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MORPHOLOGICAL DIVERSITY OF SARGASSUM SPECIES OF OMAN SEA COASTS | ||
| The Iranian Journal of Botany | ||
| دوره 27، شماره 1، شهریور 2021، صفحه 62-70 اصل مقاله (555.17 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22092/ijb.2021.353924.1317 | ||
| نویسنده | ||
| Fatemeh Sargazi* | ||
| Biology Department, Faculty of Biological Sciences, Sistan and Baluchestan University, Zahedan, Iran. | ||
| چکیده | ||
| Sargassum is one of the morphologically most complicated phaeophycean genera and represents the most species-rich genus of the brown algal order Fucales (Phaeophyceae). Sargassum is one of economically important brown algae in the Gulf of Oman. In this study, 23 characters were studied in 15 populations of 6 species of Sargassum. Unweight paired groups using average mean (UPGMA), ward clustering methods, principal components analysis (PCA) and principal coordinate analysis (PCoA) were performed to group the species based on morphological characters. Statistical analyses indicated that characters such as branches of receptacle, leaf apex and receptacles are the most important diagnostic characters in intera-generic variation. In general, two major clusters were formed. The species were well separated in these clusters and the UPGMA tree was able to show the relationships among the species. The species relationships in these clusters were mostly in consistent of the current classifications of this genus. | ||
| کلیدواژه‌ها | ||
| Sargassum؛ brown algae؛ characters؛ variation؛ receptacles؛ leaf apex؛ UPGMA | ||
| عنوان مقاله [English] | ||
| تنوع ریخت‌شناسی گونه‌های جنس Sargassum در سواحل دریای عمان | ||
| نویسندگان [English] | ||
| فاطمه سرگزی | ||
| عضو هیأت علمی گروه زیست‌شناسی، دانشکده علوم زیستی، دانشگاه سیستان و بلوچستان، زاهدان، ایران | ||
| چکیده [English] | ||
| سارگاسوم یکی از پیچیده‌‌ترین جنس‌های جلبک‌های قهوه‌ای است و یکی از بزرگترین جنس‌ها در جلبک‌های قهوه‌ای راسته Fucales، ((Phaeophyceae را تشکیل می‌دهد. سارگاسوم یکی از جلبک‌های قهوه‌ای اقتصادی مهم در خلیج عمان است. در این مطالعه، 23 صفت در 15 جمعیت از 6 گونه سارگاسوم مورد بررسی قرار گرفت. روش جفت گروه بدون وزن با میانگین متوسط (UPGMA)، روش‌های خوشه‌بندی (Ward)، تجزیه و تحلیل به مولفه‌های اصلی (PCA) و تجزیه و تحلیل به مختصات اصلی (PCoA) برای گروه‌بندی نمونه‌های گیاهان براساس خصوصیات مورفولوژیکی انجام شد. تجزیه و تحلیل آماری نشان داد که صفاتی مانند انشعابات رسپتاکل‌ها، نوک برگ و زوائد رسپتاکل از مهمترین صفات تشخیصی در تنوع درون جنسی هستند. به طور کلی دو خوشه اصلی تشکیل شده است. گونه‌ها در این خوشه‌ها به خوبی از هم جدا شده‌اند و درخت UPGMA توانست روابط بین گونه‌ها را به خوبی نشان دهد. روابط گونه‌ای در این خوشه‌ها تقریباً مطابق با طبقه‌بندی‌های جاری این جنس بود. | ||
| کلیدواژه‌ها [English] | ||
| Sargassum, brown algae, characters, variation, receptacles, leaf apex, UPGMA | ||
| مراجع | ||
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