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

20191
Reset filters
Subject: Plant Breeding × Author: PRIYA, SHEPHALI × End date: 2019 × Start date: 2019 × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    STUDIES ON INDUCED MUTATAION IN GLADIOLUS (Gladiolus hybrida L.) THROUGH GAMMA RAYS
    (AAU, Jorhat, 2019-07) PRIYA, SHEPHALI; Phookan Borkakati, Reena
    Gladiolus (Gladiolus hybrida L.) is one of the important bulbous crop, cultivated in various parts of the country. It is an important bulbous crop which occupies important position among cut flowers in domestic as well as international market so, mutation is important for obtaining variety easily. In the present investigation to find out the genetic variability for morphological and quality traits, their association and mutation frequency, effectiveness, efficiency of gamma rays in four genotypes for 13 characters. A factorial randomized block design was conducted in four genotypes which is treated with six doses of gamma rays. The analysis of variance for factorial randomized block design it was observed that significant variation was there for all characters except no. of leaves per plant among 4 varieties. The character spike length, no. of spike per plant exhibited highest PCV, GCV in M1V1 generation. The character plant height, no. of spike exhibited highest PCV, GCV in M1V2 generation. Heritability with genetic advance was found to be high in vase life, days to sprouting, spike length, rachis length and no. of floret per spike in M1V1 generation. In M1V2 generation, heritability high days to sprouting, spike length, vase life, days to spike initiation, breadth of leaf. The effect of interaction between variety and doses indicated that the better plants was found at 20 Gy and as decreased as the doses were increases ‘Red Majesty’ is the best performed variety for breadth of leaf, no. of floret per spike, length of floret, breadth of floret, vase life, no. of spike per plant followed by Red Candiman, Pasibica Beauty. In the correlation studies no. of spike per plant showed a highly significant and positive correlation with the characters plant height, spike length, rachis length, no. of floret per spike, length of floret and vase life. The study of path analysis revealed that the characters no. of floret per spike, breadth of leaf and days to spike initiation had direct positive effect on no. of spike whereas days to sprouting, rachis length, breadth of floret, plant height and vase life showing negative direct effect. Highest mutation frequency observed in 40Gy, mutagenic effectiveness in 20Gy and efficiency in 50Gy of variety Red majesty.