 |
Classification of seeds with example
Seed may be classified into various ways. The classification of seed are given below-
1. According to the number of cotyledon:
a. Monocotyledonous seed: These seeds contain only one cotyledon as in cereal grasses and other plants belonging to farm. E.g. seed of rice, wheat, maize, palm, orchid etc.
b. Dicotyledonous seed: These seeds contain two cotyledons. E.g. pulse, mango, potato etc.
c. Polycotyledonous seed: Seeds contain more than two cotyledon. E.g. pine, polyalthia etc.
2. According to the storage of food materials:
a. Exalbuminous or non-endospermic: When the food is stored up outside the cotyledon or cotyledon as in the pea, the gram and other plants of farm.
b. Albuminous or endospermic: When the food is stored up outside the cotyledon in a separate tissue known as the endosperm as in the wheat, apple.
3. According to the mode of germination:
a. Hypogeal germination seed: The cotyledon or cotyledons remain inside the seed coat and never appear above the soil. E.g. Pea, paddy, maize, gram etc.
b. Epigeal germination seed: The cotyledon or cotyledons remain inside the seed coat but appear above the soil. E.g. Bean gourd, castor oil seed etc.
4. According to the number of embryo:
a. Mono-embryonic seed: Seed contain only one embryo. E.g. Rice, wheat, jute etc.
b. Poly-embryonic seed: Seed contain more than one embryo. E.g. Mango and all citraceae.
a. Mono-embryonic seed: Seed contain only one embryo. E.g. Rice, wheat, jute etc.
b. Poly-embryonic seed: Seed contain more than one embryo. E.g. Mango and all citraceae.
5. On the basis of structure:
a. Weight protected seed: E.g. Tomato and some grass seed.
b. Structure protected seed: E.g. Rice.
c. Loose field seed: E.g. cotton, sunflower seeds etc.
d. Naked fruit seed: E.g. Rice, wheat, maize etc.
e. Naked seed: E.g. Sorghum, soyabean, cow-pea, nuts etc.
a. Weight protected seed: E.g. Tomato and some grass seed.
b. Structure protected seed: E.g. Rice.
c. Loose field seed: E.g. cotton, sunflower seeds etc.
d. Naked fruit seed: E.g. Rice, wheat, maize etc.
e. Naked seed: E.g. Sorghum, soyabean, cow-pea, nuts etc.
6. On the basis of use:
a. Agricultural seeds: e.g- sugarcane sett, potato tuber etc.
b. Botanical seeds: e.g- rice, wheat, maize etc.
a. Agricultural seeds: e.g- sugarcane sett, potato tuber etc.
b. Botanical seeds: e.g- rice, wheat, maize etc.
