The present paper deals with ecological relationships of insects (Arthropoda – Animalia) with ferns (Pteridophyta-Plantae). It is based on field observations during the collection of ferns from various areas of Garhwal particularly Chamoli and Rudraprayag districts.
The present study was carried out on the phytochemical evaluation of Adiantum incisum Forssk. (Adiantiaceae) in Doon valley, situated in foot hills of Himalayas. Dried plant material was subjected to soxhlet extraction using seven different solvents in the increasing order of their polarity. Phytochemical screening showed the presence of alkaloids, proteins, carbohydrates, cardiac glycosides, saponins, tannins and phenols, triterpenoids in different extracts of the plant while the absence of flavonoids, steroids, fats and oils in all the extracts.
The present paper deals with 198 taxa of Pteridophytes from Dehra Dun District of Uttarakhand. Location, general vegetation, brief ecological classification along with distributional list of these plants in different valleys of Dehra Dun is provided in table form. The information provided herewith is based on the authors own observation, coupled with the fragmented earlier published literature and specimens housed in different herbaria i.e. BSD, DD, CAL, LWG, etc. List of threatened taxa along with the uses of pteridophytic vegetation in the area is also provided.
The present paper deals with 27 species, which are additions to the fern flora of Pauri district of Uttarakhand state. Each species in provided with correct botanical name and the basionym (if any). Nomenclature has been made up to date.
The present study was carried out on the antibacterial activity of Adiantum incisum Forssk. In Doon valley, situated in foot hills of Himalayas. Different extracts of the plant revealed its antibacterial activity against the studied pathogenic bacterial strains.Out of the seven extracts assayed the acetone and ethanol showed maximum activities. Therefore, Minimum Inhibitory Concentration (MIC) of these two extracts was determined against the selected bacteria showing zones of inhibition ≥ 10 mm. The MIC for different strains ranges between 31.25mg/ml to 125mg/ml. These studies revealed that acetone and ethanol extract of Adiantum incisum Forssk. possess good antibacterial activity against bacterial strains that cause various human infections like UTI, meningitis, food poisoning, fever, diarrhea etc.
Garhwal Himalayas present a rich and diverse pteridophytic flora. Chamoli and Rudraprayag the two major districts of Garhwal were extensiverly explored by the authors between the years 2002-2006. During the field study a great range of morphological variations in rhizome, stipe, lamina, pinna, arrangement of pinna, pinnation, pinna apex, venation pattern, spore morphology was noticed in few species of ferns from the area under study.
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