Abstract:

To investigate the effect of different levels of drought stress, zinc and salicylic acid spray on yield and essential oil components of fennel, an experiment was conducted in two years 2018 and 2019 as split-plot factorial based on randomized complete block design with three replications at the research farm of Ivan city in Ilam province. The main factor consisted of irrigation regimes at three levels of non-stress, moderate stress and severe dehydration through irrigation levels of 50, 75 and 100 mm evaporation from Class A evaporation pan, respectively. The sub-factor consisted of nano fertilizer at two levels (without fertilizer and zinc nano-fertilizer spray) with salicylic acid spray at four levels (zero, two, four and six mmol). Drought stress decreased grain yield and essential oil yield. Fennel essential oil percentage increased with intensifying the drought stress. The concentration of 6 mM salicylic acid resulted in the highest essential oil percentage (2.8 %) and essential oil yield (29.2 kg/ha). Application of Zn nano-fertilizer at drought stress levels of 50, 75 and 100 mm increased the grain yield by 14 %, 2.5 % and 6.5 %, respectively. Most of the fennel essential oils consisted of Anethole, Fenicon, Estrogel and Limonene. The application of zinc nano-fertilizer increased the concentration of anethole and esrogel but decreased the concentration of fenecon and limonene. The application of salicylic acid also increased the amount of anethole and estrogel.

摘要：

为了研究不同水平的干旱胁迫，锌和水杨酸喷雾对茴香的产量和精油成分的影响，于2018年和2019年进行了一项实验，作为分块分解因子，基于随机完全区组设计，并在3次重复伊兰省伊万市的研究农场。主要因素包括通过分别从A类蒸发盘上蒸发50、75和100 mm的灌溉水平，在三种非压力，中等压力和严重脱水水平下的灌溉制度。子因素包括两个级别的纳米肥料（无肥料和锌纳米肥料喷雾）和四个级别（零，两个，四个和六个毫摩尔）的水杨酸喷雾。干旱胁迫降低了谷物产量和精油产量。茴香精油百分比随着干旱胁迫的加剧而增加。6 mM水杨酸的浓度导致最高的精油百分比（2.8％）和最高的精油产量（29.2 kg / ha）。在50、75和100 mm的干旱胁迫水平下施用锌纳米肥料可使谷粒产量分别提高14％，2.5％和6.5％。大部分茴香精油由茴香脑，芬尼康，雌二醇和柠檬烯组成。锌纳米肥的使用增加了茴香脑和雌激素的浓度，但降低了芬内康和li烯的浓度。水杨酸的应用也增加了茴香脑和雌激素的含量。在50、75和100 mm的干旱胁迫水平下施用锌纳米肥料可使谷粒产量分别提高14％，2.5％和6.5％。大部分茴香精油由茴香脑，芬尼康，雌二醇和柠檬烯组成。锌纳米肥的使用增加了茴香脑和雌激素的浓度，但降低了芬内康和li烯的浓度。水杨酸的应用也增加了茴香脑和雌激素的含量。Zn纳米肥料在50、75和100 mm的干旱胁迫水平下的产量分别提高了14％，2.5％和6.5％。大部分茴香精油由茴香脑，芬尼康，雌二醇和柠檬烯组成。锌纳米肥的使用增加了茴香脑和雌激素的浓度，但降低了芬内康和li烯的浓度。水杨酸的应用也增加了茴香脑和雌激素的含量。