In order to compare of different methods for tomato seed extraction, factorial experiments with 4 replications were conducted. Pulp of two tomato cultivars (Faraon, Dominator) were extracted by HCL (pH was arranged to 1, 2, 3 by adding required acid to the slurry and shaked for 10, 20, 30 minutes), H2SO4 (pH was arranged to 1, 2, for 15, 30 minutes), Sodium carbonate (5%, 10% for 24 and 48h) and fermentation. Germination percentage, germination rate, length of radicle and length of plumule were used for seed quality assessment. The results showed that interaction effect between pH and duration of HCL treatments was significant for germination of seeds (percentage and rate), but sulphuric acid treatments didn’t show significant difference on measured traits. There was an interaction effect between concentration and duration for germination rate in alkali treatments. Different extraction methods had significant effect on germination rate (but not on germination percentage), so that natural fermentation and alkali gave lower germination rate than acid treatments. Also, acid treatments produce very bright clean seed in compare to other treatments. The best results were generally obtained with Faraon cultivar.

Keywords