Seed invigoration treatment with hormonal priming for improvement of quality seed production of rice
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Date
2023-12-21
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Seed Science and Technology, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia – 741252
Abstract
More than 60% of the world's population eats rice as staple food, making it both the most significant food in terms of human nutrition and calorie consumption. Poor field germination capacity, imminent water constraints, rising labour expenses and the continuously growing world population force us to make a better decision in order to ease the food crisis and increase rice output. For increasing seed vigour, synchronising germination, fostering the growth of seedlings, and increasing yield in a variety of crops, seed priming is an effective and useful technique (Bajehbaj et al., 2010). Pre-soaking seeds before planting encourages quick germination and growth, especially under difficult environmental circumstances. Indole acetic acid (IAA), gibberellic acid (GA3), and ascorbic acid priming, according to certain research, increases germination rate, plant growth, early growth, grain quantity and quality, and grain quality (Anosheh et al., 2011).
The research programme was formulated with seven priming materials on under both laboratory and field condition; also observed the deterioration pattern during storage with objectives: 1. optimizing the appropriate concentration of GA3and Kinetin for better performance with special reference to quality seed production. 2. Assessment of the effect of GA3and Kinetin on growth, development and yield attributing characters of rice. 3. Identification of proper seed storage condition(s) for maintenance of high seed vigour andviability of rice. Keeping these points in view, the present study was carried out with seven priming materials. Distinct findings were noted like germination parameters, different vigour, seedling parameters, yield and yield attributing characters. For storage experiment, packaging materials were Cloth bag, Cloth bag in desiccator, Aluminium foil, refrigerator, earthen pot, Brown paper packet, polythene packet (700 Gauge) and the finding were noted like germination parameters, different vigour, seedling parameters.
Seed invigoration with50 ppm GA3 was found very effective for seed germination, vigour, seedling parameters, yield and yield attributing characters. So, from the pre-sowing and field experiment, it was superior executant hormonal priming as it enhanced seed yield and most of the prime attributes.
For storage experiment it was observed that germination percentage decreasing with increasing storage period. Prescribed germination (80%) of rice was maintained for all the storage containers and condition upto six months; after that they were not maintaining minimum seed certification standard. As a result, it may not be advised to store rice seeds for longer than six months in all containers. When germination potential and vigour index are combined, it suggests that rice seed storage inside a refrigerator, or in polythene (700 gauge) and or in aluminium foil packets, may be advised because these storing materials preserved the rice's higher quality for up to nine months. In water and vapour permeable storing materials viz. cloth bag and brown paper packet quality o seed deteriorate quickly as seed moisture increasing with increasing storage period.