مطالعه بیوسیستماتیکی گونه ی دارواش کوتوله (Santalaceae) oxcyderi Arceuhobium در منطقه چهارباغ (استان گلستان)

نویسندگان

1 دانشگاه گنبدکاووس

2 دانشگاه قم

چکیده
گونه­ی Arceuthobium oxycedri (دارواش کوتوله)، اختصاصا روی گونه­های سرو کوهی رشد کرده و آن­ها را آلوده می­کند. گیاه نیمه انگلی مذکور در ایران در سه رویشگاه ارس رضا آباد استان سمنان، منطقه چهار باغ گرگان و در استان زنجان مشاهده شده است. در این تحقیق شاخص­های آناتومی و صفات ریزریخت­شناسی گونه با هدف کمک به شناسایی این گونه نیمه انگلی گیاهی در استان گلستان مورد ارزیابی قرار گرفت. برای تخمین آلودگی درختان ارس توسط گیاه نیمه انگلی دارواش کوتوله نمونه برداری در منطقه چهارباغ گرگان در سطح 600 هکتار و با استفاده از 60 قطعه نمونه و به ابعاد 20×20 متر مربع به صورت تصادفی_ سیستماتیک انجام شد. برشی عرضی ساقه نشان داد که در هر 3 ارتفاع دارای سطح مقطع نیم دایره­ای، دارای کلروفیل­ و از نظر ضخامت پوست و اندازه مغز باهم تفاوتی ندارند. مطالعات دانه گرده نشان داد که تمامی دانه­های گرده به صورت منفرد، دارای سه تا پنج شیار عمیق و نامتقارن، شیارها از نظر اندازه کوچک و بزرگ هستند (Tricolpate). از لحاظ شکل مخروطی کروی (Oblatespheroidal) با تزئینات اگزین خاردار (Echinate) می­باشند. در مجموع با توجه به اینکه این تحقیق برای اولین بار بر روی گونه دارواش کوتوله انجام می شود یافته های آن برای شناسایی گونه های مشابه که در سایر رویشگاههای ارس ایران گزارش شده ارزش سیستماتیکی دارد.

کلیدواژه‌ها


عنوان مقاله English

Biosystematic study of Arceuthobium oxcyderi (D.C.) M. Bieb species in Chahar-bagh region, Golestan province

نویسندگان English

Sona Noroozi 1
Abolfazl Daneshvar 1
Ali Sattarian 1
elham Amini 1
Fatemeh Nasrollahi 2
1 Gonbad Kavous University
2 University of Qom
چکیده English

Arceuthobium oxycedri is commonly known as dwarf mistletoe and grows on and infects cypress species. The semi-parasitic plant was observed in three locations of Juniper Reza Abad in Semnan Province, Chahar Bagh Area of Gorgan and Zanjan Province. In this study, the anatomical and micromorphological characteristics of the species were evaluated to facilitate the identification of this semi-parasitic species in Golestan province. The outcomes of the analysis indicated that the estimation of infestation rate in dwarf shrub trees is unattainable through factors such as canopy percentage, stand gender, slope percentage, and slope orientation. Examination of the stem's transverse section revealed that, across all three elevations, there were no variations in brain size between the semicircular cross-section and the sink's thickness. Analysis of pollen demonstrated that every pollen grain is classified as Monad, exhibiting three to five deep and asymmetric grooves of varying sizes (tricolpate). In regards to their morphology, they exhibit an oblatespheroidal shape adorned with sharp exine decorations. Overall, given the novelty of this study on dwarf mistletoe species, the discoveries hold significant systematic implications for the identification of analogous species documented in alternative juniper habitats within Iran.

کلیدواژه‌ها English

Anatomy
Golestan Province
Host plant
micromorphology
Pollen grain
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  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405