Plant defense against herbivory

the machenisms behind these stress responses. We studied both drought and herbivore and their combined effect on Boechera stricta. We had used two populations i.e. Black Hills (lower elevation) and Big Horns (high elevation) and two genotypes from each population. After a certain growth with similar conditions to all the plants, we started our treatment on 23rd dad and start stressing half of plants with drought and kept half as control. We watered drought stressed plants only once a week and twice a week to control treatment plants. After 4 weeks of continuous treatment, we exposed half of the plants from both drought and control to a general herbivore Spodoptera exigua and kept half again for control of herbivore. We exposed each plant with 3-4 larvae and allow them to feed for 3 days. After we checked feeding damage on leaves of each plant. We harvested our plants and extract defense compound Glucosinolates from each plant. According to Schranz et al. (2009), concentrations of defense compounds due to drought stress condition. According to our results, when only herbivore is present on plant in absence of drought conditions, ratio of concentration of defense chemicals is increasing. In contrast, when there are both herbivores as well as…