بررسی مقایسه‌ای روش‌های نمونه‌برداری از شته مومی کلم، Brevicoryne brassicae (Hem.: Aphididae) بر روی گیاه کلزا، Brassica napus در منطقه اهواز

نوع مقاله : مقاله کامل، فارسی

نویسندگان

1 بخش تحقیقات گیاه‌پزشکی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان خوزستان، سازمان تحقیقات، آموزش و ترویج، اهواز، ایران

2 گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران

10.52547/jesi.42.4.4

چکیده

شته مومی کلم (Brevicoryne brassicae L.)، یکی از آفات کلیدی و اقتصادی گیاهان خانواده چلیپائیان در جهان می‌باشد که اثرات مخربی بر روی کلزا (Brassica napus L.)، به همراه داشته است. در این تحقیق، به منظور تخمین دقیق از جمعیت شته مومی کلم، سه روش نمونه‌برداری (عکس‌برداری، اندازه‌گیری میانگین طول ساقه آلوده و میانگین وزنی شته)‌ به عنوان تیمارهای اصلی با روش شمارش مستقیم به عنوان تیمار شاهد در سه مرحله غنچه‌دهی، گل‌دهی و غلاف‌دهی کلزا به طور جداگانه، مورد مقایسه قرار گرفتند. برای هر مرحله رشدی، 22 بوته کلزا و از هر بوته، سرشاخه انتهایی که دور آن‌ توسط کلنی شته‌‌ها به طور کامل پوشانده شده بود، به عنوان واحد نمونه‌برداری انتخاب گردید. نتایج نشان داد که روش‌های اندازه‌گیری میانگین طول ساقه آلوده و میانگین وزنی شته‌ در هر سه مرحله غنچه‌دهی، گل‌دهی و غلاف‌دهی با روش شمارش مستقیم، اختلاف معنی‌داری داشتند. ولی هیچگونه اختلاف معنی‌داری بین روش عکس‌برداری با روش شمارش مستقیم در طول مرحله غنچه‌دهی، مشاهده نشد. بر این اساس، روش عکس‌برداری با داشتن بالاترین میانگین ضریب تصحیح (790/0)، ضریب تبیین (9315/0) و دقت خالص نسبی (RNP) 56/51، به عنوان بهترین و دقیق‌ترین روش جهت تخمین دقیق جمعیت شته مومی‌کلم در مرحله غنچه‌دهی، معرفی شد. بر اساس یافته‌های این پژوهش، انتخاب یک روش صحیح نمونه‌برداری در زمان مناسب، می‌تواند برنامه‌های مدیریت تلفیقی شته مومی کلم را ارتقاء بخشد.

چکیده تصویری

بررسی مقایسه‌ای روش‌های نمونه‌برداری از شته مومی کلم، Brevicoryne brassicae (Hem.: Aphididae) بر روی گیاه کلزا، Brassica napus در منطقه اهواز

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Comparative study of sampling methods of the cabbage aphid, Brevicoryne brassicae (Hem.: Aphididae) on rapeseed plant, Brassica napus in Ahvaz region

نویسندگان [English]

  • Afrooz Farsi 1
  • Ebrahim Soleymannejadian 2
1 Plant Protection Research Department, Khuzestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran.
2 Department of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
چکیده [English]

The cabbage aphid, Brevicoryne brassicae L., is one of the major and economic pests of cruciferous plants in the world which has destructive effects on the rapeseed, Brassica napus L. In this research, for accurate estimating of the cabbage aphid population, three sampling methods (photography, measuring the average length of the infected stem and average weight of the aphid) as the main treatments were separately compared to direct count method, as the control treatment during budding, flowering and sheathing stages of rapeseed. For each stage, twenty-two canola plants were chosen and from each chosen plant, top stem covering completely by the aphids was selected as the sampling unit. The results showed that measuring the average length of the infected stem and average weight of aphid methods were significant difference with direct count method during budding, flowering and sheathing stages. However, there was no significant difference between photography and direct count methods during budding stage. Based on this, the photography method with maximum average of correction factor (0.790), coefficient of determination (0.9315) and relative net precision (RNP) (51.56) is the best and most accurate technique for precise estimation of cabbage aphid population during budding period. According to the obtained results of this study, choosing the correct sampling method at the right time can promote the integrated management programs of cabbage aphid.

کلیدواژه‌ها [English]

  • Brevicoryne brassicae
  • Brassica napus
  • population estimation
  • photography method
  • relative net precision

 © 2023 by Author(s), Published by the Entomological Society of Iran

This Work is Licensed under Creative Commons Attribution-Non Commercial 4.0 International Public License

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