Thumbnail Image

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.

Browse

20201
Reset filters
Subject: Agricultural Biochemistry × Author: Baruah, Madhusmita × Type: Thesis × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    STUDIES ON METABOLISM OF IRON IN RICE
    (AAU, Jorhat, 2020-10) Baruah, Madhusmita; Das, Priyanka
    Rice, though rich in carbohydrates and proteins, lacks micronutrients like iron and zinc. Considering several disadvantages of fortification of iron in food, emphasis is given on biofortification of iron in plants, including rice grains. Though, there exists threat of iron toxicity in some of the rice varieties grown in lowland acid soils of this region, the present study was conducted to know the effect of two different levels of soil iron content on some biochemical parameters including grain iron content of rice plant. Three rice varieties, including two popular varieties of Assam, Ranjit and Mahsuri, and one traditional pigmented variety Kajoli chakua were cultivated in pots at two different levels of iron: marked as control and treated; in which DTPA extractable iron content of soil were 159.40 mg/kg and 182.35 mg/kg, respectively. Within the range of soil DTPA extractable iron content (159.40 mg/kg - 182.35 mg/kg), iron toxicity was not observed. The analysis revealed that the iron content, chlorophyll content of leaves and the activities of antioxidative enzymes viz. peroxidase, superoxide dismutase and catalase varied significantly at different growth stages. Among the three rice varieties, uptake of iron in rice leaves and grains were found in the order Ranjit > Kajoli chakua > Mahsuri. The iron content of brown rice significantly differed according to its position on the rachis, the order being: top primary rachis > top secondary rachis > middle primary rachis > middle secondary rachis > bottom primary rachis > bottom secondary rachis. The iron content of brown rice of all the three varieties increased significantly (more than 100 % than that of control) in plants grown in soils of higher iron content. Specific activity of all the three enzymes showed that higher the iron content, more the specific activity. Considering initial iron status of the soil, application of iron solution of suitable concentration may be advocated for increasing grain iron content of these three rice varieties.