Pollen morphology of some taxa of Vicia L. subgenus Vicia (Fabaceae) from Turkey

2013-11-01
KAHRAMAN, AHMET
Binzat, Okan Kaan
Doğan, Musa
In this study, the pollen morphology of 11 taxa belonging to Atossa (Alef.) Asch. & Graebner, Hypechusa (Alef.) Asch. & Graebner, Peregrinae Kupicha, Wiggersia (Alef.) Maxted, Vicia L. and Narbonensis (Radzhi) Maxted sections of the genus Vicia L. subgenus Vicia (Fabeae, Fabaceae) naturally growing in Turkey has been studied using Light Microscopy (LM) and Scanning Electron Microscopy (SEM) to evaluate the taxonomic relevance of pollen characters. Twelve morphometric characters are analysed with one-way analysis of variance and Tukey's honestly significant difference test for multiple comparisons. Of the taxa studied V. narbonensis var. narbonensis (sect. Narbonensis) has the largest pollen grains (P = 51.98 mu m x E = 30.52 mu m) and V. lathyroides (sect. Wiggersia) has the smallest pollen grains (P = 27.71 mu m x E = 20.14 mu m). The pollen grains are subprolate to perprolate (P/E = 1.16-2.11), but the prolate shape occurs in the majority of the taxa. The regular pollen grains of all taxa are trizonocolporate, isopolar, and released in monads. Ornamentation of the mesocolpium is psilate-perforate in V. lathyroides (sect. Wiggersia), reticulate-rugulate in V. narbonensis var. narbonensis (sect. Narbonensis), (micro)reticulate in V. sericocarpa var. sericocarpa (sect. Hypechusa), V. sativa subsp. sativa (sect. Vicia) and V. grandiflora var. grandiflora (sect. Vicia), and reticulate-perforate in the remaining taxa. The apocolpium and colpus area are psilate or perforate in all taxa except V. sericocarpa var. sericocarpa (sect. Hypechusa) and V. sativa subsp. sativa (sect. Vicia), which exhibit the obscurely reticulate-perforate pattern. Several palynological features have taxonomic importance in sectional level: polar axis, equatorial diameter, pollen shape (P/E ratio), colpus length, colpus width, size of pori, porus length/width ratio, lumina diameter, muri thickness and ornamentation. The results also indicate that pollen characters can be useful in distinguishing the examined taxa.
PLANT SYSTEMATICS AND EVOLUTION

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Citation Formats
A. KAHRAMAN, O. K. Binzat, and M. Doğan, “Pollen morphology of some taxa of Vicia L. subgenus Vicia (Fabaceae) from Turkey,” PLANT SYSTEMATICS AND EVOLUTION, pp. 1749–1760, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35553.