Seed Technology Study
Subject:- Seed Technology
1.of Seed Multiplication & Their Source Seed
| Stages of Seed Multiplication | Source Seed |
| Nucleus seed | Nucleus seed |
| Breeder seed | Nucleus seed |
| Foundation seed | Breeder Seed |
| Registered seed | Foundation Seed |
| Certified seed | Foundation Seed/Certified seed |
2.Stages of Seed Multiplication, Colour Of Tag and Size of Tag
| Stages of Seed | Tag Colour | Tag Size |
| Nucleus seed | – | – |
| Breeder seed | Golden Yellow | 12 x 6 cm. |
| Foundation seed | White | 15 x 7.5cm. |
| Registered seed | Purple | 15 x 7.5cm. |
| Certified seed | Azure Blue | 15 x 7.5cm. |
3.number of primary samples to be drawn From Seed lot
| Seed Lot In Bulk | Minimum number of primary samples to be drawn. |
| < 50 kg | 3 |
| 50 to 500 kg | 5 |
| 500 to 3000 kg | One for each 300 kg lot but number of samples not <5 |
| 3000 to 20,000kg | 1 sample for each 500 kg but number of samples not <10 |
| 4.Seed lot in bags | |
| Number of Bags | Number of primary samples to drawn |
| Up to 5 containers | 5 |
| 6-30 containers | One for every 3 containers but not <5 |
| 31 and above | One for every 5 containers, but not <10 |
Characteristics of Good Quality Seed
A good quality seed should have the following characteristics:
1. Genetic Purity
The seed must be genetically pure.
| Seed class | Required genetic purity |
|---|---|
| Breeder / Nucleus seed | 100% |
| Foundation seed | 99.5% |
| Certified seed | 99.0% |
2. Physical Purity
The seed should have the required level of physical purity for certification.
| Crop | Required physical purity |
|---|---|
| All crops | 98% |
| Carrot | 95% |
3. High Pure Seed Percentage
The seed should have a high percentage of pure seed.
| Crop | Pure seed percentage |
|---|---|
| Bhendi (Okra) | 99.0% |
| Other crops | 98.0% |
| Sesame, Soybean & Jute | 97.0% |
| Groundnut | 96.0% |
Seed Technology Study Material Table-1
| More Important Tables | Click |
