تأثیر محلول‌پاشی پوترسین و نیترات پتاسیم در بهبود رشد رویشی و زایشی درخت به رقم اصفهان

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی سابق کارشناسی ارشد، دانشکدۀ کشاورزی، دانشگاه شهید باهنر کرمان

2 استادیار، دانشکدۀ کشاورزی، دانشگاه شهید باهنر کرمان

چکیده

امروزه از هورمون­ها و عناصر غذایی به‌منظور بهبود رشد رویشی و زایشی در بسیاری از محصولات کشاورزی در جهان استفاده می­شود. هدف از انجام این تحقیق، افزایش تشکیل میوه، وزن میوه و در نهایت افزایش عملکرد در راستای بهبود رشد رویشی با استفاده از تیمارهای پوترسین (0، 01/0، 001/0 مولار) و نیترات پتاسیم (0، 2 و 4 درصد) و همچنین اثرهای متقابل آن‌ها روی درخت میوه به رقم اصفهان بوده است. بدین منظور محلول‌پاشی روی درختان طی دو مرحلۀ نوک‌سبز و تمام گل به‌صورت یک آزمایش کرت‌های خردشده (اسپلیت) فاکتوریل در قالب طرح بلوک­های کامل تصادفی با چهار تکرار انجام شد. مقایسۀ میانگین­ها نشان داد تیمارهای پوترسین 01/0 مولار به تنهایی و همراه با نیترات پتاسیم 4 درصد و 2 درصد تأثیر معنی­داری در افزایش درصد تشکیل میوه، میانگین وزن میوه و عملکرد داشتند. تیمارهای پوترسین و نیترات پتاسیم سبب افزایش سطح برگ، شاخص سبزینه (کلروفیل) و افزایش طول شاخۀ سال جاری در مقایسه با شاهد شدند. بنا بر نتایج، تیمارهای پوترسین و نیترات پتاسیم با غلظت بالاتر و ترکیب همراه آن‌ها در بیشتر صفات اندازه­گیری‌شده به عنوان بهترین تیمارها و محلول‌پاشی در مرحلۀ نوک‌سبز به عنوان بهترین زمان کاربرد در این پژوهش معرفی شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effects of putrescine and potassium nitrate spray on improvement of vegetative and reproductive growth of quince (Cydonia oblonga cv. Esfahan) fruits

نویسندگان [English]

  • Mahsa Ahmadi Pour 1
  • Zahra Pakkish 2
  • Vahidreza Saffari 2
1
2
چکیده [English]

Today, hormones and nutrients are used in order to improve vegetative and reproductive growth of many agricultural products in the world. The purpose of this study, was to increase fruit set, fruit weight, and finally, increase of yield along with improvement of vegetative growth with putrescine treatments (0, 0.01, 0.001M) and potassium nitrate (0, 2 and 4%) of quince (Cydonia oblonga cv. Esfahan) fruits. Trees were sprayed at two stages of bud tip green and full bloom, as a split-factorial experiment in a randomized complete block design with four replications. Comparison of means showed 0.01 M putrescine treatment alone or in combintion with potassium nitrate (4 and 2%) showed a significant effect on increasing percent of fruit set, average fruit weight and yield. Putrescine and potassium nitrate treatments also could increase leaf area, leaf chlorophyll index and the length of current season shoots compared to the control. Results showed that, treatments with higher concentrations of putrescine and potassium nitrate as well as their combination had the best effect on measured parameters. In addition, spraying in green tip stage was the best timing to improve the measured characteristics.

کلیدواژه‌ها [English]

  • fruit weight
  • leaf area index
  • Leaf chlorophyll
  • shoot length
  • yield

مراجع

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سابقه مقاله

  • تاریخ دریافت: 17 تیر 1393
  • تاریخ بازنگری: 20 بهمن 1393
  • تاریخ پذیرش: 21 بهمن 1393

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