Comprehensive coverage of redgram/pigeonpea seed production including variety characteristics (short/medium/long duration), isolation requirements (50-100m), natural outcrossing (5-40%), field inspection stages, roughing procedures for off-types and diseased plants, field standards for foundation/certified seed, seed standards (physical purity 98%, germination 75%), and certification procedures.
Seed production protocols for sunflower varieties (isolation 400m, roughing insects, OD varieties 0.1%, field/seed standards) and hybrids (CMS A/B/R lines, 3:1 ratio planting), castor varieties and hybrids (pistillate/monoecious lines, isolation 300-1000m), hand pollination techniques, quality standards, and hybrid vigor exploitation.
Covers hybrid seed production in maize (single cross, double cross, three-way cross, top cross hybrids) and bajra including inbred development, crossing techniques, detasseling procedures, isolation distances (400m maize, 200-1000m bajra), composite/synthetic varieties, foundation seed production, field/seed standards, and certification requirements.
Detailed protocols for foundation and certified seed production of rice varieties (isolation requirements, rouging procedures, field standards, seed standards), sorghum varieties and hybrids (male sterility utilization, A/B/R lines, isolation distances 200-300m, detasseling/roughing), quality parameters, and certification procedures for both crops.
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.