تأثیر دگرآسیبی غلظت‌های مختلف عصاره آبی اندام‌های متفاوت پونه (.Puleguim vulgar L) و رازیانه (.Foeniculum vulgar L ) بر جوانه‌زنی و رشد ذرت (.Zea mayze L) و نخود (.icer arietinum L)

Studies show that some of the medicinal plants have allelopathic effects. Therefore, one of the tools for reducing application of herbicides is using the allelopathic properties of these plants. These plants, if put in the agronomic rotation, are very important. The present research was conducted to determine the effects of different concentrations of aqueous extract of leaf, stem, flower and root of beebalm and fennel on germination and growth of maize (cv. Single Cross 704) and chickpea (cv. Seffid). The experiment was performed as factorial in a completely randomized design with 4 replications. First, stock solution of 6% w/v aquous extract was prepared, and then diluted solutions (0, 25, 50, 75 and 100%) were obtained. The results indicated that there were allelopathic effects in beebalm and fennel plants. Effect of aqueous extract of different plant parts on germination traits of maize and chickpea was not similar. Concentration of aqueous extracts was effective on germination traits such as percentage and rate of germination, length of radical and hypocotyls and time to end of germination. Higher levels of this concentration inhibited more of these studied traits. The degree of allelopathic effects of different parts of bee‌balm and fennel can be classified in order of decreasing inhibition as: stem, leaf, flower and root between the two medicinal plants, fennel indicated more allelopathic effects on germination traits.