DIVERSITY OF EXINE’S ORNAMENTAL CHARACTER STUDIES IN FERN AND FLOWERING PLANT

Abstract

<p>Pollen or pollen wall consists of two layers, namely exine and intine. Exine (outer layer) composed of sporopolenin, and intine (inner layer) composed of cellulose. Pollen wall structure, especially the Exine, is one of the characters used for identification. The shape and type of pollen or spores of each specific plant species. Exine’s ornamentation have variations in form and structure. That like are thorns, scratches, basins and other types of ornamentation. Pollen and spore sampling is done randomly in some plants that are supposed to represent members berspora ferns (Asplenium nidus, Platycerium bifurcatum, and Microsorum diversifolium) and pollen of flowering plants (Ipomea sp., Tridax procumben. And flowers Crinum asiaticum). Spores of Asplenium nidus to have a corrugate apertura monocalpalae with ornaments. Platycerium bifurcatum spores aperture shape gemenete dicolpale with ornaments, while the spores Microsorum diversifolium has the form apertura psilatum dicolpalae with ornaments. Polen has Tridax procumben apertura echinatus peripole with ornaments, Ipomea sp. has the form apertura saculate peripole with ornaments, while the Crinum asiaticum has the form apertura clevate peripole with ornaments. The diversity of spore of plant species in nature have affect the diversity of forms of ornamentation owned. </p><p><strong>Keywords</strong>: Diversity, exine, ornament’s type, spores and pollen.</p>