Recent Topics Posters
Nurit-Silva, Kiriaki , Costa-Silva, Rafael , Basílio, Ionaldo, J. D. , De Fátima Agra , Maria .
Leaf Epidermal Characters of Brazilian Species of Solanum sect. Torva as Taxonomic Evidence.
Solanum L. is the largest and most complex genus of the family Solanaceae species, having about 1,700 species with wide distribution in tropical and subtropical regions of the world. The subgenus Leptostemonum (Dunal) Bitter comprises about 450 species, and can be recognized by a set of characters: presence of thorns, anthers attenuated to the apex and the hairs consist of a wide range of stellate trichomes. The main centers of diversity and distribution of the subgenus are South America, Africa and Australia and Brazil is considered the center of genetics diversity of various infrageneric groups. The morphological similarities among Solanum species are remarkable, and are often very difficult a clear distinction between them. This study presents a comparative anatomical study of the leaf epidermis of the Brazilian species of Solanum sect. Torva, it was carried out using light and scanning electron microscopy. The leaf epidermis surfaces of ten species of the section were investigated in order to evaluate their taxonomic significance to be used for separation and delimitation of the species of the section. As results, some micro-morphological characters of the leaf epidermis, such as density, distribution and type of stellate trichomes,and the anticlinal walls of epidermal cells, and also the type and distribution of stomata proved to be the most useful and distinctive characters for the separation of species, and also may contribute as an additional support to the distinction between species as well as to the systematic of Solanumsect. Torva.
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1 - Universidade Federal da Paraíba, Laboratório de Tecnologia Farmacêutica, Caixa Postal 5001, Cidade Universitária, João Pessoa, Paraíba, 58051-970, Brazil
Presentation Type: Recent Topics Poster
Location: Khorassan Ballroom/Chase Park Plaza
Date: Monday, July 11th, 2011
Time: 5:30 PM