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Dr. Y. S. Parmar University of Horticulture & Forestry, Solan

Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Solan, was established on 1st December, 1985 with the objective to promote education, research and extension education in the fields of Horticulture, Forestry and allied disciplines. Late Dr. Yashwant Singh Parmar, the first Chief Minister and the architect of Himachal Pradesh perceived the importance of Horticulture and Forestry to develop and improve the State economy which led to the establishment of this University. Its history lies in erstwhile Himachal Agricultural College, Solan, established in 1962 and affiliated to the Panjab University. It became one of the campuses of Agriculture Complex of Himachal Pradesh University on its formation in 1970. Consequent upon the establishment of Himachal Pradesh Krishi Vishvavidyalaya in 1978, this campus became its Horticulture Complex and finally in 1985, assumed the status of a State University, being the only University in the country engaged exclusively in teaching, research and extension in Horticulture and Forestry. The University is located at Nauni in Solan District of Himachal Pradesh, 13 km from Solan on Solan-Rajgarh Road, at an elevation of 1300 metres above mean sea level. Solan town is situated on national highway (NH-22) and is well connected by train and bus services. The University has four constituent colleges, out of which, two are located at the main campus Nauni, one for horticulture and the other for forestry, having 9 and 7 departments, respectively. The third College i.e., College of Horticulture & Forestry is located at Neri in Hamirpur District on Nadaun-Hamirpur state highway, about 6 Km from Hamirpur town and is well connected with bus service. The college offers three Undergraduate Degree Programmes i.e. BSc (Hons.) Horticulture, BSc (Hons.) Forestry and B. Tech. Biotechnology and MSc degree programme in a few subjects. The fourth college i.e. College of Horticulture and Forestry, Thunag (Mandi) is located at Thunag District Mandi. This college offer BSc (Hons.) Horticulture and BSc (Hons.) Forestry degree programme. In addition, there are five Regional Research Stations, 12 Satellite Stations and five Krishi Vigyan Kendras (KVKs) situated in different zones of the State.

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Subject: Environmantal Science × Author: SHARMA, KOMAL × End date: 2016 × Start date: 2016 ×
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    ThesisItemOpen Access
    STUDIES ON HEAVY METAL TOXICITY AND BIOREMEDIATION THROUGH FUNGI
    (2016) SHARMA, KOMAL; THAKUR, MEENA
    ABSTRACT The present investigation entitled “Studies on heavy metal toxicity and bioremediation through fungi” was carried under laboratory conditions in the Department of Environmental Science of College of Forestry, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh during 2015 - 2016. The study comprised of 4 fungal strains viz. Aspergillus niger, Beauveria bassiana, Metarhizium anisopliae and Trichoderma harzianum which were tested for their toxicity and bioremediation for two heavy metals viz. cadmium (Cd) and mercury (Hg). The cultures of fungi were maintained under laboratory conditions in B.O.D at 25 ◦ C. The effect of graded doses of cadmium and mercury on various fungal parameters viz. radial growth, per cent growth inhibition, mycelium dry weight, spore germination percentage and uptake by fungal mycelia was studied. The whole set of experiment was laid in three replications in CRD. At 10 ppm concentration maximum radial growth was recorded for T.harzianum i.e 0.489 mm/h for cadmium and 0.484 mm/h for mercury. The mean radial growth decreased with increase in cadmium and mercury concentrations as compared to their respective controls. The dry weight of T. harzianum was significantly higher than other fungi i.e. 310 mg and 283.33 mg for cadmium and mercury respectively at 10 ppm concentration. At 10 ppm concentration M . anisopliea and B. bassiana showed maximum percent growth inhibition of 74.86 per cent and 71.71 per cent for cadmium and mercury, respectively. Spore germination percentage for all the fungi under two different doses (1 X 105spores/ml and 1 X 106spores/ml) was recorded against both the heavy metals. In all the fungi decreasing trend was observed i.e the per cent spore germination decreased with increase in the concentration of cadmium and mercury. The spore germination percentage in the presence of cadmium and mercury was in the order T. harzianum > A. niger > B .bassiana > M. anisopliae. Maximum cadmium uptake was recorded for T.harzianum (0.37 mg/g) followed by B. bassiana (0.20 mg/g) and maximum mercury uptake was recorded for M. anisopliae (0.20 mg/g) followed by T. harzianum and A. niger (0.13 mg/g). The order of fungi with respect to cadmium (Cd) uptake was T. harzianum > B. bassiana = M. anisopliae > A. niger and with respect to uptake of mercury (Hg) was M. anisopliae > A. niger > B. bassiana = T. harzianum. From the study it can be concluded that though the entomopathogenic fungus M. anisopliae had low radial growth, high growth inhibition and low spore germination at 10ppm but it had maximum mercury uptake among all the fungi and could be used for remediation of low levels of mercury (<10ppm). Whereas, the antagonistic fungus T. harzianum had maximum radial growth, lowest growth inhibition and highest spore germination and maximum uptake of Cadmium (Cd).The present study widens the scope for studying the effect of higher concentration of heavy metals in future to confirm the bioremediation ability of these fungal species.