تأثیر افزایش طول روز با شدت‌های مختلف نور مکمل بر عملکرد کمی و کیفی رز شاخه بریده رقم ‏‎‘Dolce vita’‎

نوع مقاله: مقاله کامل

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران

2 استادیار، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران

3 دانشیار، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران

چکیده

به منظور بررسی تأثیر افزایش طول روز و شدت نور در طی پاییز و زمستان بر عملکرد کمی و کیفی رز شاخه‌بریده رقم ‘Dolce vita’، آزمایشی در قالب طرح کاملاً تصادفی با نه تکرار انجام شد. بوته‌های رز به مدت یک دورۀ گلدهی تحت تیمار افزایش طول روز تا 16 ساعت با شش سطح از شدت نور شامل صفر، 85، 170، 255 و 340 µmol m-2 s-1 با استفاده از لامپ بخار سدیم و 85 µmol m-2 s-1 با استفاده از لامپ LED قرار گرفتند. شاخص‌های مهم عملکرد کمی و کیفی از جمله طول شاخه، قطر ساقه، مدت زمان لازم برای برداشت گل، تعداد جوانه گل بعدی، کیفیت ظاهری و عمر گلجایی تحت تأثیر تیمارهای نور مکمل قرار گرفتند. با استفاده از نور مکمل به‌طور میانگین مدت زمان لازم برای برداشت گل شاخه‌بریده حدود 5 روز نسبت به تیمار شاهد کاهش یافت. بیشترین تعداد جوانه گل در شدت نور 85 µmol m-2 s-1با استفاده از لامپ بخار سدیم مشاهد شد. در بسیاری از صفات از جمله ارتفاع بوته و طول شاخه، قطر ساقه در زیر گل، تعداد برگ، طول و عرض برگ، وزن تر و خشک ساقه، شاخص کیفیت گل و عمر پس از برداشت، بهترین تیمار، افزایش طول مدت روشنایی با شدت نور 340 µmol m-2 s-1بود.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of long-day treatment using different supplemental light intensities on ‎quantitative and qualitative traits of Rosa hybrida ‘Dolce vita’‎

نویسندگان [English]

  • Leila Shahkaram 1
  • Alireza Khaleghi 2
  • Ali Khadivi 3
  • Mousa Solgi 3
1 Former M.Sc. Student, Faculty of Agriculture and Natural Resources, Arak University, ‎Arak, Iran
2 Assistant Professor, Faculty of Agriculture and Natural Resources, Arak University, Arak, Iran
3 Associate Professor, Faculty of Agriculture and Natural Resources, Arak University, Arak, Iran
چکیده [English]

In prder to investigate the effect of long-day treatment during autumn and winter on quantitative and qualitative characteristics of Rosa hybrida ‘Dolce vita’, an experiment was conducted in completely randomized design with nine replications. Rose bushes were treated with increasing length of photoperiod to 16-h under six levels of light intensity includes 0, 85, 170, 255 and 340 µmol m-2 s-1 using HPS lamp and 85 µmol m-2 s-1 using LED lamp. Important factors of quantitative and qualitative yield such as shoot length, stem diameter, time of harvesting, renewal bud formation, quality index and vase life were affected by supplemental light treatments. Using supplemental light, the average time required for harvesting the flower was around five days lesser than the control plants. The highest number of renewal bud formation was observed in light intensity of 85 µmol m-2 s-1 using HPS lamp, respectively. In many traits such as plant height and stem length, stem diameter under flower, leaf number, leaf length and width, fresh and dry stem weight, flower quality index and vase life, 340 µmol m-2 s-1 light intensity was the best treatment.

کلیدواژه‌ها [English]

  • HPS lamp
  • LED
  • Quantitative and Qualitative yield
  • supplemental light‎
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