Browsing by Subject "Medicinal plant"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Floral biology, pollinator guilds, and male fitness of Aconitum spicatum (Bruhl) stapf in central Nepal(Department of Botany, 2023) Masrangi, PrativaFloral biology includes several studies on reproductive and pollination biology, such as biology of various floral parts, floral rewards (nectar and pollen), and pollination by various pollen vectors. Plant-pollinator interactions are greatly influenced by floral traits, which also determine the group of specific floral visitors of a particular plant. This study aims to document different floral traits as well as their potential floral visitors and male fitness of Aconitum spicatum (Brühl) Stapf. Flower (bud and mature flower) samples were collected from 3043-4197m altitude while pollinator samples were collected from 3315-4265m altitude along the Annapurna trekking route of Annapurna Conservation Area, Kaski, Central Nepal. Floral traits like tepals length, anther number, anther and stamen length, pollen and ovule number were measured in the laboratory under microscope and few floral traits were measured in the field. The result showed that all floral traits varied significantly among the populations except for the pollen-ovule ratio. The variation in floral traits of A. spicatum among different populations might be due to pollinator mediated selection. It was observed that, the bumblebee (Bombus miniatus) actively visited flower of A. spicatum during day time among all population while nocturnal visitors were not observed. B. miniatus actively visited the flower after 9 a.m. till 6 p.m. and total 1916 visits were recorded within three days for total 23 hours at an elevation of 3901m while only 5 visits were recorded at an elevation of 4265m for 2 hours of observation period when weather was extremely cold. The visitation rates vary across the different timing of the day and also among the various days. The visitation rate of B. miniatus was maximum when the weather was clear and sunny and least visitation rate was recorded during cloudy and windy weather. The male fitness of A. spicatum was found to be 14.08% and very high male fitness of A. spicatum linked with B. miniatus; the bumblebee transports 2416.65±652.85 pollen grains out of total 17169±1125 (mean ± SE) pollen grains of A. spicatum during a single foraging bout. These facts thus indicate that B. miniatus could be the prime pollinator of A. spicatum. Keywords: Floral traits, potential floral visitors, Annapurna trekking route, medicinal plantItem Popularly Used Medicinal Plants by Tamang Ethnic Group at Three VDCs (Chilime, Thuman and Gatlang) of Rasuwa District(Department of boatny, 2008-01) Yadav, SarojRasuwa districts isa mountainous least developed and remote district with rich floraldiversity due to altitudinal variation.Along withrich biodiversity, it is supported withnatural beauty, typical medicinal and aromatic plants, several endemic threatened andendangered animals and plants, ethno medicinally and economically useful plantspecies and ancient cultural heritage. Along with the floral diversity this district isalso rich in cultural diversity. Tamang ethnic group is the dominating group in thisdistrict. There are 18 VDCs in Rasuwa district and out of that threeVDCshave beenselectedthis study where there is the dominance of Tamang ethnic group. The study was undertaken primarily to document the ethno medicinal information ofthreeVDCs, Chilime, Gatlang and Thuman which was accompanied by three fieldvisits made from Sept. 2006 to Aug. 2007. The focus was also made to quantify theindigenous knowledge of Tamang communities within the three VDCs using theconsensus methodology. The ethnomedicinal study indicates that large number of plant species is used astraditional medicines. There were 53species of ethno medicinal importance survey inthe study area. Out of the total 49species,45species were reported in consensus list.The medicinal uses of the plants were grouped into 11 categories and the“informantconsensus” (F ) factor for each usage category was calculated. The result ofconsensus suggested a well defined medicinal tradition in the study area. Trade ofmedicinal and aromatic plant was found to be very high. The frequently traded specieswere Nardostachys grandiflora, Neopicrorhiza scrophulariiflora, Rheum australe,Swertia chirayita, Valeriana jatamansii and Delphiniumsp.The people of Chilimewere seen to be highly engaged in the collection of MAPs. ic There was found no any appropriate method of sustainable harvesting and management practices. Most of the people seemed always in hurry to collect those products which have high market value. This has led many species to go under high threat. Therefore, there is a need of promotion of other kind of options to be dependent on, like the cultivation practices and sustainable utilization of the medicinal plants. It seems to be most viable option for their effective management.