Sem (Scanning Electron Microscopy)Studies on Seeds of Two Species of Dianthus (Caryophyllaceae)

Seed morphology of two species of Dianthus (D. barbatus and D. latifolius) has been studied using the light microscopy and scanning electron microscopy (SEM). Both the species differ in colour, size, shape, seed coat, number of suture point, suture outline, position of hilum, and tubercule shape etc. In two species of Dianthus seed coat are two layered with medium or fine granulation. concavo-convex surface, smooth margin and embryo is straight. Both species showed little variation in dorsal and ventral side of the seed coat. The suture outline of D. barbatus was serrate sinuous. It was found sharply digitate sinous in D. latifolius. The shape of the seed tubercule prominently obtuse in D. barbatus and finely obtuse in D. latifolius.