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University of Agricultural Sciences, Bengaluru

University of Agricultural Sciences Bangalore, a premier institution of agricultural education and research in the country, began as a small agricultural research farm in 1899 on 30 acres of land donated by Her Excellency Maharani Kempa Nanjammanni Vani Vilasa Sannidhiyavaru, the Regent of Mysore and appointed Dr. Lehmann, German Scientist to initiate research on soil crop response with a Laboratory in the Directorate of Agriculture. Later under the initiative of the Dewan of Mysore Sir M. Vishweshwaraiah, the Mysore Agriculture Residential School was established in 1913 at Hebbal which offered Licentiate in Agriculture and later offered a diploma programme in agriculture during 1920. The School was upgraded to Agriculture Collegein 1946 which offered four year degree programs in Agriculture. The Government of Mysore headed by Sri. S. Nijalingappa, the then Chief Minister, established the University of Agricultural Sciences on the pattern of Land Grant College system of USA and the University of Agricultural Sciences Act No. 22 was passed in Legislative Assembly in 1963. Dr. Zakir Hussain, the Vice President of India inaugurated the University on 21st August 1964.

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Subject: Environmental Science × End date: 2010 × Start date: 2010 × Type: Thesis × Rating Count: 5 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    ECOLOGICAL NICHE MODELING FOR CHEMICAL PROSPECTING OF FOREST SPECIES: A CASE STUDY IN Nothapodytes nimmoniana (Graham) Mabb.
    (University of Agricultural Sciences, Bangalore, 2010-01-12) RAGHAVENDRA., H. P.; Ganeshaiah, K. N.
    Ecological Niche Modeling (ENM) has become powerful tool in predicting the geographic distribution of a given species. Being modelling process, it maps the similar habitat conditions corresponding to the habitat type of the places of known occurrence of the species and stratifies the area from most suitable to least suitable habitat for the species occurrences. However, in this study an attempt has been made to test the potentiality of ENM in prospecting for the populations that yield high level of seconday metabolites in particular, CPT. The underlying assumption of ENM here is, the plants in most suitable area are expected to show higher fitness , higher regeneration status, and hence the traits that confirms the fitness would be expected to be high in most suitable area compared to least suitable area. There are hardly any attempts made to this important assumption, however, in this study we provide evidence towards this assumption in specific metabolite, CPT. Therefore we proposed to use ENM to predict the habitat suitability for Nothapodytes nimmoniana (Graham), which produce an anticancer drug, Comptothecin (CPT). Firstly we developed niche map for N. nimmoniana using DIVA- GIS and Maxent. However in this study to validate the ENM assumption, density, regeneration, girth of trees, fluctuating leaf asymmetry, and specific leaf weight were considered as fitness measures. Result indicated that, mean % CPT content is significantly higher in predicted most suitable habitat compared to least suitable habitat wherein population showed higher regeneration status and higher fitness. Therefore, we concluding that, production of CPT in N. nimmoniana could be purely a spin-off of growth and reproduction. Thus, results from this study validated the assumption of ENM accordingly suggested that, ENM could be potentially used to predict the niches of high fitness and area with high level of secondary metabolites.