Floral structure and development of Cranichideae and Orchideae (Orchideoideae: Orchidaceae) representatives

• Grant number: 11/21150-5
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: June 01, 2012
• End date: June 30, 2015
• Field of knowledge: Biological Sciences - Botany - Plant Morphology
• Principal Investigator: Maria das Graças Sajo
• Grantee: Sérgio Akira Adachi
• Host Institution: Instituto de Biociências (IBB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

Orchidaceae, one of the largest families of angiosperms, has cosmopolitan distribution and is well represented in Brazil, appearing in all types of vegetational formation. It is a group easily recognizable by the presence of modified flowers where a strong zygomorphy is associated with the partial fusion of the androecium/gynoecium leading to the formation of particular structures in these whorls. The tribes Cranichideae and Orchideae belong to the subfamily Orchidoideae Endl., comprise about 150 genera and 3000 species, mostly terrestrial. The species belonging to the two tribes have flowers, in general, tubular and presents particular modifications in the androecium/gynoecium, although lack morphological "key" characters thatallow their distinction. In an attempt to meet this demand, the objective of this project is to study the morphology, ontogeny, floral vascularization and aspects of the development of anthers and ovules of representatives belonging to this tribes, to determine the origin of their floral modifications and recognize possible homologies that assists in their taxonomic distinction. (AU)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

ADACHI, Sérgio Akira. Estrutura floral de representantes da tribo Cranichideae (Orchidoideae: Orchidaceae). 2015. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Biociências. Botucatu Botucatu.