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International Journal of Recent Trends in Science and Technology, ISSN 2277-2812 E-ISSN: 2249-8109

Volume 12, Issue 1, September 2014 pp 123-130

Research Article

Effect of sodium azide on indigenous rice (Oryza sativa L.) varieties of Nagaland

A. Ali1, N. Bordoloi2, S. Chand3

1Assistant Professor, 2M.Sc. Student, Department of Botany, University of Science and Technology, Meghalaya, INDIA.

3Head, School of Life Sciences, Devi Ahilya Vishwavidyalaya, Indore, Madhya Pradesh, INDIA.

Introduction: The mutagenic effects of sodium azide (SA) on seed germination and some agro-metrical traits of M1 (M=filial mutant) generation of two indigenous rice varieties (Oryza sativa L.), Mangtangtsuk (N3) and Makuktanakla (N7), of Nagaland were studied. Seeds of the rice varieties were treated with 0.5%, 1.0% and 1.5% SA before they were sown –with their respective controls – in order to assess the effects of the different mutagen treatments on the M1 generation of the rice plants. Results showed both negative and positive shifts of characters as a result of SA treatments. The two varieties showed highly significant inter and intra varietal differential response to SA application. Seed germination, seedling height, tiller/plant was reduced at higher concentration of mutagen. Seedling survival was significantly decreased in most of the treatments. Plant height was increased in all the treatments. Shift in mean were both in positive and negative directions in most of the treatments with elevated values of coefficient of variation (CV).