Evaluation of Emergence Characteristics and Storage Root Production of Ferula gummosa Boiss. Under Its Habitats and Pot Conditions

To assessing the influences of planting dates and depths on storage roots production of endangered medicoindustrial Ferula gummosa Boiss. some experiments were carried out at natural fields and pot as well. The pot experiments had done as factorial in completely randomized design with ten replications. Treatments contained five levels(2 October, 11 November, 22 December, 30 January, 11 March)of planting date and 2 levels (2 and 4 cm) of planting depth. Results showed that the effect of planting date on emergence percentage, emergence rate, number of storage roots, length of storage root, storage root’s dry weight, leaf dry weight and total dry weight were highly significant and depth planting effect on emergence percentage, length of root storage, storage root dry weight, leaf dry weight and total dry weight were significant. The interaction of planting depths and dates had significant effect on root length, root dry weight and total dry weight of storage roots. Based on the results, planting depth of seeds at late autumn, provides the optimum conditions for removal of seed dormancy and increase emergence percentage and emergence rate, so planting at this time have priority on spring planting. The results of field experiments showed a very significant effect of aspects on emergence percentage of Ferula gummosa Boiss. The highest emergence rate observed at northern faced aspect, then western and southern faced aspects and eastern faced slop had lowest emergence rate.