نوع مقاله : مقاله پژوهشی
نویسندگان
گروه گیاهپزشکی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The predatory mite Amblyseius swirskii is one of the most important biological control agents. The pollen grains of various Rosaceae plants have been effective in improving the development and reproduction of general phytoseiid predatory mites. This study investigated the effects of feeding from pollen grains of five ornamental roses (China rose, Damask rose, Avalanche rose, Iceberg rose and Samurai rose) on the mite life parameters. The experiments were conducted at 25 ± 2◦C, relative humidity of 60 ± 10%, and a photoperiod of 16 hours. In control, mites were fed with the eggs and immature stages of Tetranychus urticae. The results showed that the intrinsic rate of increase (r) in the predators fed with China rose pollen (0.206 day-1), followed by Damask rose pollen (0.199 day-1), was higher than the rest and followed by Avalanche, Samurai, Iceberg pollen, and control with the values of 0.171, 0.166, 0.164, and 0.156 day-1, respectively. The pre-adult mortality in China rose pollen treatment was 10.4%, but the mites in this treatment developed faster (6.26 days) and started laying eggs in a shorter time (7.46 days). Also, the oviposition time and the number of eggs laid in the mites fed with Damask rose pollen (29.25 days, 59.38 eggs/female, respectively) followed by China rose pollen (24.35 days, 42.65 eggs/female, respectively) were more than others. Therefore, all rose pollen grains were suitable food for the development and reproduction of A. swirskii mites. However, pollens of China and Damask roses showed better performance in population growth of this predatory mite.
کلیدواژهها [English]