Thumbnail Image

Acharya N G Ranga Agricultural University, Guntur

The Andhra Pradesh Agricultural University (APAU) was established on 12th June 1964 at Hyderabad. The University was formally inaugurated on 20th March 1965 by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India. Another significant milestone was the inauguration of the building programme of the university by Late Smt. Indira Gandhi,the then Hon`ble Prime Minister of India on 23rd June 1966. The University was renamed as Acharya N. G. Ranga Agricultural University on 7th November 1996 in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga, who rendered remarkable selfless service for the cause of farmers and is regarded as an outstanding educationist, kisan leader and freedom fighter. HISTORICAL MILESTONE Acharya N. G. Ranga Agricultural University (ANGRAU) was established under the name of Andhra Pradesh Agricultural University (APAU) on the 12th of June 1964 through the APAU Act 1963. Later, it was renamed as Acharya N. G. Ranga Agricultural University on the 7th of November, 1996 in honour and memory of the noted Parliamentarian and Kisan Leader, Acharya N. G. Ranga. At the verge of completion of Golden Jubilee Year of the ANGRAU, it has given birth to a new State Agricultural University namely Prof. Jayashankar Telangana State Agricultural University with the bifurcation of the state of Andhra Pradesh as per the Andhra Pradesh Reorganization Act 2014. The ANGRAU at LAM, Guntur is serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication. Genesis of ANGRAU in service of the farmers 1926: The Royal Commission emphasized the need for a strong research base for agricultural development in the country... 1949: The Radhakrishnan Commission (1949) on University Education led to the establishment of Rural Universities for the overall development of agriculture and rural life in the country... 1955: First Joint Indo-American Team studied the status and future needs of agricultural education in the country... 1960: Second Joint Indo-American Team (1960) headed by Dr. M. S. Randhawa, the then Vice-President of Indian Council of Agricultural Research recommended specifically the establishment of Farm Universities and spelt out the basic objectives of these Universities as Institutional Autonomy, inclusion of Agriculture, Veterinary / Animal Husbandry and Home Science, Integration of Teaching, Research and Extension... 1963: The Andhra Pradesh Agricultural University (APAU) Act enacted... June 12th 1964: Andhra Pradesh Agricultural University (APAU) was established at Hyderabad with Shri. O. Pulla Reddi, I.C.S. (Retired) was the first founder Vice-Chancellor of the University... June 1964: Re-affilitation of Colleges of Agriculture and Veterinary Science, Hyderabad (estt. in 1961, affiliated to Osmania University), Agricultural College, Bapatla (estt. in 1945, affiliated to Andhra University), Sri Venkateswara Agricultural College, Tirupati and Andhra Veterinary College, Tirupati (estt. in 1961, affiliated to Sri Venkateswara University)... 20th March 1965: Formal inauguration of APAU by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India... 1964-66: The report of the Second National Education Commission headed by Dr. D.S. Kothari, Chairman of the University Grants Commission stressed the need for establishing at least one Agricultural University in each Indian State... 23, June 1966: Inauguration of the Administrative building of the university by Late Smt. Indira Gandhi, the then Hon`ble Prime Minister of India... July, 1966: Transfer of 41 Agricultural Research Stations, functioning under the Department of Agriculture... May, 1967: Transfer of Four Research Stations of the Animal Husbandry Department... 7th November 1996: Renaming of University as Acharya N. G. Ranga Agricultural University in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga... 15th July 2005: Establishment of Sri Venkateswara Veterinary University (SVVU) bifurcating ANGRAU by Act 18 of 2005... 26th June 2007: Establishment of Andhra Pradesh Horticultural University (APHU) bifurcating ANGRAU by the Act 30 of 2007... 2nd June 2014 As per the Andhra Pradesh Reorganization Act 2014, ANGRAU is now... serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication...

News

https://angrau.ac.in/ANGRU/Library_Resources.aspx

Browse

20171
Reset filters
Subject: Entomology × Author: SIVA KUMAR, GOLLA × End date: 2017 × Start date: 2017 × Thesis Type: Ph.D ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    BIOCHEMICAL AND MOLECULAR MECHANISMS OF RESISTANCE TO Helicoverpa armigera (Hubner) IN WILD RELATIVES OF CHICKPEA
    (Acharya N.G. Ranga Agricultural University, 2017) SIVA KUMAR, GOLLA; RAJASEKHAR, P
    The present studies on “Biochemical and molecular mechanisms of resistance to Helicoverpa armigera (Hubner) in wild relatives of chickpea” were carried out at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, during 2014-16. A total of 20 accessions (15 wild relatives and five varieties of cultivated chickpea) were used to evaluate the mechanism of resistance to H. armigera. Under field conditions, during post-rainy seasons 2014-15 and 2015-16, all genotypes of wild relatives of chickpea recorded less number of H. armigera larvae, low visual leaf damage rating and per cent pod damage compared to cultivated chickpea. The genotypes IG 70012, PI 599046, IG 70022, PI 599066, IG 70006, IG 70018 (Cicer bijugum), ICC 506EB, ICCL 86111 (resistant checks), IG 72933, IG 72953 (C. reticulatum) IG 69979 (C. cuneatum) and IG 599076 (C. chrossanicum) showed high levels of antixenosis for oviposition of H. armigera under multi-, dual- and no-choice cage conditions. Studies on detached leaf assay revealed that the genotypes IG 70012, IG 70022, IG 70018, IG 70006, PI 599046, PI 599066 (C. bijugum), IG 69979 (C. cuneatum), PI 568217, PI 599077 (C. judaicum) and ICCW 17148 (C. microphyllum) showed less damage rating and low larval weights compared to susceptible checks. Larval survival was greater on the wild relatives than on the cultivated chickpea. Detached pod assay studies revealed that all wild relatives of chickpea exhibited less damage rating, lower per cent pod damage and lower percentage of weight gained by thirdinstar larva compared to cultivated chickpea. Survival and development of H. armigera on artificial diet impregnated with lyophilized leaf powders revealed that all wild relatives of chickpea genotypes showed high levels of antibiosis to H. armigera compared to cultivated chickpea in terms of lower larval survival, per cent pupation and adult emergence, decreased larval and pupal weight, prolonged larval and pupal developmental periods and reduced fecundity. xvi Among morphological characters, glandular and non-glandular trichomes showed negative association with oviposition under multi-choice and no-choice conditions. Glandular trichomes had significant negative association with damage rating, whereas non-glandular trichomes had significant positive association with damage rating and larval weight but negative association with larval survival in detached leaf assay. Pod wall thickness showed significant negative association with damage rating and per cent pod damage in detached pod assay. HPLC finger prints of leaf organic acids revealed a negative association of oxalic acid with oviposition, while malic acid showed positive and significant association with oviposition under multi- and no-choice conditions. Oxalic acid and malic acid had significant and negative correlation with larval survival in detached leaf assay, which indicates that higher amounts of these acids in cultivated chickpea resulted in reduced larval survival compared to wild relatives. The flavonoid compounds viz., chlorogenic acid, ferulic acid, naringin, 3, 4- dihydroxy flavones, quercetin, naringenin, genestein, formononetin and biochanin A identified through HPLC finger prints exhibited negative effects on survival and development of H. armigera reared on artificial diet impregnated with lyophilized leaf powders. Proteins and phenols showed negative effect, while tannins and total soluble sugars showed positive effect on survival and development of H. armigera reared on artificial diet with lyophilized leaf powders of wild relatives of chickpea. Zymogram analysis revealed presence of 3 to 7 trypsin inhibitor (TI) isoforms in all 20 genotypes. The genotypes, IG 70018, IG 70012, IG 70006, IG 70022, PI 599066, IG 72933, IG 72953 and IG 69979 showed higher inhibitory activity of H. armigera gut (HG) proteases, while genotypes PI 510663, PI 599109, PI 568217 and ICCW 17148 showed low inhibitory activity under in vitro conditions. Studies on hemagglutination of lectins revealed that wild relatives of chickpea genotypes showed more agglutination even at less concentration. Schiff’s base staining of lectins revealed that only one isoform with a molecular weight of 29 kDa was observed in wild relatives of chickpea. GC-MS profile peaks of leaf surface chemicals identified with hexane extracts showed 56 peaks in all genotypes. Correlation studies with detached leaf assay and oviposition preference indicated presence of feeding and oviposition repellents as well as phagostimulants and oviposition attractants. A total of 107 GC-MS profile peaks were identified with methanol extracts. Correlation studies indicated that methanol extracts had higher amount of phagostimulants and oviposition repellents than antifeedants and oviposition attractants. The 26 SSR markers used for assessing genetic diversity of wild relatives of chickpea detected a total of 186 alleles with an average of 7.15 alleles per marker. PIC values varied from 0.21 (CaM2064) to 0.89 (CaM0958, ICCM0249 and TAA58). Gene diversity varied from 0.24 (CaM2064) to 0.90 (CaM0958, ICCM0249 and TAA58). The average observed heterozygosity was 0.20. The dendrogram based on UPGMA showed that cultivated chickpea showed a closer genetic relation with the C. reticulatum, while, the species C. microphyllum, C. judaicum, C. bijugum and C. pinnatifidum were placed in other cluster. The other species C. cuneatum was placed in separate cluster indicated that it is distantly related to species in other two clusters.