase chain reaction (RT-PCR). Western blotting also confirmed the down-regulation of the protein at dose dependent manner...



               Prof. Dr. ISMAIL YILDIRIM