عنوان	Correlation between direct and indirect defenses of common bean (Phaseolus vulgaris) againsttwo-spotted spider mite (Tetranychus urticae)
نوع پژوهش	مقاله ارائه شده کنفرانسی
کلیدواژه‌ها	Damage scale, Olfactory test, Pearson, Predatory mite, Yield
چکیده	In order to determine the correlation between the amount of damage caused by two-spotted spider mite (Tetranychus urticae) (direct defense) and the amount of predatory mite (Phytoseiulus persimilis) attraction in common bean (Phaseolus vulgaris) (indirect defense), 4 varieties of common bean were grown in the Ilam University field in the form of a randomized complete block design in three replications. In the flowering time, the plants were infected with T.urticae, so the damage rate of T.urticae was evaluated with a damage scale (1-4). In addition, at the end of the growing season, the grain yield of the varieties was noted. The data of the olfactory test is related to a previous research work, and here only the relationship between two categories of data (the damage of T.urticae and the rate of P.persimilis attraction) was calculated with the Pearson correlation coefficient. The results showed that a positive and significant relationship was observed between damage and predator attraction (r=0.661). The highest amount of T.urticae damage and P.persimilis attracting was related to Naz variety. The highest yield in the T.urticae infested conditions was related to Ks41128 variety. The information obtained from this experiment can be used in the future programs of using predatory mite to control the T.urticae in common bean cultivars.
پژوهشگران	فاطمه کمری (نفر اول)، زهرا طهماسبی (نفر دوم)