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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: Forest Biology and Tree Improvement × Author: PANDURANGA GUNAGA, RAJESH × End date: 2008 × Start date: 2001 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    GENETIC VARIATION FOR PHENOLOGY IN A CLONAL SEED ORCHARD OF TEAK (Tectona grandis Linn, f.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) PANDURANGA GUNAGA, RAJESH; VASUDEVA, Dr. R.
    To elucidate clonal variations for phenology and its association with low fruit product'O" among teak Clonal Seed Orchards (CSOs), a study was conducted in a 19 year old CSO for a period of 13 months at Manchikere. Yellapura forest division. Inter-clonal differences among 24 teak clones for all phonological initiation events were significant suggesting a strong genetic basis. Strong provenance effect on phenology was also observed. Clones from central and southern provenances were early in initiating flower buds, flowers and peak flowering than those from northern. An overlap index to calculate the flowering synchrony among clones was developed for the first time. Clones of different provenances showed asynchronous flowering while there was a higher synchrony among clones within a provenance. Hence simple geographical continuity of clonal origin could be considered as a thumb rule while selecting clones for CSO. Partial flowering synchrony among clones can potentially violate panmixis and hence all the assumptions of establishing a CSO. Matured non-flowering rametes within a teak clone can also reduce fruit production of a CSO. This trait was genetically controlled and clones derived from older ortets tend to have higher per cent of non-flowering rametes. In general, time of initiation for all phenophases showed higher broad sense heritability, suggesting that these initiation events were controlled by genetic factors. However, durations of all phenophases were environmentally regulated. The highest genetic gain was (27.78%) obtained for time of leaf flush initiation. Clones that initiated leaf flushing early and possessed longer peak-flowering duration tend to produce higher number of fruits per inflorescence. Hence these two traits should be considered while selecting trees for CSO in order to increase the fruit yield. However, clones that coincide flowering with peak rainy days tend to show lower fruit set and hence should be avoided.