تنوع صفات ریخت شناختی گل سردۀ .Alchemilla L (تیرۀ گل سرخیان) در ایران و اهمیت تاکسونومیکی آن

نویسندگان

1 دانشگاه گیلان

2 دانشگاه ایلام

چکیده
. صفات ریخت­ شناختی گل در 24 گونه‌ از سردۀ Alchemilla L. در ایران، با استفاده از میکروسکوپ نوری و دیجیتالی تحت مطالعه قرار گرفت. بدین منظور، نمونه­ های گل­ ازگونه­ های مختلف جمع­ آوری و صفات ریخت ­شناختی آنها شامل صفات مرتبط به هیپانتیوم، کاسبرگ­، دمگل، پرچم برچه اندازه‌گیری شد. یافته­ های این تحقیق نشان داد که شکل و طول کاسبرگ اصلی، طول هیپانتیوم، موقعیت کرک روی کاسبرگ و دمگل از جمله صفات با ارزش تشخیصی و مناسب برای تفکیک گونه ­ها هستند. برای تعیین روابط بین گونه‌ها، از روش­ های تجزیه مؤلفه ­های اصلی (PCA) و تحلیل خوشه ­ای (CA) استفاده شد. برای این کار هفده صفت کمی و کیفی انتخاب شد و تحلیل شدند. نتایج حاصل از روش­های UPGMA و PCA با هم و با رده­بندی رایج هم­خوانی داشتند.

کلیدواژه‌ها


عنوان مقاله English

Diversity in floral morphological characters of the genus Alchemilla L. (Rosaceae) from Iran and its taxonomic significance

نویسندگان English

Marzieh Beygom Faghir 1
Atefe Ahmadi Gorji 1
Mehdi Heydari 2
1 University of Guilan
2 University of Ilam
چکیده English

Floral morphology of 24 species of the genus Alchemilla in Iran was studied by means of light and digital mi-croscopes. Flower samples were collected from different species and their morphological traits, including hypanthium, calyx, epicalyx, pedicels, ovaries and stamens, were measured. The most useful features for the separation of species were turned out to be the calyx shape and length, trichomes position on calyx and pedicle. Principal Component Anal-ysis (PCA) and Cluster Analysis (CA) were used to determine the potential contribution of floral morphological char-acters in the expression of species relationships. A total of 17 qualitative and quantitative characters were utilized in both analyses. The results of UPGMA and PCA methods were found to be consistent and in agreement with current classifications.

کلیدواژه‌ها English

Lady's mantles
hypanthium
calyx
stamen
ovary
principal component analysis
cluster analysis
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دوره 4، شماره 2 - شماره پیاپی 12
تابستان 1396
صفحه 116-127

  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405