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تاثیر پنبه تراریخته Bt بر ویژگی های زیستی سن شکارگر (Macrolophus pygmaeus Rambur (Hem.: Miridae | ||
تحقیقات آفات گیاهی | ||
مقاله 8، دوره 6، شماره 2، شهریور 1395، صفحه 75-86 اصل مقاله (579.1 K) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسندگان | ||
سولماز عظیمی* 1؛ شیما رحمانی2؛ احمد عاشوری3 | ||
1دانشگاه شهید مدنی آذربایجان | ||
2دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران | ||
3پردیس کشاورزی و منابع طبیعی، دانشگاه تهران. | ||
چکیده | ||
یکی از مهم ترین پژوه شها پیرامون گیاهان تراریخته مطالعه تاثیر این گیاهان روی بندپایان غیر هدف است. این گیاهان میتوانند اثرات مستقیم (کشندگی) و غیر مستقیم (از طریق گیاهخوار) روی دشمنان طبیعی بگذارند. بنابراین در این پژوهش اثر تغذیه از گیاه پنبه Bt و طعمه (عسلک پنبه Bemisia tabaci Gennadius) پرورش یافته روی پنبه Bt، روی سن شکارگر Macrolophus pygmaeus Rambur مورد بررسی قرار گرفت. چهار رژیم غذایی شامل پنبه Bt+ پوره سن سوم عسلک پنبه (گروه یک)، پنبه شاهد+ پوره سن سوم عسلک پنبه (گروه دو)، پنبه Bt (گروه سه) و پنبه شاهد (گروه چهار) برای آزمایش ها استفاده شد. بر اساس نتایج به دست آمده، پنبه Bt هم به صورت مستقیم و هم از طریق طعمه، اثر معنی داری بر طول دوره نشو و نمای پورگی و میزان تخمریزی داشت. طول دوره پورگی روی رژیم غذایی گروه اول، دوم، سوم و چهارم به ترتیب 32/0±85/19، 24/0±08/16 ، 45/0±42/29 و 23/0±11/23 روز به دست آمد. همچنین، میزان کل تخم های گذاشته شده در تیمار پنبه شاهد+ پوره عسلک پنبه به طور معنی داری بیشتر از سایر گروه ها بود، گرچه بین تیمار پنبه Bt و پنبه شاهد در تعداد تخم گذاشته شده تفاوت معنی داری مشاهده نشد. نتایج نشان داد که پنبه تراریخته این قابلیت را دارد که به طور مستقیم یا از طریق تاثیر بر شکار، باعث کاهش شایستگی سن شکارگر شود و در نتیجه در استفاده از گیاهان تراریخته به عنوان یکی از عوامل مدیریت تلفیقی آفات نیاز به دقت بیشتر و ارزیابیهای دقیق تر خواهد بود. | ||
کلیدواژهها | ||
گیاه تراریخته؛ Cry؛ Macrolophus pygmaeus؛ عسلک پنبه | ||
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