Classes of seeds

Student at College of Agriculture, Parbhani
24. Feb 2021

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Classes of seeds

  3. Different Classes of Seeds  Nucleus seed  Breeders Seed  Foundation Seed  Registered Seed  Certified seed
  4. • The process of development of certified seeds begins from its distant parent called Nucleus Seed. • A group of progenies of individual plants taken at random from a variety for the purpose of purifying that variety of mixtures and off-types. • 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. Nucleus seed
  5. • All physical observations such as plant size, growth features, colour and shape of various parts, days taken in maturity etc. • This stage is the most important phase in the seed development because any erroneous selection of the nuclear seed plants would adversely affect the further generations. • Once these plants are obtained and threshed separately. If it is an oilseed are selected; their seeds crop; the quality of seeds, yield etc. is observed and recorded and those with undesired yield are removed.
  6. • These seeds are properly packed and regrown to get the breeder seeds. • The initial handful of seed obtained from selected individual plants of a particular variety for the purposes of purifying of maintaining that variety, by the originating plant breeder and its further multiplication under his own supervision, or the superviston of a qualified plant breeder to provide Breeder's seed constitutes the basis for all further seed production.
  7. • It is the seed or vegetative propagating material produced from nucleus seed, should be used for increasing breeder seed, which is directly controlled by the originating breeder or in satisfactory genetic purity, identity and the other good qualities. • It is the source for the production of seed of the certified classes. • It provides for the initial and recurring increase of foundation seed. BREEDER'S SEED
  8. • A breeder's seed is an offspring of nucleus seed. • A breeder is person (qualified plant breeder) or а organization who raises plant primary for breeding purpose. • While nucleus seed is genetically pure; the Breeder seeds are produced by mutual multiplication of three different lines which are denoted by A line, B line and R line. A line is female, while B and R line are male sterile. • The seeds from off springs with best and desired quality are selected and certified as Breeder seeds. Such seeds are protected by legal rights called as Breeder's rights.
  9. • The Breeder seed is further multiplied into the foundation and certified seeds. In our country, Breeder seeds are produced Indian Council of Agricultural Research, National Seeds Corporation, States Farms Corporation and agricultural universities in India
  10. • Offspring's of the Breeder seed which can be clearly traced to Breeder seed are called Foundation Seeds They are further breaded to give rise to certified seeds. • The production of the foundation seeds must be acceptable to a certification agency. • A person or company who grows and distributes the certified seeds in accordance with the procedure and specifications of the certification agency is called Certified Seed Producer. FOUNDATION SEEDS
  11. • The national Seeds Corporation, State farms Corporation of India (SFCI) have the responsibility to produce foundation seeds which suit to demand of national varieties. The State Seed Corporations produce the foundation seeds to suit to local demands. • Foundation seed so handled to maintain specific genetic purity and identity. • The production must be acceptable to a certifying agency.
  12. • This seed is multiplied as foundation seed usually at Government Seed Farms, Farms of the Agricultural Universities, at the farms of the National Seed Corporation or a cultivators field under strict supervision of research scientist of the different universities and seed certification agency. • Foundation seed is the source of all certified seed classes.
  13. • lt is the progeny of foundation or registered see produced at the farms of progressive farmers as per technically an supervision provided by National Seed Corporation/ State See Corporation (Maharashtra State Seed Corporation, Akola); handled under producer acceptable to the certifying agency to maintain satisfactory genetic purity and identity, and other good qualities. REGISTERED SEED
  14. CERTIFIED SEEDS • This is the last stage, which actually reaches to a farmer. • Certified seed is the progeny of foundation seed and must meet the standards of seed certification prescribed in the Indian Minimum Seed Certification Standards, 1988