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Table of Contents – Seed Production and Certification
- Seed as a Basic Input and Seed Quality
- Seed Multiplication and Seed Supply System
- Genetic and Physical Purity in Seed Production
- Nucleus, Breeder, Foundation and Certified Seed Production
- Principles and Systems of Seed Production
- Seed Production in Self-Pollinated Crops
- Seed Production in Cross-Pollinated Crops
- Seed Production in Pulses and Oilseed Crops
- Seed Production in Fibre and Vegetatively Propagated Crops
- Hybrid Seed Production
- Seed Certification: Concepts, Organization and Standards
- Seed Certification Procedures and Programme Management
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Syllabus
Content: Importance of seed as basic input in agriculture; Seed quality concept and importance; Generation system of seed multiplication -Varietal replacement rate, Seed multiplication ratios, Seed replacement rate, Seed renewal period and seed demand and supply; Various factors influencing seed production –Physical and Genetic purity in seed production; Factors responsible for varietal and genetic deterioration. Nucleus seed production and its maintenance - Maintenance of parental lines of hybrids, Production of breeder, foundation and certified seed and their quality maintenance; Principles of seed production in self- and cross-pollinated crops; Hybrid seed production - system and techniques involved in Seed village concept; Organic seed production and certification. Principles of seed production in field crops; Floral structure, pollination mechanism and seed production techniques in self- and cross-pollinated cereals and millets. Floral structure, pollination mechanism and methods and techniques of seed production in major pulses and oilseed crops; Varietal and hybrid seed production techniques in Pigeon pea, Mustard, Castor and Sunflower. Floral structure, pollination mechanism and methods and techniques of seed production in major commercial fibres. Hybrid-seed production techniques in major vegetatively propagated crops. Seed certification - history, concept, objectives;Central seed certification board Seed certification agency/ organization and staff requirement; Legal status - Phases of seed certification, formulation, revision and publication of seed certification standards; Minimum Seed Certification Standards (MSCS) for different crops - General and specific crop standards, Field and seed standards; Planning and management of seed certification programs; Eligibility of a variety for certification, area assessment, cropping history of the seed field. Practical: Planting design for variety- hybrid seed production techniques, planting ratio of male and female lines, synchronization of parental lines and methods to achieve synchrony; Identification of rogues and pollen shedders, supplementary pollination, detasseling, hand emasculation and pollination; Pollen collection and storage methods, pollen viability and stigma receptivity; Pre-harvest sanitation, maturity symptoms, harvesting techniques; Visits to seed production plots - visit to seed industries; Planning for seed production: cost benefit ratio, seed multiplication ratio and seed replacement rate; General procedure of seed certification, identification of weed and other crop seeds as per specific crops, field inspection at different stages of a crop and observations recorded on contaminants and reporting of results, inspection and sampling, harvesting/ threshing, processing and after processing for seed law enforcement; Specifications for tags and labels to be used for certification purpose.
Frequently Asked Questions (FAQs) on Seed Production and Certification
1. What is seed production?
Seed production is the systematic process of multiplying seeds of improved varieties under appropriate agronomic, genetic and quality-control practices to maintain their identity, purity, viability and germination.
2. Why is quality seed important in agriculture?
Quality seed is a fundamental agricultural input that supports uniform crop establishment, better plant population, genetic purity, improved productivity and efficient use of fertilizers, irrigation and other resources.
3. What are the major components of seed quality?
The four major components of seed quality are genetic purity, physical purity, physiological quality and seed health. These determine varietal identity, cleanliness, germination potential and freedom from harmful seed-borne organisms.
4. What are the different classes of seed in the seed multiplication chain?
The major classes are nucleus seed, breeder seed, foundation seed and certified seed. The usual multiplication sequence is: Nucleus Seed → Breeder Seed → Foundation Seed → Certified Seed → Farmers.
5. What is the difference between seed replacement rate and seed multiplication ratio?
Seed replacement rate (SRR) refers to the percentage of cropped area sown with quality or replaced seed. Seed multiplication ratio (SMR) expresses the quantity of seed produced relative to the quantity sown.
6. What is varietal replacement rate?
Varietal replacement rate (VRR) indicates the extent to which older varieties are replaced by newer or improved varieties in crop cultivation. It helps assess the adoption of improved varieties by farmers.
7. What is genetic purity in seed production?
Genetic purity is the degree to which a seed lot conforms to the genetic identity and characteristic traits of the claimed variety or hybrid. It is maintained through authentic source seed, isolation, rouging and proper handling.
8. What are the major causes of genetic deterioration in crop varieties?
Major causes include natural crossing, mechanical mixtures, mutations, genetic drift, volunteer plants, residual segregation, inadequate isolation and insufficient rouging during seed multiplication.
9. What is rouging, and why is it important?
Rouging is the removal of undesirable plants, such as off-types, diseased plants, volunteer plants, other crop plants and pollen shedders, from a seed production field. It helps maintain genetic purity and seed quality.
10. What is the difference between self-pollinated and cross-pollinated crops?
Self-pollinated crops are mainly fertilized by pollen from the same flower or plant, whereas cross-pollinated crops receive pollen from another plant. Cross-pollinated crops generally require greater attention to isolation and pollination management during seed production.
11. What is hybrid seed production?
Hybrid seed production is the controlled crossing of selected parental lines to produce F1 seed that combines desirable traits. It may involve manual emasculation and pollination, genetic male sterility, cytoplasmic male sterility or other suitable systems.
12. What is the role of male sterility in hybrid seed production?
Male sterility prevents or reduces viable pollen production in the female parent, facilitating cross-pollination by the selected male parent. It can reduce the need for manual emasculation and help improve hybrid seed production efficiency.
13. What is the seed village concept?
The seed village concept is a community-based approach in which farmers in a village or cluster are organized and trained to produce quality seed using suitable source seed, recommended practices, technical guidance and quality-control measures.
14. What is organic seed production?
Organic seed production is the production of seed under applicable organic farming standards, using approved inputs and practices while avoiding prohibited synthetic fertilizers, pesticides and other restricted substances. Organic certification requirements depend on the relevant standard and certification system.
15. What is seed certification?
Seed certification is a systematic quality assurance process through which eligible seed production is supervised and seed lots are evaluated against prescribed standards for varietal identity, genetic purity and other quality parameters.
16. What is the purpose of the Seeds Act, 1966?
The Seeds Act, 1966 provides a statutory framework in India for regulating the quality of notified kinds and varieties of seeds. It supports seed quality regulation through provisions concerning standards, testing and related enforcement mechanisms.
17. What are Minimum Seed Certification Standards (MSCS)?
Minimum Seed Certification Standards are prescribed requirements that seed fields and seed lots must satisfy for certification. They include field standards, such as isolation and off-type limits, and seed standards, such as physical purity, germination and moisture requirements.
18. What is a Grow-Out Test (GOT) in seed certification?
A Grow-Out Test is a method of assessing genetic purity by growing plants from a seed sample and comparing their characteristics with the standard description of the claimed variety or hybrid. It is useful for identifying off-types and varietal mixtures.
19. What are the major stages of seed certification?
The major stages generally include application, source seed verification, field eligibility assessment, area and cropping-history verification, isolation checks, field inspections, rouging, harvesting, processing, sampling, laboratory testing, certification decision, tagging and record keeping. Specific procedures depend on the applicable certification standards.
20. What is the difference between certified seed and truthfully labelled seed?
Certified seed is produced and evaluated under an authorized seed certification programme and must meet the applicable certification standards. Truthfully labelled seed is marketed under the producer's responsibility for the accuracy of label claims and compliance with applicable legal quality requirements. The two systems have different procedures and should not be treated as interchangeable.
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Last Updated: August 2026
