Examines factors causing genetic purity loss (mechanical mixtures, mutations, natural outcrossing, selective influence, genetic shifts, developmental variation), safeguards for maintaining genetic purity during seed production, isolation distances, field inspections (roughing), and quality control measures for self/cross-pollinated crops.
Covers characters of good quality seed (genetic purity, physical purity, germination, vigor, health), factors affecting seed quality (production field, processing, storage), four seed classes (nucleus, breeder, foundation, certified seed), generation numbers, multiplication ratios, and maintenance requirements for self/cross-pollinated crops.
Detailed procedures for variety development through AICRP, multilocation testing (IVT/AVT 3-year trials), workshop identification, variety release process via CVRC (All India) and SVRC (state-specific), notification by Government of India, NSC/APSSDC/APSSCA functions, and committee composition for variety releasing decisions.
Covers seed production importance, historical development (Swedish seed association 1886, AOSCA 1969), India’s seed production evolution, NSC/SSC/SSCA establishment, Seed Act 1966 provisions, statuary bodies (Central Seeds Committee, Central Seed Certification Board, CSTL, SSTL), seed law enforcement, inspector powers, and offenses/penalties.
Comprehensive history of India’s seed industry from pre-independence (1925 Royal Commission) through 8 Five-Year Plans, covering NSC establishment (1963), Seed Act (1966), HYVP, Tarai Development Corporation, state seed corporations, ISST formation, National Seeds Programme, and policy evolution from 1920s to 1997.