Seed – Seed Definition and Classification

Seed is the main and most important elements of agriculture. In the Seed – Seed Definition and Classification post, you will get Seed Definition and Classification very clearly. High production of crops also depends on seed quality. Farmers can increase their production by using of good quality seed. The seed definition and classification are as following:

Seed - Seed Definition and Classification

Seed Definition:

The seed may be defined in a number of ways. That’s are-

Normally:

Any part of the plant used for crop cultivation may be defined as seed in agriculture.

E.g. Grains of paddy or wheat, potato, ginger, garlic, sucker of banana, Stem of sweet potato etc.

Botanically:

A seed  may be define as a mature ovule consisting of an embryonic plant (dormant) together with a store of food, all surrounded by a protective coat.

E.g. Paddy, Wheat, Maize, Tomato, Brinjal, Cucumber, Papaya etc.

Classification of Seed:

There have different classifications of seed by different basis. The classifications of seed are as following:

On the Basis of Agriculture:

Agriculture seed may be divided into two groups, such as-

  1. True seed:

The seed originates from flower is called true seed. I.e. fertilize and mature ovule is called true seed.

  1. Vegetative seed:

The stem, roots or leaves or there modification e.g. stolen, rhizomes, tubers, bulbils, bulbs or corns etc may be used for crop production such as potato tubers, rhizome of ginger, bulb of onion, sucker of banana.

Seed - Seed Definition and Classification

On the Basis of presence of cotyledons:

On the basis of presence of cotyledon, seed is grouped into two classes. That’s are-

  1. Dicotyledonous:

In dicotyledonous seed, the embryo bears two cotyledons e.g. Gram, pea, mango, gourd, turmeric, cotton and sunflower etc.

  1. Monocotyledonous:

In monocotyledonous seed, the embryo bears only cotyledon, as in paddy, wheat, onion, palm etc.

On the basis of botanically:

On the basis of botanically plants produce two types of seed

  1. Naked seed:

No flower/fruit is required in the production of this type of seed. This type of seed is produced under the cone of conifer plants. E.g. Pine, Cedar, Fir, Red Wood, Cypress etc.

  1. Covered seed:

Fertilizes and mature ovule is called covered seed.

On the basis of types of germination:

On the basis of types of germination seed may be divided into-

Hypogeal:

In hypogeal germination, the cotyledons remain below the soil and the plumule is carried above the cotyledon or scutellum.

Epigeal:

In epigeal germination cotyledons are above ground by elongation of the hypocotyls, i.e. the stem below the cotyledons.

Different kinds of the vegetative seeds:

Vegetative seeds divided into nine types. That’s are-

  1. Rhizome
  2. Tuber
  3. Bulb
  4. Corm
  5. Sucker
  6. Stolons
  7. Bulbils
  8. Tuberous roots
  9. Graft and gooties

Conclusion:

So, Any parts of plant which can produce a new plant that may be called seed. Seed is the main part of crop production.

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