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Asian J. Exp. Sci, Vol. 15, No. 1&2,
2001, 1-8 Under present investigation effect of different inoculum levels of H. avenae on the rate of photosynthesis and water absorption capacity of barley variety RD 103 was evaluated. Photosynthetic efficiency of Hordeum vulgare in terms of Absolute Growth Rate (AGR), Relative Growth Rate (RGR), Net Assimilation Rate (NAR) and chlorophyll content was recorded in healthy and diseased plants of susceptible barley variety (RD 103) during growth periods of 30-60, 60-90 days. Total chlorophyll content and net photosynthetic rate decreased with increasing inoculum levels in diseased plants over their healthy control. Reduction in AGR was evident during growth periods of 30-60 and 60-90 at 10,000 inoculum level but in 90-120 days old plants even at the inoculum level of 100 juveniles per kg soil. Maximum decrease in RGR was noted at 10,000 inoculum level at all the growth periods over healthy checks. Similarly in 30-60 days old plants NAR was minimum at 10,000 inoculum level, whereas in 60-90 and 90-120 days old plants it was minimum at 1000 and 100 inoculum levels respectively. Key Words : H. avenae, Hordeum vulgare, Absolute Growth Rate (AGR), Relative Growth Rate (RGR), Net Assimilation Rate (NAR), Chlorophyll, Photosynthesis etc. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Asian J. Exp. Sci, Vol. 15, No. 1&2,
2001, 9-16
Cleistanthus collinus, a toxic
plant, contains three glycosidic compounds, Cleistanthin A, B and C.
Cultured K562 cells were treated with 1mg/ml and 10mg/ml of each
Cleistanthins (A and B). At higher concentration a significant dose
dependent decrease has been noted in the incorporation of thymidine and
uridine into DNA and RNA, respectively. However, no significant difference
in leucine incorporation into proteins was discerned. Hence present study
shows Cleistanthin A and B inhibition nucleotides (DNA, RNA) with no
difference in aminoacid transportation into macromolecules (Protein) into
cell cytoplasm of K562 cells. However it dos not affect transport of
nucleotides and aminoacids into the cytoplasm. Thus, these results showed
that the cell growth/ proliferation is checked by these compounds at the
replication and transcriptional level, but not at the translational level. The free amino acids in the lateral muscles and anterior kidney are estimated both, qualitatively and quantitatively. The free amino acid pool of the lateral muscles exhibits almost definite constancy. The pool is observed to be disturbed due to occasional appearance of some amino acids. Roughly 5% amino acids in this tissue are extra additions during the course of the year. The maximum alterations are seen in the spawning season in the tissue studied. Tyrosine, tryptophan and ornithine appear only in the breeding season. The highest concentration of the free amino acids is anticipated in the spawning period. A continuous gradual increase in the quantity of the free amino acids is observed up to spawning period. In anterior kidney, besides other amino acids, arginine and ornithine are also detected. The results point to the fact that the amino acid pool in the fish tissues may be almost invariable yet quantity wise it is alternating according to breeding season. The amino acids in the intercellular fluid help to maintain the milieu and are taken up by the cells when required for some metabolic activity. Key words : Free amino acids, Seasonal variations, Lateral muscles, Anterior kidney, Fish Nandus nandus - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Asian J. Exp. Sci, Vol. 15, No. 1&2,
2001, 27-37
In Indian indigenous systems of medicines
namely Ayurveda and Unani-Tibb some mineral preparations are
used and called as Bhasmas and Kushta
respectively. Preparations of these drugs involve calcination of certain
metals and incorporation of some herbal juices into it through some
exhaustive procedures. In the present study four such drugs have been
evaluated for their toxic manifestations on cognitive functions. Two drugs
are the calcined forms of mercury and two are of lead taken one each from
Ayurvedic and Unani systems. Ayurvedic preparations were Kajjali
Bhasma (Hg) and Nag Bhasma (Pb), and Unani drugs were
Kushta-Sangraf (Hg) and Kushta-Surb (Pb). For testing the cognitive activity
two behavioural models of active and passive learning with retention were
used in the study. To substantiate these findings neurochemical estimation
of acetylcholinesterase and serotonin in discrete brain areas were also
carried out. All the four drugs caused the impairment of cognitive functions
along with corresponding effects on neurochemical parameters on high dose in
ten days study. Result in this study calls for some extra precautions while
prescribing such extensively used preparations. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Asian J. Exp. Sci, Vol. 15, No. 1&2,
2001, 39-47 Keywords : Radioprotection, Diltiazem, Acid-alkaline Phosphatase, Gamma irradiation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Asian J. Exp. Sci, Vol. 15, No. 1&2, 2001, 49-62
Behavior of the complex Zinc (II)
Ethylenediamine in Dimethylformamide-Water and Isopropanol-Water mixture
studied by direct current polarography. The reduction of complex in both the
mixtures was found to be diffusion controlled as revealed by constant value
of id/h˝eff, and quassi-reversible also as the slope value varies from 51mV
to 54mV. The Er˝ values were determined using Gellings graphical methods and
the shifting of Er˝ towards more negative side with successive addition of
the ligand to the metal and decreased diffusion current in all the mixture
of the solvent [20%, 40% and 60% (by volume) DMF- water and isopropanol-water
mixtures] confirm complexation between metal and ligand in them.
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