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 Biotechnology × Author: DAS, KINGSUK × Start date: 2020 ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    GENOMIC STUDIES FOR AROMA IN JOHA RICE OF ASSAM
    (AAU, Jorhat, 2020-09) DAS, KINGSUK; Baruah, A. R.
    The badh2 locus for aroma in Basmati and Jasmine rice has been extensively studied and the present study was intended to target the functional marker for aroma, badh2 to determine the fidelity of the marker and validate the same to group the joha rice of Assam in particular. A total of 90 small-grained rice cultivars including 60 joha rice was included in the study. All the fieldwork and laboratory work were carried out at the ICR farm and in the Department of Agricultural Biotechnology, AAU, respectively. The study revealed that the majority of the joha cultivars (44) and 22 non-joha types including four chakhow, three jeera rice were detected with the aroma allele for badh2. The cultivars could be grouped into three based on the results of marker profile using the primer pairs for badh2 (Group I: cultivars possessing aromatic badh2 allele, Group II: cultivars with non-aromatic badh2 allele and Group III: Heterozygous for badh2). The cultivars were genotyped further using 23 markers linked to aroma (other than badh2), and those loci (mostly minor) were mapped previously flanking the regions of badh2. The markers used in the study detected 43.47% polymorphism, and only those polymorphic marker loci were analysed for allelic composition among the three groups of cultivars. The number of marker alleles ranged from 2-4 with a mean of 3.11. Except for 10L03, RM223, RM282, the rest of the markers showed higher homozygosity, indicating that high resolution of allelic difference among the groups of cultivars would be possible. The cultivars of Group I, i.e., with aromatic badh2 are distinctly unique from the other two groups, suggesting the allelic composition within the Group I was intact (share the same allele most of the time) and could be different from Groups II and III at many times. The Group I was detected a significantly higher number of expected alleles as compared to the other two groups except for RM 282, indicating the determinant of aroma might be governed by badh2 along with some other minor loci in the case of Group I. The present study could throw some light that in joha rice cultivars, the involvement of badh2 along with few other minor loci is mainly responsible for the aroma.