تأثیر کاربرد برگی پلی‌آمین‌ها بر ویژگی‌های رشدی، عمر گل‌جایی و میزان تنظیم‌کننده‌های رشد درونی گل رز رقم دولس ویتا

نوع مقاله: مقاله کامل

نویسندگان

1 استادیار، باشگاه پژوهشگران جوان و نخبگان، واحد یاسوج دانشگاه آزاد اسلامی- واحد یاسوج، یاسوج، ایران

2 استادیار، گروه علوم باغبانی، واحد شیراز، دانشگاه آزاد اسلامی- واحد شیراز، شیراز، ایران

چکیده

 بهبود رشد و گلدهی با کاربرد پلی­آمین­ها در گیاهان مختلفی گزارش شده ­است. بنابراین در این پژوهش کاربرد برگی پلی­آمین­های برون­زاد بر ویژگی‌های کمی، عمر گل­جایی (Vase life)، میزان تنظیم‌کننده­های رشد درونی و پلی­آمین­های درونی گل رز بررسی شد. بدین منظور، آزمایشی به‌صورت طرح بلوک­های کامل تصادفی با ده تیمار، سه تکرار و دو بوته در هر تکرار در یک گلخانة آبکشتی (هیدروپونیک) تجاری در شهر یاسوج انجام گرفت. تیمارها شامل محلول­پاشی بوته­ها با پوتریسین در غلظت­های 1، 2 و 3 میلی­مولار، اسپرمیدین در غلظت­های 5/0، 1و 5/1 میلی­مولار و اسپرمین در غلظت­های 1، 2و 4 میلی­مولار و شاهد (آب مقطر) بود. نتایج نشان داد، بیشترین و کمترین میزان ارتفاع و وزن شاخه به ترتیب در تیمارهای اسپرمیدین 5/1 میلی­مولار و شاهد به دست آمد. کاربرد پلی­آمین­ها باعث افزایش عمر گل­جایی شد به­طوری­که بیشترین عمر گل­جایی به میزان شانزده روز در گیاهان تیمارشده با اسپرمین 1 میلی­مولار مشاهده شد. بیشترین میزان غلظت ایندول­استیک­­اسید، اسیدجیبرلیک و زاتین در برگ گیاهان محلول­پاشی شده با غلظت 4میلی­مولار اسپرمین مشاهده شد. همچنین بیشترین میزان اسیدآبسایزیک در برگ گیاهان محلول­پاشی شده با اسپرمیدین 5/1 میلی­مولار به دست آمد. کاربرد پلی­آمین­های برون­زاد باعث افزایش میزان پوتریسین و اسپرمیدین درونی برگ شد. نتایج کلی این پژوهش نشان داد که کاربرد اسپرمیدین در غلظت 5/1 میلی‌مولار و اسپرمین 4 میلی‌مولار برون­زاد به دلیل افزایش غلظت مواد تنظیم‌کنندۀ رشد و پلی‌آمین‌های درونی، باعث بهبود ویژگی‌های رویشی و افزایش عمر گل­جایی گل رز رقم دولس ویتا شد. 

کلیدواژه‌ها


عنوان مقاله [English]

Effect of foliar application of polyamines on growth properties, vase life and endogenous plant growth regulators contents of cut rose flower (Rosa hybrida cv. Dolcvita)

نویسندگان [English]

  • Mehdi Hosseini Farahi 1
  • Masoud Zadehbagheri 2
1 Assistant Professor, Young Researcher and Elite Club, Yasooj Branch, Islamic Azad University, Yasooj, Iran
2 Assistant Professor, Department of Horticulture Science, Shiraz Branch, Islamic Azad University, Shiraz, Iran
چکیده [English]

Improvement of growth and flowering with polyamines application has been reported in different plants. So, in this study application of exogenous polyamines on quantitative characteristics, vase life and endogenous hormones and polyamines contents in rose flower was investigated. For this purpose, an experiment was conducted as randomized complete block design (RCBD) with ten treatments, three replications and two observations in each replication in a hydroponic greenhouse in Yasouj city. Treatments were including foliar application of putricine (Put) at 1, 2 and 3 mM, spermidine (Spd) at 0.5, 1 and 1.5 mM, spermin (Spm) at 1, 2 and 4 mm and control. The highest and the lowest fresh weight and flower height were obtained in the plants treated with Spd 1.5 mM and control, respectively. Foliar application of polyamines increased the vase life, so that maximum vase life (16 days) was observed in treated flowers with Spm 1 mM as compared to the other treatments. The highest content of IAA, GA3 and zeatin obtained in treated flowers with Spm 4 mM. The highest ABA content was found in treated flowers with Spd 1.5 mM. The use of exogenous polyamine increased the internal Put and Spd contents. So, the final results of this study revealed that exogenous application of 1.5 mM Spd and 4 mM Spm due to increasing of internal hormones and PAS, caused to increase of vegetative properties and vase life of rose cv. Dolcvita.

کلیدواژه‌ها [English]

  • IAA
  • GA3
  • Put
  • Spd
  • Spm and Zeatin
 

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