Pollen morphology of Scorzonera (Asteraceae) in Turkey

PINAR N. M., ÇOŞKUNÇELEBİ K., Simsek D., OKUR S., MAKBUL S., Acar A.

PHYTOTAXA, cilt.252, sa.4, ss.233-262, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 252 Sayı: 4
  • Basım Tarihi: 2016
  • Doi Numarası: 10.11646/phytotaxa.252.4.1
  • Dergi Adı: PHYTOTAXA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.233-262
  • Anahtar Kelimeler: Asteraceae, Pollen, Scorzonera, Turkey, L. ASTERACEAE, COMPOSITAE-ASTERACEAE, NORTHEAST ANATOLIA, NOV ASTERACEAE, TAXA, CICHORIEAE, S.L., SYSTEMATICS, LACTUCEAE, POSITION
  • Ankara Üniversitesi Adresli: Evet

Özet

The pollen morphology of 45 taxa belonging to 15 sections of the genus Scorzonera distributed in Turkey were studied with light and electron microscopies. The pollen is generally 3-zonocolporate. Pollen grains are oblate-spheroidal with the polar axes 23.2-59.2 mu m and the equatorial axes 27-62.5 mu m. The outline is more or less circular to slightly elliptic in equatorial view and triangular or obtuse-hexagonal in polar view; amb semiangular to intersemiangular. Sculpturing is echinolophate. The spines are commonly concave-conical with a broad basis, sides are straight or slightly convex with a subacute tapered apical portion. Numerical analysis showed that polar axes, equatorial axes and exine thickness are valuable variables for seperating the examined taxa.