Taxonomic significance of cypselas morphology in the tribe Coreopsideae (Asteraceae) from Pakistan and Kashmir

Document Type : Research Paper

Authors

Centre for Plant Conservation, University of Karachi, Karachi, Pakistan

10.22092/ijb.2022.128217

Abstract

The present studies dealt with the cypselas morphology of 11 species representing 4 genera of the tribe Coreopsideae (Asteraceae) from Pakistan and Kashmir. The following parameters of the cypselas viz., color, shape, surface, degree of pubescence, base, presence or absence of beak, awns, wings, and carpopodium have been examined by stereomicroscope and scanning electron microscope (SEM). The detailed cypselas morphological description of all the studied taxa along artificial keys of genera and species are given. SEM micrographs are provided to clearly show the diagnostic characters. The outcome results of cypselas morphological characters have been analyzed statistically by using SPSS 21, to search out the correlation between cypselas characters and gross morphological characters as well as to find the close affinities among the studied taxa of the tribe Coreopsideae from the study area. The present findings conclude that the cypsela characters can be used as diagnostic taxonomic characters for the delimitation of taxa.

Keywords

Article Title [Persian]

ارزش تاکزونومیکی صفات ریختی فندقه‌ها در قبیله Coreopsideae از خانواده Asteraceae از پاکستان و کشمیر

Authors [Persian]

  • ربیعه اخلاق
  • روحی عابد
  • انجم پروین
  • شوکت علی‌خان
دانشجوی دکتری، مرکز حفاظت گیاهان، دانشگاه کراچی، کراچی، پاکستان
Abstract [Persian]

مطالعات حاضر صفات ریختی فندقه در ۱۱ گونه از چهار جنس از قبیله Coreopsideae از خانواده Asteraceae را در پاکستان و کشمیر مورد بررسی قرار می­دهد. صفات ریختی مختلف از جمله رنگ، شکل، سطح، درجه بلوغ، قاعده، وجود یا عدم وجود منقار، ریشک‌ها، بال‌ها و کارپوپودیوم توسط استریومیکروسکوپ و میکروسکوپ الکترونی روبشی (SEM) مورد بررسی قرار گرفته‌اند. شرح دقیق مورفولوژیکی cypselas از همه گونه‌های مورد مطالعه همراه با کلیدهای شناسایی جنس‌ها و گونه‌ها ارائه شده است. عکس­های SEM برای نشان دادن واضح صفات تشخیصی ارائه شده است. نتایج حاصل از صفات مورفولوژیکی cypselas با استفاده از SPSS 21 برای جستجوی همبستگی بین خصوصیات فندقه­ها و خصوصیات ریخت‌شناسی ناخالص و همچنین برای یافتن قرابت‌های نزدیک در میان گونه‌های مورد مطالعه قبیله Coreopsideae از منطقه مورد مطالعه مورد تجزیه و تحلیل آماری قرار گرفته است. یافته‌های این مطالعه نشان می­دهد که صفات فندقه را می‌توان به عنوان صفات تشخیصی در طبقه‌بندی و برای تعیین حدود گونه‌ها استفاده کرد.

Keywords [Persian]

  • Coreopsideae
  • Asteraceae
  • Cypselas morphology
  • pappus
  • awns
  • Pakistan
  • Kashmir

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The Iranian Journal of Botany
Volume 28, Issue 2
December 2022
Pages 113-127

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History

  • Receive Date: 22 October 2022
  • Revise Date: 22 November 2022
  • Accept Date: 11 December 2022

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