Volume 40, Issue 6
December 1954, pages 161-190
pp 161-166 December 1954
The bacterial flora of the off-shore sea-water of Tellicherry and Calicut was comprised of a limited number of types—Achromobacter,Bacillus,Micrococcus, Flavobacterium, Pseudomonas, Bacterium, Corynebaclerium andSarcina. All thePseudomonas were denitrifiers, including the two fluorescent ones. There were only very few psychrophiles but a large number of thermoduricBacillus species. For preservation use of cold is indicated because of the poverty of psychrophiles and abundance of mesophilic forms.
pp 167-172 December 1954
A simple method for the Chromatographic separation of inorganic cations in mixtures and in biological media in the order of 0.15 to 0.2 µg. has been described. Different spray reagents for the detection of the cations and also their Rf values in three solvent mixtures, N-butanol-acetic acid-water, aqueous collidine, and aqueous lutidine have been reported.
pp 173-182 December 1954
The influence of 10 hour short-day photoperiod (8–00 a.m. to 6–00 p.m.) has been studied on four late-winter varieties of rice, C. No. 3 (a selection from Kajal Champa of Cuttack District), S.R. 26 B (a selection from Kalambank of Puri District), F.R. 13 A and F.R. 43 B (both flood-resistant varieties) of Orissa. Out of these four varieties, C. No. 3, S.R. 26 B and F.R. 13 A react to short-day photoperiod likewise and the other variety F.R. 43 B behaves differently. Short days for 3 weeks during the seed-bed stage bring about a delaying effect in ear emergence in the above stated three varieties. As the duration of short-day treatment increases to 4, 5, and 6 weeks in the seed bed, there is more and more delay in the time of ear emergence. The interesting point is that when the short-day phctoperiod has been given to the seedlings for 6 weeks and then continued after transplantation till ear emergence, a reverse effect, namely, a marked earliness in ear emergence is noted. Variety F.R. 43 B has behaved a little differently. In the prolonged short-day treatment set, 85% of the plants have shown an average earliness of 35 days in ear emergence, while the rest 15% have shown an earliness of 68 days in ear emergence.
pp 183-190 December 1954