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Assam Agricultural University, Jorhat

Assam Agricultural University is the first institution of its kind in the whole of North-Eastern Region of India. The main goal of this institution is to produce globally competitive human resources in farm sectorand to carry out research in both conventional and frontier areas for production optimization as well as to disseminate the generated technologies as public good for benefitting the food growers/produces and traders involved in the sector while emphasizing on sustainability, equity and overall food security at household level. Genesis of AAU - The embryo of the agricultural research in the state of Assam was formed as early as 1897 with the establishment of the Upper Shillong Experimental Farm (now in Meghalaya) just after about a decade of creation of the agricultural department in 1882. However, the seeds of agricultural research in today’s Assam were sown in the dawn of the twentieth century with the establishment of two Rice Experimental Stations, one at Karimganj in Barak valley in 1913 and the other at Titabor in Brahmaputra valley in 1923. Subsequent to these research stations, a number of research stations were established to conduct research on important crops, more specifically, jute, pulses, oilseeds etc. The Assam Agricultural University was established on April 1, 1969 under The Assam Agricultural University Act, 1968’ with the mandate of imparting farm education, conduct research in agriculture and allied sciences and to effectively disseminate technologies so generated. Before establishment of the University, there were altogether 17 research schemes/projects in the state under the Department of Agriculture. By July 1973, all the research projects and 10 experimental farms were transferred by the Government of Assam to the AAU which already inherited the College of Agriculture and its farm at Barbheta, Jorhat and College of Veterinary Sciences at Khanapara, Guwahati. Subsequently, College of Community Science at Jorhat (1969), College of Fisheries at Raha (1988), Biswanath College of Agriculture at Biswanath Chariali (1988) and Lakhimpur College of Veterinary Science at Joyhing, North Lakhimpur (1988) were established. Presently, the University has three more colleges under its jurisdiction, viz., Sarat Chandra Singha College of Agriculture, Chapar, College of Horticulture, Nalbari & College of Sericulture, Titabar. Similarly, few more regional research stations at Shillongani, Diphu, Gossaigaon, Lakhimpur; and commodity research stations at Kahikuchi, Buralikson, Tinsukia, Kharua, Burnihat and Mandira were added to generate location and crop specific agricultural production packages.

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20221
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Subject: Plant Pathology × Author: GOGOI, MOUSUMI × End date: 2022 × Start date: 2020 × Type: Thesis ×
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    ThesisItemOpen Access
    IDENTIFICATION AND CHARACTERIZATION OF BACTERIAL PATHOGENS IN MEDICINAL, AROMATIC AND SPICE PLANTS OF ASSAM
    (AAU, Jorhat, 2022) GOGOI, MOUSUMI; Borah, P K
    Accumulated knowledge of medicinal, aromatic and spice plants from ancient times helps to improve human health and life from generation to generation. There is tremendous scope for the extensive development of these important plants. But different diseases cause considerable loss of these plants that result in substantial economic loss to farmers. Although bacterial diseases cause severe loss to different medicinal, aromatic and spice plants in different states of our country, not much work had been done on bacterial diseases of these crops in Assam including other Northeastern states. Therefore, the present study was made to isolate, characterize and identify some of the bacterial pathogens associated with diseases of medicinal, aromatic and spice plants in Assam. Disease samples from medicinal, aromatic and spice plants viz., Chilli (Capsicum annum), Ginger (Zingiber officinale), Coriander (Coriandrum sativum), Betelvine (Piper betle), Pennywort (Centella asiatica), Giloy (Tinospora cordifolia) and Cardamom (Elettaria cardamomum) were collected from Golaghat, Jorhat, Karbi Anglong and Nagaon district of Assam. On the basis of cultural, morphological and biochemical studies the seven bacterial isolates were identified as genus Xanthomonas (in Chilli, Coriander, Betelvine and Giloy), Pantoea (in Pennywort), Bacillus (in Ginger) and Pseudomonas (in Cardamom). Further molecular characterization and phylogenetic analysis were done to identify the different bacterial isolates i.e., isolate MGH1 GOLAGHAT as Xanthomonas axonopodis pv. vesicatoria (bacterial leaf spot of chilli), isolate MGH2 GOLAGHAT as Bacillus pumilus (rhizome rot of ginger), isolate MGH3 JORHAT as Xanthomonas campestris pv. coriandri (bacterial leaf spot of coriander), isolate MGH4 GOLAGHAT as Xanthomonas axonopodis (bacterial leaf spot of betelvine), isolate MGH5 JORHAT as Pantoea ananatis (bacterial leaf spot of pennywort), isolate MGH6 JORHAT as Xanthomonas campestris (bacterial leaf spot of giloy) and isolate MGH7 JORHAT as Pseudomonas oryzihabitans (bacterial blight of cardamom).