Seed may be defined as a fertilie ovule consisting of intact embryo, stored food and seed coat, which is viable and has got the capacity of germinate. The term seed is also used for any propagating material, often called as seedlings, tubers, bulbs, rhizomes, roots, cuttings, all types of grafts and other vegetative parts, tissue culture-generated material etc. Thus seed means any type of living embryo or propagule used for sowing or planting that is able to regenerate and give rise to an agricultural plant that is true to its type.
SEED REPLACEMENT RATE :-
Seed is the most vital and critical input in agriculture on which the efficacy of other agricultural inputs depends. Seed acts as a catalyst in agricultural production. The seed sector has made impressive progress over the last three decades. There has been a steady increase in the breeder seed and quality seed produced over years. SRR of Wheat was 35% is increased to 39% due to this the area under Wheat is increased 2.61% and production is increased by 13.40% and Wheat productivity increased in all the districts ranges from 2.24% to 17.90%. The availability of quality seeds in India is around1.24 million tonnes/year. Total area sown, Seed Distributed and Seed Replacement Rate for last three yearsin Punjab is as under :-
||Total Area Sown '000' ha
||Seed Distribution (qtl)
||Seed Replacement Rate