ferula assa - f؟tidal بررسي روش هاي مختلف تيغ زني برعملكرد و بقاي گياه دارويي آنغوزه

Effects of Different Methods of Root Incision on the Yield and Survival of Asafoetida( Ferula assn foetida L.)

Asafoetida (Ferula assa foetida L.) is an important medicinal plant belonging to the Apiaceae family. It is a herbaceous, perennial and monocarpic plant. Flowers appear only once during the life cycle of the plant. The root contains accumulated resin. The resin that can be secreted by incising the root is of medicinal properties. It is used as a vermicide, as well as in treatment of insomnia. This study was carried out in the asafoetida (Ferula assa foetida L.) rangelands in Khomrout located in Zarand in Kerman province. The main aim of the study was to find out the most suitable method of incision which not only yields the largest amount of resin but also does not damage plant life. To achieve these aims, five incision methods consisting of widthwise (control), one-sided, two-sided, lengthwise as well as composite (mix of one-sided and lengthwise methods) were employed. The statistical design was a complete randomized one with five replications. The results show that incision methods have a significant effect on the resin content as well as the survival of Asafoetid. The average yield of resin in widthwise, two-sided, one-sided, lengthwise and composite method was 62.94, 59.64, 39.08, 19.66 and 42.38 g per plant respectively. Percentage of survived plants was 12, 86, 94,76 and 96 percent respectively. There was no significant difference observed between resins in two-sided (59.64 g per plant) and widthwise (62.94 g per plant) incision methods but a significant effect was observed on the percentage of survived plants. The highest survived plant (86%) and the lowest one (12%) appeared in the plots incised through two-sided and widthwise methods respectively. Therefore, according to the obtained results two-sided incision method for asafoetida is suitable and recommended.