investigation on the hormone effects on in vitro culture of iris pseudacorus

three experiments were conducted in tissue culture and biotechnology laboratory of horticulture department of mohaghegh ardabili university in 2012. for the regeneration of plant from seed, different concentrations of naoh (5, 10, 15, 20 m) and various scarification methods with sandpaper (soft scarification, medium scarification and hard scarification) were used based on completely randomized design with 4 replications. the results of experiment revealed that seeds treated by 20 m naoh and hard scarification produced the highest germination rate. after 2 months of seed germination, hypocotyles of seeds were used as explants and cultured in ms medium containing different concentration of 2,4-d, picloram, tdz and ba (1, 2, 4 mg/l) based on completely randomized design with 4 replications. mean comparison revealed that explants treated by 4 mg/l picloram and 1 mg/l 2,4-d produced the highest callus content. mean comparison showed that explant treated by 1 mg/l ba produced the highest shoots. however, to investigate the soluble protein changes during growth stages and to study the effects of 2,4-d, picloram, tdz and ba on soluble protein and experiment was conducted. the result showed that by increasing the plant age, soluble protein was reduced and also the highest soluble protein was found after 4 weeks of germination. the result also showed that explants treated by 4 mg/l picloram and 1 mg/l ba produced the highest soluble protein content.