Influence of clipping and water stress on growth performance and nutrient value of four range grasses

The paper examines the effect of water stress and clipping treatments on growth behaviour and nutrient value of 4 grasses, viz.,Lolium perenne, Poa pratensis (both C3 plants), Chloris gayana and Panicum coloratum (both C4 plants). Biomass, net production, relative growth rates were affected more markedly and adversely in the two C4 species due to water stress. The effect of clipping varied with species and was generally more marked and adverse in two C4 species. The C3 plants developed higher R:S ratio under water stress. Water stress resulted in a greater decline of total non-structural carbohydrate and protein content in the two Q species. Clipping affected adversely the non-structural carbohydrate content and again the effect was more marked in the two C4species. On the other hand, protein content in shoots of all plants increased due to clipping

Statistical study of different solar activity features with total column ozone at two hill stations of Uttarakhand

This paper presents a statistical study of different solar activity features (DSAF) viz., sunspot number (SN), solar active prominences (SAP), solar flares (SF) and solar proton events (SPE) with total column ozone amount using 28 years (1986-2013) data. The ozone data has been taken for two hill stations of Uttarakhand i.e. Nainital (29º 23' N, 79º27' E) and Mussoorie (30° 27' N, 78° 06' E). Graphs are plotted between Total Column Ozone (TCO) and DSAF for months Jan to Dec, annually. We obtained a positive correlation coefficient (r) between TCO and DSAF. The value of r for TCO-Nainital with SN, SAP, SF and SPE is found to be 0.51, 0.30, 0.49, and 0.54 respectively and for TCO-Mussoorie with SN, SAP, SF, SPE is found to be 0.45, 0.27, 0.44, and 0.51.  This supports the fact that solar activity features contribute to the production of ozone

Statistical study of different solar activity features with total column ozone at two hill stations of Uttarakhand

251-262This paper presents a statistical study of different solar activity features (DSAF), viz. sunspot number (SN), solar active prominences (SAP), solar flares (SF) and solar proton events (SPE) with total column ozone (TCO) amount using 28 years (1986-2013) data. The ozone data has been taken for two hill stations of Uttarakhand, viz. Nainital (29º23'N, 79º27'E) and Mussoorie (30°27'N, 78°06'E). The study reveals a positive correlation between yearly averaged TCO and DSAF. The value of linear correlation coefficient (r) for TCO-Nainital with SN, SAP, SF and SPE is found to be 0.51, 0.30, 0.49, and 0.54, respectively and for TCO-Mussoorie with SN, SAP, SF, SPE is found to be 0.45, 0.27, 0.44, and 0.51, respectively. This supports the fact that solar activity features contribute to the production of ozone. Also the trend in TCO over both the stations annually, monthly and seasonally has been studied. A negative trend is observed indicating a decrease in the ozone concentration over these stations in given time period

Comparative biomass and water status of four range grasses grown undertwo soil water conditions

The influence of water stress on growth of four grasses was investigated. Panicum coloratum and Chloris gayana, the two C4 species, were more adversely affected, while the two C3 species (Poa pratensis and Lolium perenne) were found to tolerate the water stress conditions better as reflected by a comparatively smaller decline in their biomass

Structure and stereochemistry of coccuvine (Cocculus laurifolius DC)

Coccuvine C<SUB>17</SUB>H<SUB>19</SUB>NO<SUB>2</SUB>, m.p. 137-38&#176;, a new alkaloid from Cocculus laurifolius DC has been assigned the structure and stereochemistry as (I) on the basis of spectroscopic studies and chemical correlation

Predominant Tuberculosis Spoligotypes, Delhi, India

One hundred five Mycobacterium tuberculosis clinical isolates from the Delhi area were typed by spoligotyping; 45 patterns were identified. Comparison with an international spoligotype database showed type 26, Delhi type (22%), type 54 (12%), and type 1, Beijing type (8%), as the most common. Eighteen spoligotypes did not match any existing database pattern