Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/13617
Title: Biochemical studies on Lichens as potential source of Agrochemicals
Researcher: Goel, Mayurika
Guide(s): Rani, Archana
Dureja, Prem
Keywords: Chemistry
Agrochemicals
Lichens
Applied Chemistry
Upload Date: 3-Dec-2013
University: University of Delhi
Completed Date: 2012
Abstract: Agriculture is the pivotal sector for ensuring food and nutritional security, sustainable development and for alleviation of poverty. It is the key sector for generating employment opportunities for the vast majority of the population; most of them depend for their livelihoods. With limited land available of cultivation, there are growing concerns about environmental sustainability; growth of agricultural output must come through productivity improvements on the existing land. However, this additional production can only be achieved in part by suitable control of losses due to biotic agents (pests, weeds), which is estimated to be 38-42 % of the potential production. newlineIn the present scenario, when the scientist community is compelled to develop environmentally benign pest control strategies, the present work was initiated aiming at the survey and collection of lichens from the high altitudes unexplored habitats. A survey was done from higher ridges of Himalayas and various endemic foliose and fructicose forms of lichens were collected. Current study was undertaken aiming at the isolation and identification of bioactive metabolites (chemical constituents) from the Himalayan lichen species unexplored for their agrochemical potential. newlineOn the basis of the comprehensive and comparative study carried out, it can be concluded that investigated lichen extracts manifested strong, but varying degree of agrochemical activities. These similarities and differences in the agrochemical potentiality of extracts of different species of lichens are probably a consequence of the synergistic effect of different components present in the crude extracts. Biologically active extracts of all the lichen species yielded twenty four compounds. In total, fourteen compounds (Pr Ia- Pr XIVb) were isolated and identified from P. reticulata, six compounds (Rr Ia- Rr VIb) were isolated and identified from R. roesleri, three compounds (Ul Ia- Ul IIIb) were isolated and identified from U.
Pagination: xv, 163p.
URI: http://hdl.handle.net/10603/13617
Appears in Departments:Dept. of Chemistry

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01_title.pdfAttached File225.25 kBAdobe PDFView/Open
02_certificate.pdf37.72 kBAdobe PDFView/Open
03_dedication.pdf25.18 kBAdobe PDFView/Open
04_acknowledgement.pdf57.28 kBAdobe PDFView/Open
05_content.pdf60.4 kBAdobe PDFView/Open
06_list of tables.pdf47.67 kBAdobe PDFView/Open
07_list of figures.pdf56.81 kBAdobe PDFView/Open
08_introduction.pdf325.87 kBAdobe PDFView/Open
09_review of literature.pdf1.64 MBAdobe PDFView/Open
10_material and methods.pdf2.9 MBAdobe PDFView/Open
11_results & discussion.pdf4.74 MBAdobe PDFView/Open
12_conclusions & future scope.pdf88.97 kBAdobe PDFView/Open
13_refrences.pdf113.87 kBAdobe PDFView/Open
14_publications.pdf60.25 kBAdobe PDFView/Open
15_abstract.pdf73.33 kBAdobe PDFView/Open


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