DESCRIPTION OF COURSES

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PGR 601 ADVANCES IN SEED PHYSIOLOGY IN RELATION TO GERMPLASM CONSERVATION                                                                            (2L+1P) II

Objective
To provide an insight into physiological processes governing seed quality and its survival in relation to germplasm conservation and seed science and technology.

Theory

UNIT I
Seed as genetic material for conservation; seed structure, development and physiological maturity; seed germination and growth; mobilization of reserves and their control processes.

UNIT II
Seed storage behaviour and their importance in conservation; post-collection care, see processing for short, medium and long-term storage

UNIT III
Seed germination, viability and vigour; concept and testing methods for assessment of vigour and longevity; seed dormancy and methods for breaking dormancy; mid-storage treatments; invigoration techniques and seed hardening.

UNIT IV
Seed storage for long-term conservation and factors affecting seed longevity; seed moisture content, storage temperature and their influence on storability; artificial aging and controlled deterioration test; ultra-desiccation techniques for germplasm conservation.

UNIT V
Physiological, biochemical and genetic indices of  seed deterioration, seed conservation and exchange.

Practicals
Identification of seeds based on seed morphology and structure; Testing seed viability and vigour; Seed Longevity and accelerated ageing test in different types of seeds; Determining causes for dormancy, hard seededness and physiological immaturity; Developing short and medium-term conservation strategies for difficult-to-store seeds; Seed quality enhancement through seed priming; Ultra-desiccation of  seeds in relation to seed longevity; Biochemical manifestation of  seed deterioration.

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