Principles of Seed Technology

GPBR 112 is a seed technology course that explains seed quality, classes of seed, genetic purity, certification, testing, treatment, storage, processing, and seed marketing.

The main seed classes generally move from breeder seed to foundation seed and then to certified seed, with each stage helping maintain varietal identity and seed quality during multiplication.

Genetic purity is important because seed must remain true to type so farmers get the intended varietal characters, performance, and reliability expected from that crop variety.

Seed certification is the formal quality-assurance process used to maintain and verify varietal identity, genetic purity, and prescribed seed standards during production and marketing.

Seed quality assessment commonly includes tests for physical purity, germination, viability, vigour, moisture content, seed health, and sometimes grow-out or biochemical methods for genetic purity.

Seed storage is important because temperature, moisture, pests, diseases, and handling affect longevity, vigour, and germination, so proper storage helps maintain seed quality until sowing or sale.

Seed treatment means applying protective or beneficial substances to seed before sowing or storage so it is better protected against diseases, pests, and early establishment problems.

They study seed marketing and seed laws because seed is both a biological input and a regulated product, so students need to understand supply, certification, quality enforcement, and how seed reaches farmers.