Palynological Study of Species of Astragalus L. sect. Hymenostegis Bunge and Hymenocoleus Bunge (Fabaceae) in Türkiye

Yıl 2025, Cilt: 25 Sayı: 3, 392 - 408, 25.12.2025

Seher Karaman , Oktay Bıyıklıoğlu , Şeyma Boyar , Talip Çeter

https://doi.org/10.17475/kastorman.1845409

Öz

Aim of study: Astragalus is one of the largest genus of the Fabaceae family. Morphological, molecular and genetic studies as well as palynological studies are being used to solve the taxonomic problems of this genus, which has a wide distribution worldwide.
Material and method: In this study, the pollen morphology of 14 species belonging to the Hymenostegis and Hymenocoleus sections distributed in Türkiye was examined by light and electron microscopy.
Main results: In all taxa examined, pollen grains were detected as monad, radially symmetrical and apolar type. While the aperture types were determined as tricolporate in all species examined, only 5% trisyncolpate and 95% tricolporate aperture types were found in A. gueruenensis and A. ciloensis.
Research highlights: Ornamentation types vary between the polar to equatorial region. Eight different ornamentation types have been identified, consisting of different combinations of psilate, perforate, microreticulate and reticulate ornamentation elements. Ornamentation in the equatorial and polar areas, P/E ratio and shape, Aperture type and pore structure are the most valuable variables to distinguish between Hymenostegis and Hymenocoleus section types.

Anahtar Kelimeler

Astragalus , Numerical Analysis , Pollen Grains , Türkiye

Destekleyen Kurum

This work was supported by the Scientifc and Technological Research Council of Türkiye (TÜBİTAK) under Grant [TBAG-110 T 911].

Türkiye'deki Astragalus L. Cinsi Hymenostegis Bunge ve Hymenocoleus Bunge Seksiyonlarina Ait Türlerin Palinolojik Yönden İncelenmesi

Öz

Çalışmanın amacı: Astragalus cinse, Fabaceae familyasının en büyük üyelerinden biridir. Dünya genelinde geniş bir yayılış olanı olan bu cinsin taksonomik problemlerinin çözülmesi için morfolojik, moleküler ve genetik çalışmaların yanı sıra Palinolojik çalışmalardan destek alınmaktadır.
Materyal ve yöntem: Bu çalışma ile Türkiye'de yayılış gösteren Hymenostegis ve Hymenocoleus seksiyonlarına ait 14 türün polen morfolojisi ışık ve elektron mikroskobu ile incelenmiştir.
Temel sonuçlar: Polen taneleri monad, radyal simetrik ve izopolardır. Tüm incelenen türlerde apertür trikolporat olarak belirlenirken, A. gueruenensis ve A. ciloensis'te sadece %5 oranında trisinkolpat ve %95 oranında trikolporat apertür tipleri bulundu.
Araştırma vurguları: Ornamentasyon tipleri kutup bölgesi ve ekvatoral bölge arasında değişmektedir. Psilat, perforat, mikroretikülat ve retikülat süsleme elemanlarının farklı kombinasyonlarından oluşan sekiz farklı süsleme tipi tanımlanmıştır. Ekvator alanı ve kutup alanındaki süsleme, P/E oranı ve şekli, Apertür tipi ve por yapısı Hymenostegis ve Hymenocoleus kesit türlerini ayırmak için en değerli değişkenlerdir.

Anahtar Kelimeler

Astragalus , Sayısal Analiz , Polen , Türkiye

Kaynakça

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