How To Determine Tomato Seed Quality
The quality of tomato seeds depends mainly on seed plumpness, germination rate, germination potential and seed purity.
(1) Fullness is the fullness of the seed. It is generally expressed in thousand grains, which is the mass (grams) of 1000 seeds. The larger the grain weight, the more full the seeds are. The average tomato seed weight is about 3.1 grams.
(2) Germination rate refers to the percentage of germinable seeds in the sample seed. The germination rate of tomato seeds requires more than 90%.
(3) Germination potential refers to the percentage of germinating seeds that account for the test seeds within the specified number of days. It is a quantitative indicator of seed germination rate, uniformity and concentration of germination. The tomato seed germination potential was measured for 5 days.
(4) Seed purity refers to the percentage of the number of plants that meet the characteristics of this variety to the total number of plants identified. The purity of tomato seeds requires more than 95%. Hybrids are divided into primary and secondary species. The purity of the primary seed is not lower than 98.0%, and the secondary seed purity is not lower than 95.0%.
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