seed and its classes

seed and classes of seed categories of seed

1. Welcome

2. Seed Classes of seed

3. What is Seed- Botanically seed is a fertilized ovule consisting of intact embryo, stored food and seed coat which is viable and has got the capacity to germinate. A  seed  is an embryonic plant enclosed in a protective outer covering. A  seed  is the part of a  seed  plant which can grow into a new plant.

4. Classes of seed-

5. Nucleus seed- The nucleus seed is a genetically pure seed without any impurity. They are obtained from a handful of healthy plants growing in a plot and then grown strictly in isolation . It is produced directly by the originating plant breeder at research institute. It has highest genetic purity aprox 100 percent.

6. Breeder seed- It is progeny of nucleus seed. It is produced under strict supervision of plant breeder at research institute. Breeder seed is used for produce foundation seed. Genetic and physical purity is almost same to nucleus seed. It has golden yellow colored tag.

7. Foundation seed- It is progeny of breeder seed. Known as mother seed and it is the source of registered and certified seed. It is genetically 99.9 percent pure however physical purity of 98 percent. It is mainly produced by national seed corporation (NSC). It is produced on government farms, at experiment stations, agriculture universities or on cultivar’s field under strict supervision of research scientists and export from state seed certification agencies (SSCA) White tag is used for foundation seed.

8. Registered seed- It is produced from foundation seed and registered seed itself. It has satisfactory genetic purity and identity. In I ndia it is generally avoided and certified seed is directly produced by the foundation seed. It has purple or orange colored tag on bags.

9. Certified seed- It is progeny of either registered seed or foundation seed or certified seed itself. It has satisfactory genetic identity and purity. It is approved and certified by the state seed certification agency. It is available for general distribution to the farmers for commercial crop production. It has azora blue colored tag on bag.

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