اثر تنظیم کننده های رشد گیاهی و سرما در بهبود ویژگی های مورفولوژیک سینرر (Pericallis × hybrida)

علوم باغبانی

مقاله 9، دوره 31، شماره 2، شهریور 1396، صفحه 257-268   

نوع مقاله: مقالات پژوهشی

شناسه دیجیتال (DOI): 10.22067/jhorts4.v0i0.50419

نویسندگان

کاظم بشیری؛ ابوالفضل جوکار^*

دانشگاه شیراز

چکیده

کاربرد خارجی تنظیم کننده‌های رشد یک راهکار شناخته شده برای افزایش کیفیت، عملکرد و تولید خارج از فصل گلها است. بدین منظور جهت برطرف کردن نیاز سرمایی و تولید خارج از فصل گل سینرر و بهبود صفات مورفولوژیکی آن، آزمایشی در قالب طرح کاملاً تصادفی با 5 تکرار انجام شد. تیمارها شامل تیمار سرمایی (شاهد)، جیبرلین 100 میلی گرم در لیتر در زمان‌های مختلف (قبل از تیمار سرمایی، اواسط تیمار سرمایی و بعد از تیمار سرمایی)، جیبرلین (100و 200 میلی گرم در لیتر)، بنزیل آدنین (150 و 300 میلی گرم در لیتر) و پاکلوبوترازول (250 و 500 میلی گرم در لیتر) بودند. نتایج نشان داد که جیبرلین می‌تواند جایگزین نیاز سرمایی سینرر برای گلدهی شود. تیمار mg/L 100جیبرلین + mg/L250 پاکلوبوترازول باعث شد تا نسبت به شاهد گلدهی سینرر به مدت 32 روز تسریع و طول عمر گل‌ها 24 روز افزایش یابد. تیمار سرمایی همراه با پاکلوبوترازول به غلظت 500 میلی‌گرم در لیتر با ایجاد شکل جدید پاکوتاه و افزایش قطر گلها بالاترین کیفیت ظاهری را بدست داد. در مجموع با توجه به اینکه تیمار 100 میلی‌گرم در لیتر جیبرلین همراه با 300 میلی‌گرم در لیتر بنزیل‌آدنین علاوه بر جایگزینی نیاز سرمایی سینرر برای گلدهی، دوره رشد آن را 21 روز کاهش داد و توانست وزن تر و خشک شاخساره، وزن تر ریشه، سطح برگ، ارتفاع گیاه، قطر ساقه، کیفیت ظاهری، تعداد گل و عمر گلدانی آن را افزایش داد، می‌توان آن را به عنوان تیمار برتر معرفی کرد.

کلیدواژه‌ها

زودرسی؛ سینرر؛ عمر گلدانی؛ کیفیت ظاهری

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