پاسخ برخی خصوصیات مورفوفیزیولوژیکی گاوزبان (Borago officinalis L) به محلول پاشی نانو ذرات تیتانیوم

نوع مقاله : علمی پژوهشی


1 دانشجوی کارشناسی ارشد، دانشکده کشاورزی، واحد شهر قدس، دانشگاه آزاد اسلامی، شهرقدس، ایران

2 استادیار گروه زراعت، دانشکده کشاورزی، واحد شهر قدس، دانشگاه آزاد اسلامی، شهرقدس، ایران

3 دانشجوی دکتری اصلاح نباتات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران


گیاه گاوزبان از نظر دارویی از اهمیت خاصی برخوردار است. بنابراین، اثر تیمارهای متفاوت نانو ذرات تیتانیوم (0/01، 0/03 و 0/05%) و تیتانیوم غیرنانو در مراحل مختلف رشد گیاه بر روی ویژگی­ های مورفوفیزیولوژیکی گاوزبان در مراحل 5-4 برگی، گلدهی و 15 روز پس از گلدهی، طی یک آزمایش فاکتوریل در قالب طرح بلوک­ های کامل تصادفی با چهار تکرار در سال زراعی 1391 در مزرعه کشاورزی روستای رمنت، شهرستان بابل از استان مازنداران اجرا گردید. نتـایج این مطالعه اختلاف معنی­ داری را برای صفات مورد مطالعه در تیمارهای مختلف تیتانیوم، زمان مصرف و اثرات متقابل بین آنها نشان داد. صفات وزن تر برگ، وزن خشک برگ و وزن تر ساقه در سطح احتمال 1% و صفات ارتفاع بوته، وزن خشک ساقه، وزن تر بوته و وزن خشک بوته در سطح احتمال 5% اختلاف معنی­ داری را در اثرات متقابل تیمارهای تیتانیوم و زمان مصرف آنها نشان دادند. بیشترین ارتفاع بوته، وزن خشک برگ و وزن تر و خشک کل بوته از تیمارهای مربوط به نانو ذرات تیتانیوم و در زمان پس از گلدهی و بیشترین وزن تر برگ، وزن تر ساقه و وزن تر کل بوته در تیمار مربوط به تیتانیوم غیرنانو و در زمان گلدهی حاصل شدند. آنزیم گلوتاتیون پراکسیداز کمترین میزان را در تیمار نانو تیتانیوم 0/01% و در زمان 15 روز بعد از گلدهی نشان داد. به­ طورکلی نتـایج این مطالعه نشـان می­ دهد که اختلاف معنی­ داری بین تیمارهای تیتانیوم غیرنانو و نانو ذرات تیتانیوم، خصوصاً در زمان اعمال آنها در گاوزبان، وجود دارد. تیمارهای مورد استفاده تیتانیوم غیرنانو در زمان گلدهی و نانو ذرات تیتانیوم در زمان بعـد از گلدهی می­ توانند در افزایش عملکرد سرشاخه­ های گلدار گاوزبان مؤثر باشند.   


عنوان مقاله [English]

Response of Some Morpho-physiological Characteristics of Borago (Borago officinalis) to Nano Particles of Titanium Spraying

نویسندگان [English]

  • Roufiya Heydary Romy 1
  • Payam Moaveny 2
  • Hossein Hoseinpour Darvishy 2
  • Mahdi Arefrad 3
1 M.Sc. Student, Faculty of Agricultural and Plant Breeding, ShahreQods Branch, Islamic Azad University, ShahreQods, Iran
2 Assistant Prof., Faculty of Agricultural and Plant Breeding, ShahreQods Branch, Islamic Azad University, ShahreQods, Iran
3 Ph.D. Student of Plant Breeding, Sari Agricultural Sciences and Natural Recourses University (SANRU), Sari, Iran
چکیده [English]

Brago is an important medicinal plant. This study, thus, was conducted with different levels of nano particles of titanium (0.01, 0.03 and 0.05%) and elemental titanium on its different growth stages (4-5 leaf, flowering and after flowering) with four replications in a factorial experiment based on randomized complete block design at the Agricultural Field of Rement Village of Babol, Mazandaran, Iran, in 2012. Results showed that there were a significant differences between treatments of titanium, time of treatments and between their interactions. Among the traits under study, leaf fresh weight, leaf dry weight, stem fresh weigh at 1% and plant hight, stem dry weight, total plant fresh weight and total plant dry weight at %5 levels of probabilities showed significant differences for their interaction between different treatments of titanium and different stage of development. The highest plant height, leaf dry weight and plant fresh weight and plant dry weight were produced when nano particles of titanium applied after flowering stage. Where as, the highest fresh leaf, fresh stem weight and total plant fresh weights were obtained when plants treated with titanium at flowering stage. On the other hand, dry weight of flowering branches showed significant negative correlation with GPX antioxidant enzyme. The lowest GPX antioxidant enzyme was produced when nano particles of titanium were applied after flowering stage at 0.01% probability level. As a whole, the results of this experiment suggest that there are significant differences among titanium treatments when they are applied at different growth stages of this plant. This study also showed that application of nano particles of titanium after flowering of this plant increased its flowering branches.

کلیدواژه‌ها [English]

  • Antioxidant enzymes
  • Borago
  • Malondialdehyde
  • Morphological traits
  • Nano particles of titanium
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