The effect of environmental conditions at different developmental ages on the vegetative growth phase was investigated in sweet Ferula assa-foetida in order to identify the defensive mechanisms and essential oil production. Younger plants had more potential for producing the essential oil. Sulfur and sesquiterpenoid compounds were detected as the main groups of components. Monoterpene production was limited to camphene that particularly appeared in older plants. Thiourea as the main sulfur-containing component in fresh tissues helped plants to tolerate abiotic stresses due to scavenging activity of reactive oxygen species (ROS). Three isoforms of SOD and one isoform of catalase were identified in the plants subjected to environmental stresses. The significant enhancement in protein level and reduction in H₂O₂ level during the period of growth with strong induction in antioxidant enzymes’ activities in older plants indicated that they have more functional defensive mechanisms in comparing to younger plants.

为了确定防御机制和精油生产，研究了甜Fer菜（Ferula assa-foetida）中不同发育年龄的环境条件对营养生长期的影响。年轻的植物在生产香精油方面具有更大的潜力。硫和倍半萜类化合物被检测为主要组分。单萜的生产仅限于camp烯，尤其是在较老的植物中。硫脲作为新鲜组织中的主要含硫成分，由于活性氧（ROS）的清除活性，可帮助植物耐受非生物胁迫。在遭受环境胁迫的植物中鉴定出三种SOD亚型和一种过氧化氢酶亚型。蛋白质水平显着提高，H降低在生长期间，₂ O _2的水平对衰老植物的抗氧化酶活性有强烈的诱导作用，这表明与年轻植物相比，它们具有更多的功能防御机制。