Data essential for different ecological characterization of a vegetation or a plant community needs detailed survey of the area. A preliminary survey or reconnaissance precedes intensive work in any particular area. During the primary survey of a vegetation the following criteria are generally observed: 1. Distribution of different communities and such other ecological groups, 2. Different climatic, edaphic and topographic [...]
Enzymes are thermo-labile organic catalysts which are very much sensitive to heat and pH. The activity of a number of respiratory enzymes could be detected within plant tissue by suitable tests. (a) Detection of Dehydrogenase: This enzyme accomplishes intracellular oxidation and reduction by the transfer of hydrogen from one type of molecule to another. The importance of such enzyme is [...]
In this article we will discuss about the gravimetric method for estimation of sulphate in plants. Principle: Sulphate is precipitated as barium sulphate in hydrochloric acid medium by the addition of barium chloride solution. The reaction is carried out near the boiling temperature. The precipitate is filtered and washed to remove the chlorides, then dried or ignited and weighed as [...]