کیفیت نشاء و میوه‌ گوجه‌فرنگی Solanum lycopersicum L. رقم سوپرآ در پاسخ به تغذیه ساکارز و اسیدبوریک

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه علوم باغبانی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

2 دانشجوی سابق کارشناسی ارشد علوم باغبانی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

3 دانشیار گروه علوم خاک، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

4 استاد گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

5 گروه باغبانی - دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

چکیده

ساکارز به‌عنوان منبع کربوهیدرات و بور به‌عنوان عامل تأثیرگذار در انتقال کربوهیدرات، در رشد نشاها تأثیر مثبت دارد. در این تحقیق به اثر تغذیه ساکارز و اسیدبوریک روی کیفیت نشا در خزانه و میوه گوجه‌فرنگی در مزرعه پرداخته شده است. ابتدا بذور رقم سوپرآ در سینی نشا کشت شدند.‌ نشاها به دو گروه 1- محلول‌پاشی در خزانه، 2- محلول‌پاشی پس از انتقال به مزرعه، تقسیم شدند. محلول‌پاشی هر گروه طی سه مرحله با غلظت‌های 0، 5 و 10 درصد ساکارز و 0،‌ 1/0 و 2/0 درصد اسیدبوریک، انجام شد. نتایج نشان داد که تغذیه با ساکارز و بور در خزانه، طول نشا و سطح برگ را تا 30 درصد نسبت به شاهد کاهش داد که برای کاهش استرس ناشی از انتقال به مزرعه مناسب می‌باشد. در نتیجه‌ی کاهش رشد قسمت هوایی، نسبت ریشه به ساقه نشاها تا 35 درصد نسبت به شاهد افزایش یافت. همچنین محلول‌پاشی نشاها با 10 درصد ساکارز همراه با 1/0 درصد اسیدبوریک، موجب افزایش وزن خشک ساقه نشا تا 04/0 گرم و کاروتنوئید تا 214/0 میلی‌گرم در گرم وزن‌تر شد. پس از انتقال به مزرعه نیز، بیشترین تعداد گل با 86/114 و بالاترین تعداد خوشه با 7/19 عدد در اسیدبوریک 2/0 درصد مشاهده شد. همچنین افزایش تعداد میوه تا 70/18 عدد در ساکارز پنج درصد همراه با اسیدبوریک 1/0 درصد نسبت به شاهد (40/10 عدد) دیده شد. به‌طور کلی بالا بردن ذخایر کربوهیدراتی نشا از طریق محلول‌پاشی با ساکارز عامل کلیدی استقرار در مزرعه می‌باشد. از طرف دیگر بور انتقال ساکارز را درون گیاه میسر می‌سازد.

کلیدواژه‌ها


عنوان مقاله [English]

Seedling and fruit quality of tomato (Solanum lycopersicum Var. SuprA) in response to spraying sucrose and boric acid

نویسندگان [English]

  • Kambiz Mashayekhi 1
  • Zeynab Keykha 2
  • Seyed Alireza Movahedi Naeini 3
  • Behnam Kamkar 4
  • Seyed Javad Mousavizadeh 5
1 Department of Horticultural Science, University of agricultural science and natural resources, Gorgan, Iran.
2 Department of Horticultural Science, University of agricultural science and natural resources, Gorgan, Iran.
3 Department of Soil Science, College of plant production, University of agricultural science and natural resources, Gorgan, Iran.
4 Department of Agronomy, University of agricultural science and natural resources, Gorgan, Iran.
5 Department of Horticultural Science, University of agricultural science and natural resources, Gorgan, Iran.
چکیده [English]

Sucrose and boron as a source of carbohydrates and an effective factor in carbohydrate transport, respectively heve positive effects on seedlings’ growth. In this study, the effect of spraying sucrose and boric acid were evaluated on seedlings and fruits quality of tomato in the nursury and field, respectively. Tomato seeds (Var. SuprA) were planted in seedling tray. Seedlings were subdivided into two groups for foliar application: 1- were sprayed in the nursery, and 2- were sprayed after transplanting into the soil. Foliar application of each group was performed in three stages with concentrations of 0, 5 and 10% sucrose and 0, 0.1 and 0.2% boric acid. The results revealed that nutrition of sucrose and boric acid in nursery reduced seedlings’ height and leaf area upto 30 percent in comparison to the control, which might be desirable to tolerate the potential stress caused by transplanting process. Because of decreased shoot growth, the root to shoot ratio of seedlings increased by all treatments containing sucrose upto 35 percent compared to control. Spraying with 10 percent sucrose and 0.1 percent boric acid in nursery were significantly improved shoot dry weight to 0.04 g and carotenoid upto 0.214 mg/gFW. Also, tomato seedlings sprayed with sucrose and boric acid immediately after transplanting had positive effects on plants growth. The highest number of flowers (114.86) and the highest number of clusters with (19.7) were recorded for 0.2 percent boric acid treatment. Maximum number of fruits per plant (18.70) was recorded for spraying sucrose 5 percent plus boric acid 0.1 percent. For coclusion, increasing the carbohydrate content of transplant through sucrose foliar application is a key factor in plant establishment. It was also found that the boron element allows sucrose transfer into the plant. The simultaneous use of sucrose and boron improved sucrose absorption rates in the plants.

کلیدواژه‌ها [English]

  • Carbohydrate
  • Foliar application
  • growth
  • Lycopene
  • Nursery

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