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SST 515 EMERGING TREND IN SEED QUALITY ENHANCEMENT                                                                               (2L+1P) III

Objective
To update knowledge on seed quality enhancement technologies and their application.

Theory

UNIT I
Concept and significance of seed quality enhancement; physical, chemical and pesticidal seed treatments, history, principles and methods of seed treatment, methodology and factors affecting seed enhancement treatments.

UNIT II
Seed priming: physiological and biochemical basis, types of priming technology, biochemical and molecular changes associated, pre-germination, film coating and pelleting, seed tapes, seed mats, seed colouring, biopriming.

UNIT III
Synthetic seeds – Aim and scope for synthetic seeds, historical development, somatic embryogenesis, somaclonal variation and their control, embryo encapsulation systems, hardening of artificial seeds, cryo-preservation, storage of artificial seeds, desiccation tolerance, use of botanicals in improving seed quality etc.

Practicals
Seed treatments – methods and techniques, equipments required for seed treatment, film coating; seed invigoration /priming - hydration and dehydration, PEG priming, solid matrix priming, bio priming, effects of  priming; methods for hydrogel encapsulation of  ar tificial endosperm, hydrophobic coating etc.; protocols for production of  synthetic seeds, Visit to leading Seed Companies to study the seed treatment processes.

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