Phylogenetic and systematic studies in Rutaceae: cladistic analysis and position o...
Integrative systematic studies in Neotropical families, with emphasis on Rutaceae,...
Grant number: | 06/03170-0 |
Support Opportunities: | Research Grants - Young Investigators Grants |
Start date: | June 01, 2007 |
End date: | May 31, 2011 |
Field of knowledge: | Biological Sciences - Botany - Plant Taxonomy |
Principal Investigator: | Milton Groppo Júnior |
Grantee: | Milton Groppo Júnior |
Host Institution: | Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil |
Associated scholarship(s): | 07/06336-0 - Phylogenetic and systematic studies in Rutaceae: cladistic analysis and position of Almeidea A.St.-Hil. within Galipeinae (Galipeae, Rutoideae) inferred from morphological and molecular data., BP.MS |
Abstract
Subtribe Galipeinae (tribe Galipeae) is the largest taxonomic group of the family Rutaceae, with ca. 26 exclusively neotropical genera and 160 species. Of these, ca. 120 species (22 genera) occur in Brazil, 45 (43 Brazilians) belonging to Conchocarpus. With such a diversity, there are problems in the generic delimitation of some groups, the genera defined for limited joint of character states, and not for exclusive states of character (synapomorphies). Some genera are monotypical or with less than five species. Moreover, recent molecular studies have demonstrated that the subtribe is not monophyletic, and in need to be re-circumscribed. One of the objectives of this project is to evaluate the phylogeny of Galipeineae, using the cladictic methodology in a molecular context, attempting to make clearer the relations between the genera and presenting a new proposal of circumscription for some groups, specially Conchocarpus, besides testing the proper circumscription of the subtribe. Morphologic characteristics as degree of conation of the petals, of the carpels and zygomorphy of the corolla will be optimized in the resultant molecular trees, the attempt to relate the floral and fruit characteristics with possible pollinators and dispersals. Some genera that also had emerged as next the Galipeinae in recent studies (as Hortia), will be enclosed in the analyses, a group informally called 'expanded Galipeinae'. (AU)
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