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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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2017 - 201912020 - 20211
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Subject: Horticulture × Author: DEEKSHA RAJ, N. × Start date: 2006 ×
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    ThesisItemOpen Access
    CONSERVATION OF RET ORCHID SPECIES OF WESTERN GHATS REGION OF KODAGU DISTRICT, KARNATAKA STATE: Studies on Microhabitat, Morphological Characteristics, and Micropropagation of Selected Species
    (University of Agricultural Sciences, Bangalore, 2021-07-30) DEEKSHA RAJ, N.; B. N., SATHYANARAYANA
    An investigation was conducted to study the Microhabitat, Morphological characteristics, and Micropropagation of selected RET orchid species. Among the species studied in Western Ghat belts of Kodagu region, many species of Dendrobium, Bulbophyllum sterile, Rhynchostylis retusa, and Pholidota imbricata were found settled on a wide range of host trees but had a higher abundance on select native species such as Ficus mysorensis, Careya arborea, Mangifera indica, and Nothopegia racemosa. In the present study, most species studied for morphological characteristics were from tribe Malaxideae. In studies in vitro, PLBs were best initiated on half-strength semi-solid MS media. Among the different orchid sp., Dendrobium ovatum produced PLBs at the earliest (20 days) after culture initiation on nutrient media. Number of shoots (11.20) their length (5.20 cm) and number of leaves (6.40) were maximum in cultures raised on media containing 2 mg L-1 of 6-benzylaminopurine (BAP) with constant 0.5 mg L-1 Naphthalene Acetic Acid (NAA) in Dendrobium heterocarpum and Polystachya. concreta and Dendrobium macrostachyum at 90 days after culture. Investigations using coconut water (CW) as an organic adjuvant at a concentration 15 per cent (along with BAP) showed very promising results (3.40 days) in enhancing formation of protomeristem from seeds of Dendrobium ovatum cultured. In MS media with coconut water 15 per cent registered maximum (12.80) shoots in Dendrobium heterocarpum. The longest shoot length (5.84 cm) and number of leaves (8.60) were recorded in media supplemented with 2.0 mg L-1 BAP + 0.5 mg L-1 NAA and CW 15 per cent in Polystachya concreta and Dendrobium heterocarpum. The first visible root was noted in media containing 2 mg L-1 Idolebutyric acid (IBA) at 8 days after root initiation in Dendrobium ovatum. Among all the species studied longest (7.20 cm) root length was recorded in Dendrobium macrostachyum in media supplemented with 1 mg L-1 IBA at 90 days after root initiation. The results of the studies presented here have implications for the conservation of RET orchid species Western Ghats kodagu district.
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    ThesisItemOpen Access
    IN VITRO STUDIES IN CHRISTMAS CACTUS [Schlumbergera truncata (Haw.) Moran.]
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-07) DEEKSHA RAJ, N.; SATHYANARAYANA, B. N.
    Christmas cactus [Schlumbergera truncata (Haw.) Moran.], is a highly valued ornamental potted plant in the commercial market. The plants are propagated by seeds or vegetatively by cuttings and grafting. Seeds are difficult to obtain, and their germination rates are low. Traditional vegetative reproduction in vivo, on the other hand, may be less efficient insofar as a limited number of plants that can be obtained. Pursuing in vitro methodology of plant propagation appears promising to achieve large scale production. In the present investigation, two different explant types from different position of the stem formed multiple shoots on Murashige and Skoog (MS) medium having 6- Benzylaminopurine (BAP) and Naphthalene acetic acid (NAA), BAP at 3mg/l proved to be more effective for increased shoot proliferation and shoot growth from different explant types. Longitudinally sliced segment of explant taken from apical position of the stem when cultured on MS medium supplemented with 3 mg/l BAP gave maximum shoot proliferation (5.6 mean numbers of shoots). Similarly, longitudinally sliced stem segment of explant from mid position with 3 mg/l of BAP (2.3 mean numbers of shoots) also gave good shoot proliferation as compared to transverse sections of stem segments taken from different position of the stem. This study shows that the explant taken from different position of the stem such as apical and mid portion and the kind of sections made such as longitudinally sliced segment and transversely sliced segment, play a significant role in achieving shoot proliferation and thus determining the success in large scale production.