the effect of pollination time and gibberellic acid (ga3) on the production and seed germination of phalaenopsis orchids

The germination power of orchids (orchidaceae family) seems to betoo weak due lack of albumen. the study carried out with various treatmentsincluding pollination time and ga3 for breaking dormancy and increasingseed germination of orchids. the effect of pollination time (8 periods fromjanuary to august) and gibberellic acid (0, 500, 1000 and 1500 mg l-1) werestudied on germination of phalaenopsis orchids. capsules containing seedswith 2, 4, 8 and 10% hypochlorite sodium were disinfected. in order to growseedlings the culture medium of cocopeat and coal with the ratio of 1:5, andcocopeat, coal, industrial shell, and polystyrene with the ratio of 1:1:2:4 wasused. results indicated that the most appropriate concentration of sodiumhypochlorite in order to disinfect the capsules was 2%. the best month forpollination of flowers was january. the highest yield from one capsuleobtained 15.3 seedlings in the medium of 1/2 ms containing 1000 mg l-1 gibberellicacid. the produced seedlings were transferred to greenhouse in orderto hardening. the highest rate of viability was obtained through the mediumof cocopeat, coal, industrial shell, and polystyrene particles.