Effects of zeatin on amino acid and sugar contents of detached radish (Raphanus sativus L.) cotyledons were investigated to determine if accumulation of these solutes contributes to cytokinin-enhanced growth. Protein and amino acid levels were not significantly affected, but in cotyledons incubated in light the hormone caused greater accumulations of reducing sugars than occurred in light contr...

Ten years after Indonesia implemented a major decentralisation policy, regional income per capita disparity and excessive rate of natural resource extraction continue to be pressing issues. There are great interests in identifying macro policies that would reduce regional income disparity and better control the rate of natural extraction, while maintaining reasonable national economic growth. T...

In order to assess the importance of nitrate-dependent Fe(II) oxidation and its impact on the growth physiology of dominant Fe oxidizers, we counted these bacteria in freshwater lake sediments and studied their growth physiology. Most probable number counts of nitrate-reducing Fe(II)-oxidizing bacteria in the sediment of Lake Constance, a freshwater lake in Southern Germany, yielded about 10(5)...

concentration of co2 in the atmosphere is likely to increase up to 550 µmol mol-1 by the middle of 21st century. such an increase in the atmospheric co2 would affect plant growth, and as well the productivity of crop plants. a field experiment was conducted with two potato cultivars namely kufri surya and kufri chipsona-3 grown inside open top chambers (otcs) at ambient (385±30 µmol mol-1) vs. ...

aqueous extract from leaves of sambcus ebulus l. were tested for antifeedant, growth regulation and ovicidal effects against the red floor beetle tribolium confusum duv. under laboratory condition (29?1?c, rh 60?5% and 12l:12d). the results indicated a significant deterrence for feeding, and comparatively significant larval, pupal and adult weight decrease in treated vs. controlled insects. sim...

background: the hazardous nature of aflatoxins to human and animals necessitate the establishment of control measures. objectives: the effect of two medicinal plants, satureja khozistanica and satureja macrosiphon, was studied on inhibiting aspergillus flavus growth and reducing aflatoxin b1-content in the liquid medium. methods: essential oils were isolated by hydrodistillation method, using a...

Microbial plugging has been proposed as an effective low cost method of improving sweep efficiency by reducing permeability of water-swept regions of a reservoir. To optimize the field implementation of this method, better mechanistic and volumetric understanding of biofilm growth within a porous medium is needed. In particular, the engineering design hinges upon a quantitative relationship bet...