Classes of improved seed

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A) Nucleus seed:

  • It is the initial seed of an improved variety which is always limited in

    quantity

  •  It is produced by the originating plant breeder

  • Purity – It is genetically and physically cent percent pure

  •  Certification – exempted from certification by seed certifying agency but

    should be certified by the breeder

  •  Use – for breeder seed production. It is not meant for general distribution

B) Breeder seed:

  • It is the progeny of nucleus seed or breeder seed

  • It is produced under strict supervision of original or sponsoring plant

    breeder at the research farm of the concerned crop research institute or

    agricultural university

  •  Production – produced in isolation from other varieties.

  •  Purity – genetically and physically cent percent pure

  •  Certification – No certification

  •  Use- For foundation seed production. Not meant for distribution

  •  Tagging – Gold coloured tag signed by the breeder.

C) Foundation seed:

  • It is the progeny by breeder seed

  •  Production – produced by National Seeds Corporation under the strict

     supervision of research scientists and experts from NSC at Govt. Seed

     multiplication farms. It is produced in isolation

  • Purity –genetically 100% pure. Physical purity – 98%

  • Certification – undertaken by seed certification agency

  • Use – For production of registered seed or certified seed production. Not

    for general distribution

  • Tagging – White Tag signed by the certifying agency

D) Registered seed:

  • Progeny of either foundation seed or registered seed

  • In India, registered seed is generally omitted and certified seed is produced

    directly from the foundation seed

  • Production – By progressive cultivators at the farms under strict

    supervision of NSC.

  • Purity – genetic purity-100%, Physical purity- 98%

  • Certification – It is done by the SSCA

  • Use – For production of certified or registered seed

  • Tagging – Purple colour

E) Certified seed:

  • Progeny of either foundation or registered or certified seed

  • Production – produced on the fields of progressive farmers under the

    strict supervision of SSCA

  • Purity – genetic purity-100%, Physical purity- 98%

  • Certification – Done By SSCA

  • Use – available for general distribution to the farmers for commercial production

  • Tagging – Blue colour Tag.


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