بررسی خصوصیات نتاج حاصل از دورگ‎گیری در گل سیکلامن (Cyclamen persicum Mill.)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استاد، گروه علوم باغبانی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

2 کارشناس ارشد، گروه علوم باغبانی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

3 دانشیار، گروه علوم باغبانی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

چکیده

‌ایجاد تنوع در گل و گیاهان زینتی همواره مد نظر به‏نژادگران است. به‌‏‏منظور دست‏یابی به این مهم در گیاه سیکلامن ایرانی، تلاقی کنترل‌شده بین ژنوتیپ‏های مختلف‏ آن با رنگ‏ و شکل‏های‏ متنوع گل و طرح‏های مختلف روی برگ صورت پذیرفت. نتایج نشان داد که دورگ‎گیری، عاملی برای ایجاد تنوع در ویژگی‏های گل بود‌، به‌طوری‏که رنگ و شکل گل در 15 ژنوتیپ نسبت به والدین متفاوت بود، اما نتاج از نظر شکل طرح‏های سفید روی برگ با والدین خود اختلاف چندانی نشان ندادند. دگرگشنی در مقایسه با خودگشنی تأثیر به‏سزایی در افزایش سرعت رشد و کاهش مدت زمان لازم برای ظهور اولین گل در گیاهان به‌دست‌آمده داشت. به‌طور میانگین نتاج حاصل از دورگ‎گیری دو ماه سریع‏تر به مرحلۀ گلدهی رسیدند. متوسط تعداد گل تولید‌شده نیز در این نتاج بالاتر از تعداد آن در والدین (با میانگین 7/1 برابر) بود. از نظر میزان رشد، در تعدادی از تلاقی‏ها نتاج نسبت به والدین برتری نشان ‏دادند و در تعدادی دیگر رشد آنها نسبت به والدین کمتر بود. به‌طورکلی، دورگ‎گیری در سیکلامن برای ایجاد گیاهانی متنوع با سرعت رشد بیشتر و نمای گلی مناسب، توصیه می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

Evaluating features of cyclamen (Cyclamen persicum Mill.) progenies resulted from cross pollination

نویسندگان [English]

  • Rouhangiz Naderi 1
  • Mohammad Kermanshahani 2
  • Mohammadreza Fattahi 3
  • Ahmad Khalighi 1
1 Professors, Department of Horticultural Sciences, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
2 Former M.Sc., Department of Horticultural Sciences, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
3 Associate Professor, Department of Horticultural Sciences, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
چکیده [English]

s
Variety creation in ornamental plants is always considered by the breeders. To achieve this goal, controlled crosses were performed among various cyclamen genotypes with different flower color, shape and leaf pattern. The results showed that crossing is effective for creating varieties with new flower characteristics in cyclamen. 15 genotypes with different flower color and shape were obtained, but white leaf patterns in more progenies were similar to the feature of their parents. In comparison to self-pollination, cross-pollination had a great influence in increasing growth rate and also in reducing required time for flowering. In general, progenies resulted from crossing compared to those from self-pollination, flowered two months earlier. Mean flower number in these progenies was averagely 1.7 times higher than that of their parents. In terms of growth rate, the progenies from cross-pollination had either more or less growth rather than parents. In conclusion, it is of worth to consider cross pollination as an effective way to create varieties with high growth rate and proper floral view in cyclamen.

کلیدواژه‌ها [English]

  • flower color and shape
  • Flower number
  • growth rate
  • leaf patterns
  • pair cross

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  • تاریخ دریافت: 06 آذر 1392
  • تاریخ بازنگری: 17 تیر 1393
  • تاریخ پذیرش: 08 شهریور 1393

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