بررسی اثر دما و غلظت GR60 بر جوانه‌زنی بذر دو گونه گل‌جالیز و رشد آن ها در حضور گوجه‌فرنگی و توتون

نویسندگان

1 دانشیار، بخش تحقیقات علف‌های‌هرز، مؤسسه تحقیقات گیاه‌پزشکی کشور، تهران

2 استادیار، گروه زراعت، دانشگاه آزاد اسلامی واحد ساوه، تهران

3 استادیار، بخش تحقیقات علف‌های‌هرز، موسسه تحقیقات گیاه‌پزشکی کشور، تهران

چکیده

به منظور بررسی تأثیر دمای محیط و غلظت GR60 بر جوانه‌زنی بذر دو گونه گل‌جالیز و رشد آنها در حضور میزبان‌های گوجه‌فرنگی و توتون، دو آزمایش مجزا در شرایط کنترل‌شده در بخش تحقیقات علف های هرز موسسه گیاهپزشکی کشور در سال 1387 انجام شد. در آزمایش اول سه عاملی غلظت GR60 در چهار سطح صفر، یک، دو و پنج قسمت در میلیون، گونه دو گل‌جالیز Orobanche aegyptiaca و Orobanche cernua و سه دمای مختلف محیط 10، 20 و 30 درجه سانتی‌گراد در قالب طرح کاملاً تصادفی با پنج تکرار و با ساختار فاکتوریل اجرا شد. در آزمایش دوم تأثیر سه دمای 15، 20 و 30 درجه سانتی‌گراد بر رشد گوجه‌فرنگی و توتون تحت آلودگی O. aegyptiaca، O. cernua و شاهد بدون گل‌جالیز مورد بررسی قرار گرفت. نتایج نشان داد که GR60 قادر به تحریک جوانه‌زنی بذور هر دو گونه گل‌جالیز بود و با افزایش دمای محیط تا 20 درجه سانتی‌گراد جوانه‌زنی بذر انگل روند رو به افزایشی نشان داد. گونه O. cernua در مقایسه با گونه O. aegyptiacaبرای حداکثر جوانه‌زنی بذر به غلظت کمتری از GR60 نیاز داشت. با افزایش دمای محیط، وزن خشک ساقه هر دو گونه انگل افزایش و سپس کاهش نشان داد. آلودگی بوته‌های گوجه‌فرنگی و توتون به گل‌جالیز، سبب افزایش ارتفاع و کاهش وزن خشک این دو گیاه شد.

کلیدواژه‌ها


عنوان مقاله [English]

Study the effects of temperature and GR60 concentration on seed germination of two broomrape speicies and their growth in presence of tomato and tobacco

نویسندگان [English]

  • Mohammad Ali Baghestani Meibodi 1
  • Manouchehr Jam nejad 2
  • Mahdi Mainbashi Moeini 3
  • Faribi Meighani 3
چکیده [English]

In order to study the effect of environment temperature and GR60 concentration on seed germination and growth of Orobanche aegyptiaca and Orobanche cernua, two experiments were conducted under controlled conditions in Weed Research department of Iranian Research Institute of Plant Protection in 2008. The first experiment was established as a completely randomized design with factorial arrangement of treatments and five replications. The first factor was GR60 concentration (zero, one, two and five ppm), the second factor was broomrape species (O. aegyptiaca and O. cernua), and the third factor was temperature (10, 20 and 30?C). The second experiment was also conducted with the same statistical design and species, temperature at three levels (15, 20 and 30?C) and host plants at two levels (tomato and tobacco). Results indicated that GR60 stimulated seed germination of both broomrape species. Broomrape germination increased up to 20?C. O. cernua needed less GR60 for maximum germination compared to that of O. aegyptiaca. Stem weight of broomrape species increased by moderate increase in temperature.

کلیدواژه‌ها [English]

  • Broomrape
  • dose-response
  • dry weight
  • germination
  • Strigol

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