Thumbnail Image

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.

Browse

2018 - 201912020 - 20221
Reset filters
Subject: Plant Biotechnology × Author: ANTRE SURESH, HARIBHAU × Start date: 1960 × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    ThesisItemEmbargo
    GENETIC ASSOCIATION MAPPING TO IDENTIFY QTLs FOR DROUGHT TOLERANCE AND EXPRESSION ANALYSIS OF SELECTED GENES UNDER DROUGHT ENVIRONMENT IN FINGER MILLET [Eleusine coracana (L.) Gaertn]
    (University of Agricultural Sciences, Bangalore, 2022-09-22) ANTRE SURESH, HARIBHAU; ANTRE SURESH, HARIBHAU; ANTRE SURESH, HARIBHAU; Ravikumar, R. L.; Ravikumar, R. L.; Ravikumar, R. L.
    Although the finger millet is renowned for its drought tolerance, drought stress at reproductive stage dramatically reduces the seed yield. Three hundred and fifty diverse genotypes of finger millet were evaluated for sixteen agro-morphological traits under drought stress (DS) and well watered (WW) conditions over the two years viz. summer 2019 and summer 2020 at GKVK, Bangalore. The DS at initial reproductive stage significantly affected the performance of the genotypes for seed yield and component traits. The genotype and genotype × environment interaction biplot method was used to identify high yielding and stable genotypes under WW (GE-5078, GPU-66), DS (GE-2644, GE-3605) and across WWDS (GE-2644) conditions. Stepwise multiple linear regression and principal component analysis under WW and DS indicated that, total earhead weight per plant and main earhead weight are the important traits for both the environments. Genome-wide SNPs were identified by re-sequencing of 350 genotypes and the marker trait association analysis revealed 49 SNPs under WW and 34 SNPs under DS conditions were associated with different agro morphological and drought tolerance related traits. Six each drought tolerant and drought susceptible genotypes were evaluated in replicated field trial for reproductive stage drought stress tolerance during summer 2021. The DS at reproductive stage showed significant effect on number of pollen grains per anther, pollen sterility, relative water content and chlorophyll content. Drought tolerant genotypes recorded significantly less pollen sterility and higher relative water content compared to susceptible genotypes. Two contrasting genotypes, GE-1234 and GE-4719 were used to study the expression of Sucrose synthase-1 (SUS1), Cell wall invertase (INCW), Invertase-1 (IVR1) and two uncharacterized genes (GRMZM2G162968 and GRMZM5G844309) in the immature anthers under DS. The expression level of SUS1, INCW, IVR1 and GRMZM2G162968 were reduced under DS conditions and the extent of reduction was influenced by the drought tolerance of the genotypes.
  • Thumbnail Image
    ThesisItemOpen Access
    PERFORMANCE OF EARLY GENERATION PROGENIES DERIVED THROUGH POLLEN SELECTION FOR HEAT TOLERANCE AND SEED YIELD IN MAIZE (Zea mays L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2018-08-02) ANTRE SURESH, HARIBHAU; RAVIKUMAR, R. L.
    Thirty six F3 progenies were evaluated in two replications under field condition for heat tolerance, seed yield and yield components. The progenies were derived through different cycles of pollen selection for heat tolerance - pollen selection in F1 and F2 (GG), pollen selection only in F1 (GC) and no pollen selection (CC). The pollen selection treatment recorded significant variability for SPAD Chlorophyll Meter Reading (SCMR), anthesis-silking interval (ASI), membrane leakage, days to anthesis and plant height. The GG group of progenies recorded higher mean values for seed yield and yield related component traits compared to CC group under heat stress. Further, the pollen selection treatment did not show any negative influence when the progenies were grown under normal conditions. Twenty five F4 lines comprising of five lines each from GGG (Pollen selection in F1, F2 and F3), GCG (Pollen selection in F1 and F3 but no pollen selection in F2), GGC (Pollen selection in F1 and F2 but no pollen selection in F3), GCC (Pollen selection in F1 but no pollen selection in F2 and F3), CCC (without pollen selection) were tested for seedling heat tolerance. The pollen selection cycles recorded significant effect on seedling tolerance for F4 progenies of GGG treatment recorded higher root length, shoot length and seedling establishment confirming the utility of pollen selection in early generation. The GGG lines possessed higher frequency of male parent alleles as indicated by SSR markers thus emphasizing the potentiality of this method through molecular genetic evidence.