Use of Pollen Morphology Traits for Identifying Species of Centaurea L. Asteraceae in Kurdistan-Iraq

  • Rizgar Y. Ismail Dept. of Biology, Faculty of Science, University of Zakho, Zakho, Kurdistan Region, Iraq
  • Saleem E. Shahbaz Dept. of Agricultural Engineering, Faculty Science, University of Duhok, Kurdistan Region, Iraq
Keywords: Centaurea L, Microspinules, Suboblate, Prolate, Centaurea regia

Abstract

The polleniferous material of Centaurea taxa grow in Kurdistan-Iraq was collected. Samples were tested using scanning electron microscopy (SEM) and light microscopy (LM). In the polar view, pollen grain outlines are mostly triangular or triangular-circular. In equatorial view, the elliptic shape is common, while circulars or semicircular shapes are rare. The exine sculpture is scabrate, and the tectum is perforate. Number of sculpture microspinules/ µm², and their heights together with the number of wall perforations provide significant characters for taxa delimitation. Pollen grains of all species are of medium size, very few of some species pollen are larger or smaller in size. Species producing subprolate pollen shape is common, while oblate spheroidal and Prolate spheroidal shapes are less common. The principal component analysis and the discriminant analysis can recognize 65.478% and 87.54% of the total variability respectively; moreover, the discriminant function can correctly classify 125 or 78.125% out of 160 observations for pollen traits. 

Author Biographies

Rizgar Y. Ismail, Dept. of Biology, Faculty of Science, University of Zakho, Zakho, Kurdistan Region, Iraq

Dept. of Biology, Faculty of Science, University of Zakho, Zakho, Kurdistan Region, Iraq - (rizgar.ismail@uoz.edu.krd)

Saleem E. Shahbaz, Dept. of Agricultural Engineering, Faculty Science, University of Duhok, Kurdistan Region, Iraq

Dept. of Agricultural Engineering, Faculty Science, University of Duhok, Kurdistan Region, Iraq (saleem.shahbaz@uod.ac)

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Published
2020-12-30
How to Cite
Ismail, R., & Shahbaz, S. (2020). Use of Pollen Morphology Traits for Identifying Species of Centaurea L. Asteraceae in Kurdistan-Iraq. Science Journal of University of Zakho, 8(4), 131-138. https://doi.org/10.25271/sjuoz.2020.8.4.754
Section
Science Journal of University of Zakho