Australian Journal of Crop Science, vol.6, no.3, pp.559-566, 2012 (Scopus)
The pollen morphology of 21 taxa of the genus Lathyrus, representing 9 sections Orobus, Lathyrostylis (=Platystylis), Lathyrus (syn. Cicercula), Orobon, Pratensis, Aphaca, Viciopsis, Linearicarpus and Nissolia from Central Anatolia, Turkey was investigated using light microscopy (LM) and scanning electron microscopy (SEM). The pollen grains of the studied taxa are 3-zonocolporate, spheroidal to prolate and medium to large (P = 28.67-54.32 μm, E = 20.17-52.58 μm). Their outline in the equatorial view is quadratic-obtuseemarginate in L. tukhtensis, L. cilicicus and L. inconspicuus var. inconspicuus or elliptical to rectangular-obtuse-convex in the other taxa, and in the polar view it is circular, triangular or quinquangular-obtuse-convex. The surface ornamentation of the mesocolpium varies from obscurely reticulate-perforate in L. incurvus, L. brachypterus, L. armeus and L. hirsutus; perforate in L. tukhtensis and L. cilicicus; reticulate-granulate in L. cicera; perforate-granulate in L. inconspicuus var. inconspicuus to finely reticulate-perforate in the rest of the taxa. The apocolpium and colpus area are psilate or perforate in all taxa except L. chloranthus, which exhibits the finely reticulate-perforate pattern. The findings of the study reveal that pollen morphological characters such as the surface sculpturing type, pollen size, shape and outline in equatorial view are mostly useful in distinguishing the studied taxa, but they do not provide strong evidence for the infrageneric delimitation of the genus.