Seed certification

Generation system of seed multiplication

Generation system of seed multiplication is nothing but the production of a particular class of seed from specific class of seed up to certified seed stage. The choice of a proper seed multiplication model is the key to further success of a seed programme which basically depends upon,

a. The rate of genetic deterioration b. Seed multiplication ratio and c. Total seed demand

Based on these factors different seed multiplication models may be derived for each crop and the seed multiplication agency should decide how quickly the farmers can be supplied with the seed of newly released varieties, after the nucleus seed stock has been handed over to the concerned agency, so that it may replace the old varieties. In view of the basic factors, the chain of seed multiplication models could be,

a. Three - Generation model

Breeder seed - Foundation seed - Certified seed

b. Four - Generation model

Breeder seed - Foundation seed (I) Foundation seed (II) - Certified seed

c. Five - Generation model

Breeder seed - Foundation seed (I)- Foundation seed (II) -Certified seed (I) -  Certified  seed (II)

Truthfully labeled seeds

The opal green color of a correctly labeled seed tag. Seeds are frequently unable to meet seed certification standards in government sectors for any one parameter. In the government sector, the price of truthfully labeled seed is always cheaper than the price of certified seed. The seed that has been rejected owing to genetic impurity or the existence of a disease that is unacceptable is not labeled as truthful.

Certified seed

Azure blue marking to identify certified seed classes. The certified seed tag is 15*7.5 cm in size.

Certified seed is the offspring of foundation seed.

To achieve a successful crop, stand with certified seeds, a high percentage of germination is required.

It’s usually okay as long as the reproduction doesn’t go beyond three generations, excluding the breeder seed.

Foundation seed

White color tag. The foundation seed label is 15X7.5 cm in size.

The progeny of the breeder seed is the foundation seed.

The foundation seed has a genetic purity of 99.5 percent. This foundation seed, often known as mother seed, is the source of all other certified seed classes, either directly or through registered seed-producing firms.

Breeder seed

A golden yellow marking for this category. The breeder seed tag is 12X6 cm in size. For each bag of seeds, a single tag is usually supplied. Label number, crop, variety, seed class, lot number, date of the test, pure seed percent, inert matter percent, germination percent, and producing institution are all included on the label.

Breeder seed is the offspring of a nucleus seed that is typically replicated over a greater area of the field.

The breeder stage seed is the initial seed in the multiplication generation system. The breeder seed is the source of the first seed, as well as the subsequent rise in foundation seed production.

Sources: https://krishijagran.com/agripedia/different-types-of-seeds-explained/ ↗

https://agritech.tnau.ac.in/seed/seedmultiplication.html ↗